2021Article de journal ER5 Auteurs : Beaupere, Noe; Soupremanien, Ulrich; Zalewski, Laurent Influence of Water Addition on the Latent Heat Degradation of Sodium Acetate Trihydrate Dans: Applied Sciences, 11 (2), p. 484, 2021, (ACL). Résumé | Liens @article{beaupere_influence_2021,
title = {Influence of Water Addition on the Latent Heat Degradation of Sodium Acetate Trihydrate},
author = {Noe Beaupere and Ulrich Soupremanien and Laurent Zalewski},
url = {https://www.mdpi.com/2076-3417/11/2/484},
doi = {10.3390/app11020484},
year = {2021},
date = {2021-01-01},
urldate = {2021-01-13},
journal = {Applied Sciences},
volume = {11},
number = {2},
pages = {484},
abstract = {To promote the development of thermal energy storage (TES), the sodium acetate trihydrate (SAT) presents interesting thermal properties. However, this material may suffer from aging throughout thermal cycles. Various solutions were explored in the literature to limit this aging, mainly based on the use of additives such as water. In this study, two samples were prepared. The first one consisted of raw SAT material whereas 3 wt.% of supplementary water has been added to the second one. They were then poured into 350 cm3 bricks, which were placed in an experimental test bench. After 35 cycles between 20 and 70 °C, a drop of about 10% of the latent heat was observed for the first sample. This behavior was like the literature data. For the second sample, the decrease of latent heat was more rapid (about 30%). Contrary to our expectations, the water addition seems not beneficial for the improvement of thermal stability. Interestingly, we noticed that the drop of the latent heat was fully reversible after sample stirring. This degradation might not be related to a thermal destructive mechanism but rather to a global segregation phenomenon. This segregation may be due to the breaking of hydrogen bonding between anhydrous sodium acetate and water, resulting in the separation of the two species.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
To promote the development of thermal energy storage (TES), the sodium acetate trihydrate (SAT) presents interesting thermal properties. However, this material may suffer from aging throughout thermal cycles. Various solutions were explored in the literature to limit this aging, mainly based on the use of additives such as water. In this study, two samples were prepared. The first one consisted of raw SAT material whereas 3 wt.% of supplementary water has been added to the second one. They were then poured into 350 cm3 bricks, which were placed in an experimental test bench. After 35 cycles between 20 and 70 °C, a drop of about 10% of the latent heat was observed for the first sample. This behavior was like the literature data. For the second sample, the decrease of latent heat was more rapid (about 30%). Contrary to our expectations, the water addition seems not beneficial for the improvement of thermal stability. Interestingly, we noticed that the drop of the latent heat was fully reversible after sample stirring. This degradation might not be related to a thermal destructive mechanism but rather to a global segregation phenomenon. This segregation may be due to the breaking of hydrogen bonding between anhydrous sodium acetate and water, resulting in the separation of the two species. |
2021Article de journal ER5 Auteurs : Asli, Mounir; Sassine, Emilio; Brachelet, Franck; Antczak, Emmanuel Hygrothermal behavior of wood fiber insulation, numerical and experimental approach Dans: Heat and Mass Transfer, 2021, (ACL). Liens @article{Asli2021,
title = {Hygrothermal behavior of wood fiber insulation, numerical and experimental approach},
author = {Mounir Asli and Emilio Sassine and Franck Brachelet and Emmanuel Antczak},
doi = {https://doi.org/10.1007/s00231-020-03002-9},
year = {2021},
date = {2021-01-01},
journal = {Heat and Mass Transfer},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2021Article de journal ER5 Auteurs : Thonon, Maxime; Fraisse, Gilles; Zalewski, Laurent; Pailha, Mickael Analytical modelling of PCM supercooling including recalescence for complete and partial heating/cooling cycles Dans: Applied Thermal Engineering, 190 , p. 116751, 2021, ISSN: 1359-4311, (ACL). Résumé | Liens @article{thonon_analytical_2021,
title = {Analytical modelling of PCM supercooling including recalescence for complete and partial heating/cooling cycles},
author = {Maxime Thonon and Gilles Fraisse and Laurent Zalewski and Mickael Pailha},
url = {https://www.sciencedirect.com/science/article/pii/S1359431121002064},
doi = {10.1016/j.applthermaleng.2021.116751},
issn = {1359-4311},
year = {2021},
date = {2021-01-01},
urldate = {2021-03-14},
journal = {Applied Thermal Engineering},
volume = {190},
pages = {116751},
abstract = {Phase change material (PCM) experiencing supercooling and phase change hysteresis are widely reported in the literature. However, only few studies model analytically such PCM, and they mostly focus on either supercooling or phase change hysteresis, but rarely on both phenomena. Moreover, partial phase change cycles, with an incomplete melting or solidification, are rarely considered even if these processes occur frequently in latent heat thermal energy storage (LHTES) systems. The objective of this study is to model analytically the thermal behaviour of a PCM experiencing supercooling and phase change hysteresis, for complete and partial phase change cycles. The developed method, based on a heat source term, enables to model the recalescence process during the solidification. Currently rarely considered, the influence of the cooling rate on the supercooling degree and the recalescence process is evaluated with a phenomenological approach. For partial cycles, the different behavior between heating and cooling is modelled with the hysteresis model “curve scale” already validated in literature. The experimental validation is carried out on a PCM brick sample, monitoring both the heat flux and the PCM temperature, which enables to characterize a greater mass of PCM compared to direct scanning calorimeter (DSC) analysis. The selected PCM undergoing supercooling during solidification is PEG6000, a polymer suitable for domestic hot water (DHW) storage. Results show a good agreement between experimental and numerical results for complete heating and cooling cycles. The behavior laws used to model the solidification with the supercooling and recalescence processes are validated for the cooling rate range tested. The modelling is also satisfactory concerning the experiments on partial solidification for different temperature plateaus. However, the model fails to correctly represent the thermal behavior for a cooling process after a partial melting of the PCM. To conclude, the developed model enables to represent accurately the thermal behaviour of a PCM experiencing supercooling and phase change hysteresis for most of the phase change processes studied. Investigations on the thermal conditions influencing the crystalline structure and the effect on the phase change dynamic are suggested to improve supercooling modelling. The developed model needs to be validated for PCM having a higher supercooling degree, such as sugar alcohols or salt hydrates.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
Phase change material (PCM) experiencing supercooling and phase change hysteresis are widely reported in the literature. However, only few studies model analytically such PCM, and they mostly focus on either supercooling or phase change hysteresis, but rarely on both phenomena. Moreover, partial phase change cycles, with an incomplete melting or solidification, are rarely considered even if these processes occur frequently in latent heat thermal energy storage (LHTES) systems. The objective of this study is to model analytically the thermal behaviour of a PCM experiencing supercooling and phase change hysteresis, for complete and partial phase change cycles. The developed method, based on a heat source term, enables to model the recalescence process during the solidification. Currently rarely considered, the influence of the cooling rate on the supercooling degree and the recalescence process is evaluated with a phenomenological approach. For partial cycles, the different behavior between heating and cooling is modelled with the hysteresis model “curve scale” already validated in literature. The experimental validation is carried out on a PCM brick sample, monitoring both the heat flux and the PCM temperature, which enables to characterize a greater mass of PCM compared to direct scanning calorimeter (DSC) analysis. The selected PCM undergoing supercooling during solidification is PEG6000, a polymer suitable for domestic hot water (DHW) storage. Results show a good agreement between experimental and numerical results for complete heating and cooling cycles. The behavior laws used to model the solidification with the supercooling and recalescence processes are validated for the cooling rate range tested. The modelling is also satisfactory concerning the experiments on partial solidification for different temperature plateaus. However, the model fails to correctly represent the thermal behavior for a cooling process after a partial melting of the PCM. To conclude, the developed model enables to represent accurately the thermal behaviour of a PCM experiencing supercooling and phase change hysteresis for most of the phase change processes studied. Investigations on the thermal conditions influencing the crystalline structure and the effect on the phase change dynamic are suggested to improve supercooling modelling. The developed model needs to be validated for PCM having a higher supercooling degree, such as sugar alcohols or salt hydrates. |
2021Article de journal ER5 Auteurs : Asli, Mounir; Brachelet, Franck; Sassine, E; Antczak, Emmanuel Thermal and hygroscopic study of hemp concrete in real ambient conditions Dans: Journal of Building Engineering, p. 102612, 2021, (ACL). Liens @article{Asli2021b,
title = {Thermal and hygroscopic study of hemp concrete in real ambient conditions},
author = {Mounir Asli and Franck Brachelet and E Sassine and Emmanuel Antczak},
doi = {10.1016/j.jobe.2021.102612},
year = {2021},
date = {2021-04-01},
journal = {Journal of Building Engineering},
pages = {102612},
publisher = {Elsevier BV},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2021Article de journal ER5 Auteurs : Kenai, Mohamed-Amine; Libessart, Laurent; Lassue, Stéphane; Defer, Didier Impact of green walls occultation on energy balance: Development of a TRNSYS model on a brick masonry house Dans: Journal of Building Engineering, 44 , p. 102634, 2021. Liens @article{Kenai2021,
title = {Impact of green walls occultation on energy balance: Development of a TRNSYS model on a brick masonry house},
author = {Mohamed-Amine Kenai and Laurent Libessart and Stéphane Lassue and Didier Defer},
doi = {10.1016/j.jobe.2021.102634},
year = {2021},
date = {2021-12-01},
journal = {Journal of Building Engineering},
volume = {44},
pages = {102634},
publisher = {Elsevier BV},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2021Article de journal ER5 Auteurs : Sassine, Emilio; Kinab, Elias; Cherif, Yassine; Antczak, Emmanuel; Nasrallah, Michel Thermal performance of lightweight concrete applications in building envelopes in Lebanon Dans: Building Simulation, 14 (5), p. 1359–1375, 2021. Liens @article{Sassine2021,
title = {Thermal performance of lightweight concrete applications in building envelopes in Lebanon},
author = {Emilio Sassine and Elias Kinab and Yassine Cherif and Emmanuel Antczak and Michel Nasrallah},
doi = {10.1007/s12273-021-0762-2},
year = {2021},
date = {2021-03-01},
journal = {Building Simulation},
volume = {14},
number = {5},
pages = {1359--1375},
publisher = {Springer Science and Business Media LLC},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Article de journal ER5 Auteurs : Ferreira, M C S; Furieri, B; Santos, J M; Moctar, Ould A El; Harion, Jean-Luc; Valance, A; Dupont, P; Reis, N C An experimental and numerical study of the aeolian erosion of isolated and successive piles Dans: Environmental Fluid Mechanics, 20 (1), p. 123–144, 2020, ISBN: 1573-1510, (ACL). Résumé | Liens @article{Ferreira.etal2020,
title = {An experimental and numerical study of the aeolian erosion of isolated and successive piles},
author = {M C S Ferreira and B Furieri and J M Santos and Ould A El Moctar and Jean-Luc Harion and A Valance and P Dupont and N C Reis},
url = {https://doi.org/10.1007/s10652-019-09702-z},
doi = {10.1007/s10652-019-09702-z},
isbn = {1573-1510},
year = {2020},
date = {2020-01-01},
journal = {Environmental Fluid Mechanics},
volume = {20},
number = {1},
pages = {123--144},
abstract = {Open storage yards at industrial sites usually comprise several piles of granular materials, representing a particulate matter source that may significantly deteriorate air quality. The aeolian erosion of stockpiles is affected by changes in airflow patterns due to the pile shape and the presence of nearby piles or buildings. The aim of this study was to analyse the impact of wind erosion of successive parallel stockpiles on flow behaviour and particle emissions. A wind tunnel experiment was conducted in six configurations: one isolated pile and two successive piles separated by gaps of 0.9h and 1.8h (h is the pile height) oriented to 60$,^circ$and 90$,^circ$with respect to the main wind flow direction. The particles in the piles had a bimodal particle size distribution consisting of sand that was erodible (white) and non-erodible (black) in the investigated velocity range. The contrasting colours enabled the visualisation of the non-erodible sand accumulation. The mean field of the wall shear stress distribution and flow pathlines predicted by numerical simulation were associated with the experimental erosion patterns. The emitted mass was experimentally quantified as the difference between the initial and final stockpile weights. Downstream pile had a large impact on the aeolian erosion as it was highly eroded as a result of the impact of the particles emitted from the upstream pile. The emissions of the two consecutive stockpiles were greater than twice the emissions from an isolated stockpile for both orientations. Additionally, emissions were lower for configurations in which the piles were perpendicular.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
Open storage yards at industrial sites usually comprise several piles of granular materials, representing a particulate matter source that may significantly deteriorate air quality. The aeolian erosion of stockpiles is affected by changes in airflow patterns due to the pile shape and the presence of nearby piles or buildings. The aim of this study was to analyse the impact of wind erosion of successive parallel stockpiles on flow behaviour and particle emissions. A wind tunnel experiment was conducted in six configurations: one isolated pile and two successive piles separated by gaps of 0.9h and 1.8h (h is the pile height) oriented to 60$,^circ$and 90$,^circ$with respect to the main wind flow direction. The particles in the piles had a bimodal particle size distribution consisting of sand that was erodible (white) and non-erodible (black) in the investigated velocity range. The contrasting colours enabled the visualisation of the non-erodible sand accumulation. The mean field of the wall shear stress distribution and flow pathlines predicted by numerical simulation were associated with the experimental erosion patterns. The emitted mass was experimentally quantified as the difference between the initial and final stockpile weights. Downstream pile had a large impact on the aeolian erosion as it was highly eroded as a result of the impact of the particles emitted from the upstream pile. The emissions of the two consecutive stockpiles were greater than twice the emissions from an isolated stockpile for both orientations. Additionally, emissions were lower for configurations in which the piles were perpendicular. |
2020Article de journal ER5 Auteurs : Leang, Enghok; Tittelein, Pierre; Zalewski, Laurent; Lassue, Stéphane Numerical and Experimental Investigations of Composite Solar Walls Integrating Sensible or Latent Heat Thermal Storage Dans: Applied Sciences, 10 (5), p. 1854, 2020, (ACL). Résumé | Liens @article{leang_numerical_2020,
title = {Numerical and Experimental Investigations of Composite Solar Walls Integrating Sensible or Latent Heat Thermal Storage},
author = {Enghok Leang and Pierre Tittelein and Laurent Zalewski and Stéphane Lassue},
url = {https://www.mdpi.com/2076-3417/10/5/1854},
doi = {10.3390/app10051854},
year = {2020},
date = {2020-01-01},
urldate = {2020-03-17},
journal = {Applied Sciences},
volume = {10},
number = {5},
pages = {1854},
abstract = {This article studies a composite solar wall with latent storage (TES) designed to heat rooms inside buildings during the cold season. No numerical model of the composite solar wall is currently available in the Dymola/Modelica software library. The first objective of this work is to develop one such model. The article describes the elementary components, along with the equations that allow modeling the heat transfers and storage phenomena governing both the thermal behavior and performance of the solar wall. This model was built by assembling various existing basic elements from the software’s “Building” library (e.g., models of heat transfer by convection, radiation and conduction) and then creating new elements, such as the storage element incorporating the phase change material (PCM). To validate this solar wall model, numerical results are compared to experimental data stemming from a small-scale composite solar wall manufactured in our laboratory, and the experimental set-up could be tested under real weather conditions. After verifying the level of confidence in the model, the energy performance of two solar walls, one with a conventional storage wall (sensible heat storage) the other containing a PCM (the same as in the experiment), are compared. The result indicates that the solar wall incorporating a PCM does not in this case release any more energy in the room to be heated.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
This article studies a composite solar wall with latent storage (TES) designed to heat rooms inside buildings during the cold season. No numerical model of the composite solar wall is currently available in the Dymola/Modelica software library. The first objective of this work is to develop one such model. The article describes the elementary components, along with the equations that allow modeling the heat transfers and storage phenomena governing both the thermal behavior and performance of the solar wall. This model was built by assembling various existing basic elements from the software’s “Building” library (e.g., models of heat transfer by convection, radiation and conduction) and then creating new elements, such as the storage element incorporating the phase change material (PCM). To validate this solar wall model, numerical results are compared to experimental data stemming from a small-scale composite solar wall manufactured in our laboratory, and the experimental set-up could be tested under real weather conditions. After verifying the level of confidence in the model, the energy performance of two solar walls, one with a conventional storage wall (sensible heat storage) the other containing a PCM (the same as in the experiment), are compared. The result indicates that the solar wall incorporating a PCM does not in this case release any more energy in the room to be heated. |
2020Article de journal ER5 Auteurs : Kenai, Mohamed-Amine; Libessart, Laurent; Lassue, Stephane; Defer, Didier Impact of plants obscuration on energy balance : Theoretical and numerical study Dans: Journal of Building Engineering, 29 , p. 101112, 2020, ISSN: 2352-7102. Résumé | Liens @article{KENAI2020101112,
title = {Impact of plants obscuration on energy balance : Theoretical and numerical study},
author = {Mohamed-Amine Kenai and Laurent Libessart and Stephane Lassue and Didier Defer},
url = {http://www.sciencedirect.com/science/article/pii/S2352710219318248},
doi = {https://doi.org/10.1016/j.jobe.2019.101112},
issn = {2352-7102},
year = {2020},
date = {2020-01-01},
journal = {Journal of Building Engineering},
volume = {29},
pages = {101112},
abstract = {This article presents the numerical simulation of the energy effect of a solar mask created by a green wall on the thermal performance of a building envelope in a temperate climate in order to integrate it into thermal calculation codes. The document describes primarily the adaptation of a simplified prediction model. The simplified model was developed and validated on the basis of tests carried out with an experimental controlled occultation device by integrating all external parameters influencing heat exchanges (conduction, convection and radiation). A first validation of the numeric resolution algorithm of the preliminary model was realised. Then the model was supplemented by considerations related to the characteristics of the selected plants: ivy and Virginia creeper, such as the semi-transparent appearance of foliage plants and their geometric distribution. The numerical prediction was very close to the experimental values, and the mean error was about 1 °C. This difference makes it possible to validate the developed model.},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
This article presents the numerical simulation of the energy effect of a solar mask created by a green wall on the thermal performance of a building envelope in a temperate climate in order to integrate it into thermal calculation codes. The document describes primarily the adaptation of a simplified prediction model. The simplified model was developed and validated on the basis of tests carried out with an experimental controlled occultation device by integrating all external parameters influencing heat exchanges (conduction, convection and radiation). A first validation of the numeric resolution algorithm of the preliminary model was realised. Then the model was supplemented by considerations related to the characteristics of the selected plants: ivy and Virginia creeper, such as the semi-transparent appearance of foliage plants and their geometric distribution. The numerical prediction was very close to the experimental values, and the mean error was about 1 °C. This difference makes it possible to validate the developed model. |
2020Inproceedings ER5 Auteurs : Colli, Carolina; Bataille, Alain; Antczak, Emmanuel Investigating Eco-efficiency Procedure to Compare Insulating Alternatives of Single-Family House Refurbishment Dans: 2020. @inproceedings{Colli2020,
title = {Investigating Eco-efficiency Procedure to Compare Insulating Alternatives of Single-Family House Refurbishment},
author = {Carolina Colli and Alain Bataille and Emmanuel Antczak},
year = {2020},
date = {2020-01-01},
journal = {Procedia CIRP},
keywords = {ER5},
pubstate = {published},
tppubtype = {inproceedings}
}
|
2020Article de journal ER5 Auteurs : Sassine, Emilio; Cherif, Yassine; Dgheim, Joseph; Antczak, Emmanuel Experimental and Numerical Thermal Assessmentof Lebanese Traditional Hollow Blocks Dans: International Journal of Thermophysics, 2020. Liens @article{Sassine2020,
title = {Experimental and Numerical Thermal Assessmentof Lebanese Traditional Hollow Blocks},
author = {Emilio Sassine and Yassine Cherif and Joseph Dgheim and Emmanuel Antczak},
doi = {https://doi.org/10.1007/s10765-020-02626-7},
year = {2020},
date = {2020-01-01},
journal = {International Journal of Thermophysics},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Article de journal ER5 Auteurs : Sassine, Emilio; Cherif, Yassine; Dgheim, Joseph; Antczak, Emmanuel Experimental and numerical thermal assessment of EPS concrete hollow blocks in Lebanon Dans: Journal of Materials in Civil Engineering, 2020. @article{Sassineb,
title = {Experimental and numerical thermal assessment of EPS concrete hollow blocks in Lebanon},
author = {Emilio Sassine and Yassine Cherif and Joseph Dgheim and Emmanuel Antczak},
year = {2020},
date = {2020-01-01},
journal = {Journal of Materials in Civil Engineering},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Article de journal ER5 Auteurs : Cherif, Yassine; Sassine, E; Lassue, Stéphane; Zalewski, Laurent Experimental and numerical natural convection in an asymmetrically heated double vertical facade Dans: International Journal of Thermal Sciences, 152 , 2020, (cited By 0). Liens @article{Cherif2020,
title = {Experimental and numerical natural convection in an asymmetrically heated double vertical facade},
author = {Yassine Cherif and E Sassine and Stéphane Lassue and Laurent Zalewski},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079690524&doi=10.1016%2fj.ijthermalsci.2020.106288&partnerID=40&md5=116e0588d4c4a765029b026e0cf366c8},
doi = {10.1016/j.ijthermalsci.2020.106288},
year = {2020},
date = {2020-01-01},
journal = {International Journal of Thermal Sciences},
volume = {152},
note = {cited By 0},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Article de journal ER5 Auteurs : Mabrouk, R; Dhahri, H; Naji, Hassane; Hammouda, S; Younsi, Zohir Lattice Boltzmann simulation of forced convection melting of a composite phase change material with heat dissipation through an open-ended channel Dans: International Journal of Heat and Mass Transfer, 153 , 2020, (cited By 0). Liens @article{Mabrouk2020,
title = {Lattice Boltzmann simulation of forced convection melting of a composite phase change material with heat dissipation through an open-ended channel},
author = {R Mabrouk and H Dhahri and Hassane Naji and S Hammouda and Zohir Younsi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85081691179&doi=10.1016%2fj.ijheatmasstransfer.2020.119606&partnerID=40&md5=ba26b3df76dcfaf742b80824a7819af9},
doi = {10.1016/j.ijheatmasstransfer.2020.119606},
year = {2020},
date = {2020-01-01},
journal = {International Journal of Heat and Mass Transfer},
volume = {153},
note = {cited By 0},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Article de journal ER5 Auteurs : Bennia, A; Fellouah, H; Khelil, A; Loukarfi, L; Naji, Hassane Experiments and large-eddy simulations of lobed and swirling turbulent thermal jets for hvac's applications Dans: Journal of Applied Fluid Mechanics, 13 (1), p. 103-117, 2020, (cited By 0). Liens @article{Bennia2020103,
title = {Experiments and large-eddy simulations of lobed and swirling turbulent thermal jets for hvac's applications},
author = {A Bennia and H Fellouah and A Khelil and L Loukarfi and Hassane Naji},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079182534&doi=10.29252%2fjafm.13.01.29970&partnerID=40&md5=473dcae33c1effd3f4f3a894fdfab7ea},
doi = {10.29252/jafm.13.01.29970},
year = {2020},
date = {2020-01-01},
journal = {Journal of Applied Fluid Mechanics},
volume = {13},
number = {1},
pages = {103-117},
note = {cited By 0},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Article de journal ER5 Auteurs : Beaupere, Noé; Soupremanien, Ulrich; Zalewski, Laurent Experimental measurements of the residual solidification duration of a supercooled sodium acetate trihydrate Dans: International Journal of Thermal Sciences, 158 , p. 106544, 2020, ISSN: 1290-0729, (ACL). Résumé | Liens @article{beaupere_experimental_2020,
title = {Experimental measurements of the residual solidification duration of a supercooled sodium acetate trihydrate},
author = {Noé Beaupere and Ulrich Soupremanien and Laurent Zalewski},
url = {http://www.sciencedirect.com/science/article/pii/S1290072920309972},
doi = {https://doi.org/10.1016/j.ijthermalsci.2020.106544},
issn = {1290-0729},
year = {2020},
date = {2020-01-01},
journal = {International Journal of Thermal Sciences},
volume = {158},
pages = {106544},
abstract = {Phase change materials, such as sodium acetate trihydrate, are efficient materials for Latent Heat Thermal Energy Storage (LHTES) according to their interesting thermal properties (high latent heat and specific heat). Their main drawback is a large degree of supercooling, up to 90 K for sodium acetate trihydrate, where the material may remain liquid below its melting point. However, heat could be released if the solidification could be triggered. For a better understanding of how heat is discharged after an initial cooling by external water flow and a solidification induction by seeding, the temperature was experimentally recorded to measure the residual solidification plateau duration. This experiment was repeated for different nucleation temperatures and fit well with the theoretical predictions. An increase of 90% in the solidification duration was observed when the supercooling degree dropped from 35 to 8 K. Thanks to an original experimental bench, this temperature record has been compared with a fully new method allowing the measurements of the material's opacification throughout the solidification process. Finally, two different opacification behaviors were observed for supercooling degrees below and above 20 K.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
Phase change materials, such as sodium acetate trihydrate, are efficient materials for Latent Heat Thermal Energy Storage (LHTES) according to their interesting thermal properties (high latent heat and specific heat). Their main drawback is a large degree of supercooling, up to 90 K for sodium acetate trihydrate, where the material may remain liquid below its melting point. However, heat could be released if the solidification could be triggered. For a better understanding of how heat is discharged after an initial cooling by external water flow and a solidification induction by seeding, the temperature was experimentally recorded to measure the residual solidification plateau duration. This experiment was repeated for different nucleation temperatures and fit well with the theoretical predictions. An increase of 90% in the solidification duration was observed when the supercooling degree dropped from 35 to 8 K. Thanks to an original experimental bench, this temperature record has been compared with a fully new method allowing the measurements of the material's opacification throughout the solidification process. Finally, two different opacification behaviors were observed for supercooling degrees below and above 20 K. |
2020Article de journal ER5 Auteurs : Thonon, Maxime; Fraisse, Gilles; Zalewski, Laurent; Pailha, Mickael Towards a better analytical modelling of the thermodynamic behaviour of phase change materials Dans: Journal of Energy Storage, 32 , p. 101826, 2020, ISSN: 2352-152X, (ACL). Résumé | Liens @article{THONON2020101826,
title = {Towards a better analytical modelling of the thermodynamic behaviour of phase change materials},
author = {Maxime Thonon and Gilles Fraisse and Laurent Zalewski and Mickael Pailha},
url = {http://www.sciencedirect.com/science/article/pii/S2352152X20316637},
doi = {https://doi.org/10.1016/j.est.2020.101826},
issn = {2352-152X},
year = {2020},
date = {2020-01-01},
journal = {Journal of Energy Storage},
volume = {32},
pages = {101826},
abstract = {Modelling of latent heat thermal storage systems is mainly achieved with an analytical formulation describing the thermodynamic state of the phase change material (PCM). In literature, different models exist to describe the evolution of the liquid fraction, the effective heat capacity and the enthalpy as a function of temperature. The main issue is to correctly establish these behaviour laws and to identify the thermophysical properties of each PCM. Analytical models proposed in literature often have obvious limitations, such as the presence of discontinuities or the impossibility to represent asymmetric phase change dynamics. Such approaches a priori do not allow to model accurately the thermodynamic behaviour of the PCM. Given the limitations identified on existing models, a new analytical model is proposed in this paper. Moreover, it is not uncommon to observe the presence of two heat flux peaks during the phase change process of a PCM, as with the studied PCM (RT58). Therefore, we propose a method to model the two heat flux peaks, which are rarely considered in literature. PCM properties are determined thanks to a four-step identification process, using experimental data and the different analytical models studied. Based on the numerical modelling of the rectangular container used for the experiments, and on the identified thermodynamic properties of the enclosed PCM, a comparative study between the new analytical model and existing models is carried out. It appears that modelling only a single heat flux peak is not satisfactory for the studied PCM, and taking into account a second heat flux peak decreases the error on the exchanged energy by a factor of 2.5 to 6.5 depending on models. The new model leads to an accuracy gain of a factor of 1.5 to 3.3 compared with existing models. We do not recommend the model based on a linear evolution of the liquid fraction as the resulting error is between 1.6 and 3.3 times greater than for the other models. The study carried out is based on both melting and solidification processes, and concerns a PCM which does not undergo supercooling.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
Modelling of latent heat thermal storage systems is mainly achieved with an analytical formulation describing the thermodynamic state of the phase change material (PCM). In literature, different models exist to describe the evolution of the liquid fraction, the effective heat capacity and the enthalpy as a function of temperature. The main issue is to correctly establish these behaviour laws and to identify the thermophysical properties of each PCM. Analytical models proposed in literature often have obvious limitations, such as the presence of discontinuities or the impossibility to represent asymmetric phase change dynamics. Such approaches a priori do not allow to model accurately the thermodynamic behaviour of the PCM. Given the limitations identified on existing models, a new analytical model is proposed in this paper. Moreover, it is not uncommon to observe the presence of two heat flux peaks during the phase change process of a PCM, as with the studied PCM (RT58). Therefore, we propose a method to model the two heat flux peaks, which are rarely considered in literature. PCM properties are determined thanks to a four-step identification process, using experimental data and the different analytical models studied. Based on the numerical modelling of the rectangular container used for the experiments, and on the identified thermodynamic properties of the enclosed PCM, a comparative study between the new analytical model and existing models is carried out. It appears that modelling only a single heat flux peak is not satisfactory for the studied PCM, and taking into account a second heat flux peak decreases the error on the exchanged energy by a factor of 2.5 to 6.5 depending on models. The new model leads to an accuracy gain of a factor of 1.5 to 3.3 compared with existing models. We do not recommend the model based on a linear evolution of the liquid fraction as the resulting error is between 1.6 and 3.3 times greater than for the other models. The study carried out is based on both melting and solidification processes, and concerns a PCM which does not undergo supercooling. |
2020Article de journal ER5 Auteurs : Leang, Enghok; Tittelein, Pierre; Zalewski, Laurent; Lassue, Stéphane Impact of a Composite Trombe Wall Incorporating Phase Change Materials on the Thermal Behavior of an Individual House with Low Energy Consumption Dans: Energies, 13 (18), 2020, ISSN: 1996-1073, (ACL). Résumé | Liens @article{en13184872,
title = {Impact of a Composite Trombe Wall Incorporating Phase Change Materials on the Thermal Behavior of an Individual House with Low Energy Consumption},
author = {Enghok Leang and Pierre Tittelein and Laurent Zalewski and Stéphane Lassue},
url = {https://www.mdpi.com/1996-1073/13/18/4872},
doi = {10.3390/en13184872},
issn = {1996-1073},
year = {2020},
date = {2020-01-01},
journal = {Energies},
volume = {13},
number = {18},
abstract = {As the heating demands of buildings drop considerably, the use of solar walls makes increasing sense. One of the obstacles to the development of such walls is their need for on-site implementation by specialized companies. On the other hand, a storage wall is generally composed of heavy materials with high inertia, which prevents prefabrication of the solar component. To avoid this problem and allow for solar walls to be prefabricated in the factory, a novel approach to replacing this heavy wall with a lighter storage wall incorporating phase change materials (PCM) has been proposed. This paper aims to demonstrate the impact of PCM on the thermal energy performance once they have been integrated into the storage wall of the composite Trombe wall. Addressed herein will be the heat transfer exchange inside a house located in the northern part of France, where a composite Trombe wall has been fitted without PCM. Three configurations will be investigated—(1) the model house without the solar Trombe wall, defined as the reference configuration; (2) the model house integrating the concrete solar Trombe wall; and (3) the model house integrating the PCM solar Trombe wall. Two setpoint temperatures will be introduced—(a) a constant setpoint of 20 °C, and (b) a variable setpoint of 19 °C (14 h from 7:00 a.m. to 9:00 p.m.) and 16 °C (10 h from 9:00 p.m. to 7:00 a.m.). Furthermore, three different climate conditions will be adopted to run simulations—Paris-Orly, Lyon, and Nice. Dymola/Modelica, a dynamic thermal simulation tool, will be utilized to simulate the thermal performance of these defined configurations. The results obtained, regarding a solar Trombe wall installation that applies two distinct storage walls exposed to the weather of Paris, showed similar minimizations of the one-year energy heating demand inside the bedroom, equal to roughly 20% (i.e., 20.45% of concrete storage wall and 19.90% of PCM storage wall) compared to the reference configuration (i.e., the house with no solar Trombe wall). Based on the imposed setpoint temperature by means of night and day reductions, the resulting heating energy demand in the bedroom, through application of the two storage walls (concrete and PCM) and three different climatic regions could be minimized by 20.34% in Paris, 20.20% in Lyon, and 68.10% in Nice (for the concrete storage wall) vs. the reference configuration; and by 18.79% in Paris, 19.56% in Lyon, and 55.15% in Nice (for the PCM storage wall) vs. the reference configuration.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
As the heating demands of buildings drop considerably, the use of solar walls makes increasing sense. One of the obstacles to the development of such walls is their need for on-site implementation by specialized companies. On the other hand, a storage wall is generally composed of heavy materials with high inertia, which prevents prefabrication of the solar component. To avoid this problem and allow for solar walls to be prefabricated in the factory, a novel approach to replacing this heavy wall with a lighter storage wall incorporating phase change materials (PCM) has been proposed. This paper aims to demonstrate the impact of PCM on the thermal energy performance once they have been integrated into the storage wall of the composite Trombe wall. Addressed herein will be the heat transfer exchange inside a house located in the northern part of France, where a composite Trombe wall has been fitted without PCM. Three configurations will be investigated—(1) the model house without the solar Trombe wall, defined as the reference configuration; (2) the model house integrating the concrete solar Trombe wall; and (3) the model house integrating the PCM solar Trombe wall. Two setpoint temperatures will be introduced—(a) a constant setpoint of 20 °C, and (b) a variable setpoint of 19 °C (14 h from 7:00 a.m. to 9:00 p.m.) and 16 °C (10 h from 9:00 p.m. to 7:00 a.m.). Furthermore, three different climate conditions will be adopted to run simulations—Paris-Orly, Lyon, and Nice. Dymola/Modelica, a dynamic thermal simulation tool, will be utilized to simulate the thermal performance of these defined configurations. The results obtained, regarding a solar Trombe wall installation that applies two distinct storage walls exposed to the weather of Paris, showed similar minimizations of the one-year energy heating demand inside the bedroom, equal to roughly 20% (i.e., 20.45% of concrete storage wall and 19.90% of PCM storage wall) compared to the reference configuration (i.e., the house with no solar Trombe wall). Based on the imposed setpoint temperature by means of night and day reductions, the resulting heating energy demand in the bedroom, through application of the two storage walls (concrete and PCM) and three different climatic regions could be minimized by 20.34% in Paris, 20.20% in Lyon, and 68.10% in Nice (for the concrete storage wall) vs. the reference configuration; and by 18.79% in Paris, 19.56% in Lyon, and 55.15% in Nice (for the PCM storage wall) vs. the reference configuration. |
2020Article de journal ER5 Auteurs : Shahrour, Isam; Bian, Hanbing; Xie, Xiongyao; Zhang, Zixin Use of Smart Technology to Improve Management of Utility Tunnels Dans: Applied Sciences, 10 (2), p. 711, 2020. Liens @article{Shahrour_2020,
title = {Use of Smart Technology to Improve Management of Utility Tunnels},
author = {Isam Shahrour and Hanbing Bian and Xiongyao Xie and Zixin Zhang},
doi = {10.3390/app10020711},
year = {2020},
date = {2020-01-01},
journal = {Applied Sciences},
volume = {10},
number = {2},
pages = {711},
publisher = {MDPI AG},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Article de journal ER5 Auteurs : Shahrour, Isam; Wengang, Zhang Use of soft computing techniques for tunneling optimization of tunnel boring machines Dans: Underground Space, 2020. Liens @article{Isam_2020,
title = {Use of soft computing techniques for tunneling optimization of tunnel boring machines},
author = {Isam Shahrour and Zhang Wengang},
doi = {10.1016/j.undsp.2019.12.001},
year = {2020},
date = {2020-01-01},
journal = {Underground Space},
publisher = {Elsevier BV},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Article de journal ER5 Auteurs : Jabari, Samah; Shahrour, Isam; Khattabi, Jamal El Assessment of the Urban Water Security in a Severe Water Stress Area-Application to Palestinian Cities Dans: Water, 12 (7), p. 2060, 2020, (ACL). Résumé | Liens @article{,
title = {Assessment of the Urban Water Security in a Severe Water Stress Area-Application to Palestinian Cities},
author = {Samah Jabari and Isam Shahrour and Jamal El Khattabi},
doi = {10.3390/w12072060},
year = {2020},
date = {2020-01-01},
journal = {Water},
volume = {12},
number = {7},
pages = {2060},
abstract = {This paper presents an assessment of the urban water security in a severe water stress area using a semi-quantitative risk-based approach. Water security indicators are selected according to the recommendations of international institutions, the literature review and the opinion of a panel of water experts. Selected indicators cover three fields: water resources, water services and water governance. The field of water resources is described by indicators related to the water resources availability, annual precipitation and the ratio of treated water, while the water services field is described by indicators related to the water service coverage, water losses and the continuity of water supply. Water governance includes three indicators: role and responsibility, access to water information and stakeholder engagement. Water security assessment is conducted in three stages: (i) data collection for five Palestinian cities in the West Bank of Jordan, (ii) determination of the risk score for each indicator using collected data and an expert's opinion, (iii) determination of the global water security score and water security index using the matrix risk assessment and the wise weight assessment ratio analysis (SWARA) methods. Results show that water risk is ranked as extreme for all cities. Risk related to water resources is a major contributor to global risk, followed by water governance.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
This paper presents an assessment of the urban water security in a severe water stress area using a semi-quantitative risk-based approach. Water security indicators are selected according to the recommendations of international institutions, the literature review and the opinion of a panel of water experts. Selected indicators cover three fields: water resources, water services and water governance. The field of water resources is described by indicators related to the water resources availability, annual precipitation and the ratio of treated water, while the water services field is described by indicators related to the water service coverage, water losses and the continuity of water supply. Water governance includes three indicators: role and responsibility, access to water information and stakeholder engagement. Water security assessment is conducted in three stages: (i) data collection for five Palestinian cities in the West Bank of Jordan, (ii) determination of the risk score for each indicator using collected data and an expert's opinion, (iii) determination of the global water security score and water security index using the matrix risk assessment and the wise weight assessment ratio analysis (SWARA) methods. Results show that water risk is ranked as extreme for all cities. Risk related to water resources is a major contributor to global risk, followed by water governance. |
2020Article de journal ER5 Auteurs : Leang, Enghok; Tittelein, Pierre; Zalewski, Laurent; Lassue, Stéphane Design Optimization of a Composite Solar Wall Integrating a PCM in a Individual House: Heating Demand and Thermal Comfort Considerations Dans: Energies, 13 (21), 2020, ISSN: 1996-1073, (ACL). Résumé | Liens @article{en13215640,
title = {Design Optimization of a Composite Solar Wall Integrating a PCM in a Individual House: Heating Demand and Thermal Comfort Considerations},
author = {Enghok Leang and Pierre Tittelein and Laurent Zalewski and Stéphane Lassue},
url = {https://www.mdpi.com/1996-1073/13/21/5640},
doi = {10.3390/en13215640},
issn = {1996-1073},
year = {2020},
date = {2020-01-01},
journal = {Energies},
volume = {13},
number = {21},
abstract = {Thermal energy storage (TES), which features an innovative technology, can enhance energy efficiency in the building sector and reduce CO2 emissions. Due to their high heat storage capacity, phase change materials (PCMs) have impressed many researchers. This paper investigates the energy performance of an individual house integrating a solar Trombe wall containing PCM with respect to heating demand and thermal comfort applications. The thermal energy performance of the design house was simulated using Dymola/Modelica, the thermal building simulation tool, whereby the optimization of objective functions as regards heating demand and thermal comfort was executed using GenOpt, the generic optimization software. Optimization of the solar Trombe wall focuses on the feasibility to find the optimal PCM parameters when running GenOpt, which consist of latent heat, melting temperature, PCM thickness and thermal conductivity, in order to minimize both the annual energy consumption for heating and the number of hours of thermal discomfort. The parametric study was first conducted for each PCM parameter so as to not only observe its effect on the identified energy performance, but also ensure the absence of errors in simulation runs before performing the optimization. The ‘Coordinate Search’ Generalized Pattern Search (GPS) algorithm was applied to minimize the objective function, whereas the ‘Weighted Sum Approach’ was used to solve the multi-objective function problem. Results showed that the higher the latent heat, the lower the heating demand and the greater the thermal comfort. The results of these parametric studies show that for the effect of the parameter on heating, demand is quite limited (1–2 kWh·m−2·year−1) whereas the effect on thermal comfort is more significant. The optimal PCM melting temperature is higher for warmer climates; it is also higher for the studied case applying the optimization method to minimize the objective function by assigning the number of hours of thermal discomfort (from 32.8 ∘C to 35.9 ∘C, depending on weather) than it is when applying the optimization method to reduce the objective function by assigning heating demand (from 31.5 ∘C to 32.9 ∘C, again depending on weather).},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
Thermal energy storage (TES), which features an innovative technology, can enhance energy efficiency in the building sector and reduce CO2 emissions. Due to their high heat storage capacity, phase change materials (PCMs) have impressed many researchers. This paper investigates the energy performance of an individual house integrating a solar Trombe wall containing PCM with respect to heating demand and thermal comfort applications. The thermal energy performance of the design house was simulated using Dymola/Modelica, the thermal building simulation tool, whereby the optimization of objective functions as regards heating demand and thermal comfort was executed using GenOpt, the generic optimization software. Optimization of the solar Trombe wall focuses on the feasibility to find the optimal PCM parameters when running GenOpt, which consist of latent heat, melting temperature, PCM thickness and thermal conductivity, in order to minimize both the annual energy consumption for heating and the number of hours of thermal discomfort. The parametric study was first conducted for each PCM parameter so as to not only observe its effect on the identified energy performance, but also ensure the absence of errors in simulation runs before performing the optimization. The ‘Coordinate Search’ Generalized Pattern Search (GPS) algorithm was applied to minimize the objective function, whereas the ‘Weighted Sum Approach’ was used to solve the multi-objective function problem. Results showed that the higher the latent heat, the lower the heating demand and the greater the thermal comfort. The results of these parametric studies show that for the effect of the parameter on heating, demand is quite limited (1–2 kWh·m−2·year−1) whereas the effect on thermal comfort is more significant. The optimal PCM melting temperature is higher for warmer climates; it is also higher for the studied case applying the optimization method to minimize the objective function by assigning the number of hours of thermal discomfort (from 32.8 ∘C to 35.9 ∘C, depending on weather) than it is when applying the optimization method to reduce the objective function by assigning heating demand (from 31.5 ∘C to 32.9 ∘C, again depending on weather). |
2020Article de journal ER5 Auteurs : Rathgeber, Christoph; Hiebler, Stefan; Bayón, Rocío; Cabeza, Luisa F; Zsembinszki, Gabriel; Englmair, Gerald; Dannemand, Mark; Diarce, Gonzalo; Fellmann, Oliver; Ravotti, Rebecca; Groulx, Dominic; Kheirabadi, Ali C; Gschwander, Stefan; Höhlein, Stephan; König-Haagen, Andreas; Beaupere, Noé; Zalewski, Laurent Experimental Devices to Investigate the Long-Term Stability of Phase Change Materials under Application Conditions Dans: Applied Sciences, 10 (22), 2020, ISSN: 2076-3417, (ACL). Résumé | Liens @article{app10227968,
title = {Experimental Devices to Investigate the Long-Term Stability of Phase Change Materials under Application Conditions},
author = {Christoph Rathgeber and Stefan Hiebler and Rocío Bayón and Luisa F Cabeza and Gabriel Zsembinszki and Gerald Englmair and Mark Dannemand and Gonzalo Diarce and Oliver Fellmann and Rebecca Ravotti and Dominic Groulx and Ali C Kheirabadi and Stefan Gschwander and Stephan Höhlein and Andreas König-Haagen and Noé Beaupere and Laurent Zalewski},
url = {https://www.mdpi.com/2076-3417/10/22/7968},
doi = {10.3390/app10227968},
issn = {2076-3417},
year = {2020},
date = {2020-01-01},
journal = {Applied Sciences},
volume = {10},
number = {22},
abstract = {An important prerequisite to select a reliable phase change material (PCM) for thermal energy storage applications is to test it under application conditions. In the case of solid–liquid PCM, a large amount of thermal energy can be stored and released in a small temperature range around the solid–liquid phase transition. Therefore, to test the long-term stability of solid–liquid PCM, they are subjected to melting and solidification processes taking into account the conditions of the intended application. In this work, 18 experimental devices to investigate the long-term stability of PCM are presented. The experiments can be divided into thermal cycling stability tests, tests on PCM with stable supercooling, and tests on the stability of phase change slurries (PCS). In addition to these experiments, appropriate methods to investigate a possible degradation of the PCM are introduced. Considering the diversity of the investigated devices and the wide range of experimental parameters, further work toward a standardization of PCM stability testing is recommended.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
An important prerequisite to select a reliable phase change material (PCM) for thermal energy storage applications is to test it under application conditions. In the case of solid–liquid PCM, a large amount of thermal energy can be stored and released in a small temperature range around the solid–liquid phase transition. Therefore, to test the long-term stability of solid–liquid PCM, they are subjected to melting and solidification processes taking into account the conditions of the intended application. In this work, 18 experimental devices to investigate the long-term stability of PCM are presented. The experiments can be divided into thermal cycling stability tests, tests on PCM with stable supercooling, and tests on the stability of phase change slurries (PCS). In addition to these experiments, appropriate methods to investigate a possible degradation of the PCM are introduced. Considering the diversity of the investigated devices and the wide range of experimental parameters, further work toward a standardization of PCM stability testing is recommended. |
2020Article de journal ER5 Auteurs : Sassine, Emilio; Cherif, Yassine; Antczak, Emmanuel; Dgheim, Joseph Méthodes expérimentales et numériques appliquées à la caractérisation thermophysique d un mur en briques anciennes en conditions instationnaires Dans: Entropie, 1 (Numéro 2</br>), 2020, ISSN: 2634-1476, (ACL). Liens @article{Sassine2020b,
title = {Méthodes expérimentales et numériques appliquées à la caractérisation thermophysique d un mur en briques anciennes en conditions instationnaires},
author = {Emilio Sassine and Yassine Cherif and Emmanuel Antczak and Joseph Dgheim},
url = {https://www.openscience.fr/Methodes-experimentales-et-numeriques-appliquees-a-la-caracterisation},
doi = {10.21494/ISTE.OP.2020.0517},
issn = {2634-1476},
year = {2020},
date = {2020-01-01},
journal = {Entropie},
volume = {1},
number = {Numéro 2</br>},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Article de journal ER5 Auteurs : Sassine, Emilio; Cherif, Yassine; Dgheim, Joseph; Antczak, Emmanuel Investigation of the mechanical and thermal performances of concrete hollow blocks Dans: SN Applied Sciences, 2020, (ACL). Liens @article{Sassine2020a,
title = {Investigation of the mechanical and thermal performances of concrete hollow blocks},
author = {Emilio Sassine and Yassine Cherif and Joseph Dgheim and Emmanuel Antczak},
doi = {https://doi.org/10.1007/S42452-020-03881-X},
year = {2020},
date = {2020-01-01},
journal = {SN Applied Sciences},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Article de journal ER5 Auteurs : Sassine, Emilio; Cherif, Yassine; Antczak, Emmanuel; Dgheim, Joseph Thermal characterization of building walls under random boundary conditions Dans: J. Thermal Sci. Eng. Appl., 2020, (ACL). Liens @article{Sassine2020d,
title = {Thermal characterization of building walls under random boundary conditions},
author = {Emilio Sassine and Yassine Cherif and Emmanuel Antczak and Joseph Dgheim},
doi = {https://doi.org/10.1115/1.4049432},
year = {2020},
date = {2020-01-01},
journal = {J. Thermal Sci. Eng. Appl.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Article de journal ER5 Auteurs : Abdellatif, Makram; Chamoin, Julien; NIANGA, Jean-Marie; Defer, Didier Prédiction par régression linéaire multiple : application au comportement thermique d’un bâtiment Dans: Academic Journal of Civil Engineering, Vol 38 No 1 , p. Special Issue-RUGC 2020 Marrakech, 2020, (ACTI). Liens @article{ABDELLATIF2020,
title = {Prédiction par régression linéaire multiple : application au comportement thermique d’un bâtiment},
author = {Makram Abdellatif and Julien Chamoin and Jean-Marie NIANGA and Didier Defer},
doi = {10.26168/AJCE.38.1.19},
year = {2020},
date = {2020-01-01},
journal = {Academic Journal of Civil Engineering},
volume = {Vol 38 No 1},
pages = {Special Issue-RUGC 2020 Marrakech},
publisher = {Academic Journal of Civil Engineering},
note = {ACTI},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2020Conférence ER5 Auteurs : Abdellatif, Makram; Chamoin, Julien; Defer, Didier; NIANGA, Jean Marie Prédiction par régression linéaire multiple : application au comportement thermique d'un b^atiment Rencontre Universitaire de Genie Civil, Marrakech, Morocco, 2020. Liens @conference{Abdellatif2020b,
title = {Prédiction par régression linéaire multiple : application au comportement thermique d'un b^atiment},
author = {Makram Abdellatif and Julien Chamoin and Didier Defer and Jean Marie NIANGA},
url = {https://hal.archives-ouvertes.fr/hal-03211526},
year = {2020},
date = {2020-01-01},
booktitle = {Rencontre Universitaire de Genie Civil},
address = {Marrakech, Morocco},
keywords = {ER5},
pubstate = {published},
tppubtype = {conference}
}
|
2019Article de journal ER5 Auteurs : Zalewski, Laurent; Franquet, Erwin; Gibout, Stéphane; Tittelein, Pierre; Defer, Didier Efficient Characterization of Macroscopic Composite Cement Mortars with Various Contents of Phase Change Material Dans: Applied Sciences, 9 (6), p. 1104, 2019. Résumé | Liens @article{zalewski_efficient_2019,
title = {Efficient Characterization of Macroscopic Composite Cement Mortars with Various Contents of Phase Change Material},
author = {Laurent Zalewski and Erwin Franquet and Stéphane Gibout and Pierre Tittelein and Didier Defer},
url = {https://www.mdpi.com/2076-3417/9/6/1104},
doi = {10.3390/app9061104},
year = {2019},
date = {2019-01-01},
urldate = {2019-03-19},
journal = {Applied Sciences},
volume = {9},
number = {6},
pages = {1104},
abstract = {The determination of both the thermal and thermodynamical properties of a composite material containing phase change material is done thanks to an inverse method, which combines experimental measurements and numerical computations. Given first an in-house experiment, which allows us to test samples at a macroscopic scale (i.e., close to the real conditions) and to set various types of thermal stresses, and secondly the simulation of the corresponding thermal behavior, relying on an accurate thermodynamical modeling and taking into account the real operating parameters (e.g., thermal contact resistances and non-symmetric heat fluxes on each side), it is possible to characterize the solid and liquid thermal conductivities and heat capacities, as well as the temperature range associated with a non-isothermal phase transition and the associated latent heat. The specificity of the present approach is to allow, in a single step, a characterization of all the involved thermo-physical parameters that are usually required in simulation tools (e.g., EnergyPlus…). Moreover, the hitherto studies dealing with repeatability and uncertainties of the enthalpy characterization are generally very scant and not encountered very often or only with qualitative assessments. This is a clear caveat, especially when considering any system design. Therefore, for the first time ever, the present paper pays a special attention to the repeatability of the identification method and studies the scedasticity of the results, that is to say the deviations of the determined enthalpy curves, not only from a qualitative point of view but also by proposing quantitative arguments. Finally, the results are very promising since the agreement between all trials is excellent, the maximum error for all parameters being lower than 4%. This is far below the current quality thresholds admitted when characterizing the enthalpy of a phase change material.},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
The determination of both the thermal and thermodynamical properties of a composite material containing phase change material is done thanks to an inverse method, which combines experimental measurements and numerical computations. Given first an in-house experiment, which allows us to test samples at a macroscopic scale (i.e., close to the real conditions) and to set various types of thermal stresses, and secondly the simulation of the corresponding thermal behavior, relying on an accurate thermodynamical modeling and taking into account the real operating parameters (e.g., thermal contact resistances and non-symmetric heat fluxes on each side), it is possible to characterize the solid and liquid thermal conductivities and heat capacities, as well as the temperature range associated with a non-isothermal phase transition and the associated latent heat. The specificity of the present approach is to allow, in a single step, a characterization of all the involved thermo-physical parameters that are usually required in simulation tools (e.g., EnergyPlus…). Moreover, the hitherto studies dealing with repeatability and uncertainties of the enthalpy characterization are generally very scant and not encountered very often or only with qualitative assessments. This is a clear caveat, especially when considering any system design. Therefore, for the first time ever, the present paper pays a special attention to the repeatability of the identification method and studies the scedasticity of the results, that is to say the deviations of the determined enthalpy curves, not only from a qualitative point of view but also by proposing quantitative arguments. Finally, the results are very promising since the agreement between all trials is excellent, the maximum error for all parameters being lower than 4%. This is far below the current quality thresholds admitted when characterizing the enthalpy of a phase change material. |
2019Article de journal ER5 Auteurs : Yehya, Alissar; Naji, Hassane; Zalewski, Laurent Experimental and numerical characterization of an impure phase change material using a thermal lattice Boltzmann method Dans: Applied Thermal Engineering, 2019, ISSN: 1359-4311. Résumé | Liens @article{yehya_experimental_2019,
title = {Experimental and numerical characterization of an impure phase change material using a thermal lattice Boltzmann method},
author = {Alissar Yehya and Hassane Naji and Laurent Zalewski},
url = {http://www.sciencedirect.com/science/article/pii/S1359431118357569},
doi = {10.1016/j.applthermaleng.2019.03.026},
issn = {1359-4311},
year = {2019},
date = {2019-01-01},
urldate = {2019-03-14},
journal = {Applied Thermal Engineering},
abstract = {Of the phase change materials (PCMs) that regulate ambient temperature while reducing energy consumption, Octadecane is a good candidate because of its transparency properties and its adequate melting temperature. This study aims to characterize, through an approach combining numerical simulation and experiment, the behavior and thermo-physical properties of n-Octadecane. The approach takes into consideration the natural convection and the use of PCM's experimentally-obtained enthalpy-temperature curve that includes the supercooling and soluble impurities effects. The model uses the thermal lattice Boltzmann method based both on a partial bounce-back and an enthalpy formulation while including the experimental relationships. The numerical and experimental results exhibit good agreement. The approach adopted allows to highlight the behavior of the PCM to better characterize its thermo-physical properties.},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
Of the phase change materials (PCMs) that regulate ambient temperature while reducing energy consumption, Octadecane is a good candidate because of its transparency properties and its adequate melting temperature. This study aims to characterize, through an approach combining numerical simulation and experiment, the behavior and thermo-physical properties of n-Octadecane. The approach takes into consideration the natural convection and the use of PCM's experimentally-obtained enthalpy-temperature curve that includes the supercooling and soluble impurities effects. The model uses the thermal lattice Boltzmann method based both on a partial bounce-back and an enthalpy formulation while including the experimental relationships. The numerical and experimental results exhibit good agreement. The approach adopted allows to highlight the behavior of the PCM to better characterize its thermo-physical properties. |
2019Article de journal ER5 Auteurs : Cherif, Yassine; SASSINE, Emilio; Zalewski, Laurent; SOUIDI, Kaies; Lassue, Stephane Experimental analysis of natural convection and flow visualization in an asymmetrically heated open vertical channel Dans: Journal of Thermal Science and Engineering Applications, p. 1–34, 2019, ISSN: 1948-5085. Résumé | Liens @article{cherif_experimental_2019,
title = {Experimental analysis of natural convection and flow visualization in an asymmetrically heated open vertical channel},
author = {Yassine Cherif and Emilio SASSINE and Laurent Zalewski and Kaies SOUIDI and Stephane Lassue},
url = {http://dx.doi.org/10.1115/1.4043533},
doi = {10.1115/1.4043533},
issn = {1948-5085},
year = {2019},
date = {2019-01-01},
urldate = {2019-04-23},
journal = {Journal of Thermal Science and Engineering Applications},
pages = {1--34},
abstract = {An experimental device was designed to perform the thermal and dynamic study of natural convection airflow in an open vertical channel. The two side walls of the vertical channel are made of Plexiglas allowing the visualization of the flow via the PIV method. For the two other vertical walls, one is heated at a constant temperature, and the other is insulated with a 9 cm thick polystyrene insulation. The dynamic characterization of convection is carried out by non-intrusive measurements (Particle Image Velocimetry (PIV)) and thermal phenomena are analyzed using non-intrusive heat flux instrumentation (Simultaneous temperature and velocity measurements have been carried out across the channel at different elevations). Moreover, this study deals with the influence of the Rayleigh number on the measured vertical velocity profiles as well as the thermal flux densities recorded along the heated wall. To do this, different values of the modified Rayleigh numbers were considered in the interval with the channel aspect ratio respectively of A= 5; and A = 12.5. The numbers of Nusselt obtained have been compared successfully with those of the literature. The effects of Rayleigh number and aspect ratio, on the velocity profiles, the convective and radiation heat transfer are examined in detail.},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
An experimental device was designed to perform the thermal and dynamic study of natural convection airflow in an open vertical channel. The two side walls of the vertical channel are made of Plexiglas allowing the visualization of the flow via the PIV method. For the two other vertical walls, one is heated at a constant temperature, and the other is insulated with a 9 cm thick polystyrene insulation. The dynamic characterization of convection is carried out by non-intrusive measurements (Particle Image Velocimetry (PIV)) and thermal phenomena are analyzed using non-intrusive heat flux instrumentation (Simultaneous temperature and velocity measurements have been carried out across the channel at different elevations). Moreover, this study deals with the influence of the Rayleigh number on the measured vertical velocity profiles as well as the thermal flux densities recorded along the heated wall. To do this, different values of the modified Rayleigh numbers were considered in the interval with the channel aspect ratio respectively of A= 5; and A = 12.5. The numbers of Nusselt obtained have been compared successfully with those of the literature. The effects of Rayleigh number and aspect ratio, on the velocity profiles, the convective and radiation heat transfer are examined in detail. |
2019Article de journal ER5 Auteurs : Keo, Sam-Ang; Yune, Chan-Young; Dragan, Razvan-Gabriel; Defer, Didier; Breaban, Florin Analysis of effects of diffraction and interference on detection by microwave thermography Dans: Journal of Civil Structural Health Monitoring, 2019, (ACL). Liens @article{Keo2019,
title = {Analysis of effects of diffraction and interference on detection by microwave thermography},
author = {Sam-Ang Keo and Chan-Young Yune and Razvan-Gabriel Dragan and Didier Defer and Florin Breaban},
url = {https://link.springer.com/article/10.1007/s13349-019-00329-8#citeas},
doi = {10.1007/s13349-019-00329-8},
year = {2019},
date = {2019-03-01},
journal = {Journal of Civil Structural Health Monitoring},
publisher = {Springer Nature},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2019Article de journal ER5 Auteurs : Sassine, Emilio; Cherif, Yassine; Antczak, Emmanuel Parametric identification of thermophysical properties in masonry walls of buildings Dans: Journal of Building Engineering, 25 , p. 100801, 2019, ISSN: 2352-7102, (ACL). Résumé | Liens @article{SASSINE2019100801,
title = {Parametric identification of thermophysical properties in masonry walls of buildings},
author = {Emilio Sassine and Yassine Cherif and Emmanuel Antczak},
url = {http://www.sciencedirect.com/science/article/pii/S235271021930035X},
doi = {https://doi.org/10.1016/j.jobe.2019.100801},
issn = {2352-7102},
year = {2019},
date = {2019-01-01},
journal = {Journal of Building Engineering},
volume = {25},
pages = {100801},
abstract = {The objective of this work is to improve the knowledge on the thermophysical characterization of opaque walls by determining the thermophysical properties of an experimental massive brick wall identical to old buildings walls in the North of Europe. This method allows the determination of equivalent dynamic thermal properties of existing building walls λ and ρCp by simple measurement records of the inner (Twi) and outer (Two) wall temperatures as well as heat flux at the inner (or outer) face of the wall Fi. The approach developed here consists in carrying out a parametric identification of the thermophysical properties of the wall in question (namely the thermal conductivity λ and the heat capacity ρCp), by comparing and minimizing the difference between the results resulting from the experimental tests and those resulting from the numerical model. The optimization of the identified parameters is based on the Levenberg-Marquardt algorithm via the Comsol tool. The validation of the algorithm was carried out as well as its use in different ambient conditions (harmonic and random temperature profiles). The investigated method shows satisfactory results for both λ (0.877, 0.880, and 0.935 W/(m.K)) and ρCp (1,012,400, 944,710, and 1,057,100 J/(m3.K)). The inner heat exchange coefficient hi was also successfully determined for the three tests with similar values (6.13, 6.53, and 6.03 W/m2.K). The results were also confirmed by comparing measured and numerical outer heat fluxes for the optimized values. The second part of this article is devoted to the study of the sensitivity of the results with respect to various parameters: the optimization algorithm, the total simulation time, the simulation time step, and the meshing element size.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
The objective of this work is to improve the knowledge on the thermophysical characterization of opaque walls by determining the thermophysical properties of an experimental massive brick wall identical to old buildings walls in the North of Europe. This method allows the determination of equivalent dynamic thermal properties of existing building walls λ and ρCp by simple measurement records of the inner (Twi) and outer (Two) wall temperatures as well as heat flux at the inner (or outer) face of the wall Fi. The approach developed here consists in carrying out a parametric identification of the thermophysical properties of the wall in question (namely the thermal conductivity λ and the heat capacity ρCp), by comparing and minimizing the difference between the results resulting from the experimental tests and those resulting from the numerical model. The optimization of the identified parameters is based on the Levenberg-Marquardt algorithm via the Comsol tool. The validation of the algorithm was carried out as well as its use in different ambient conditions (harmonic and random temperature profiles). The investigated method shows satisfactory results for both λ (0.877, 0.880, and 0.935 W/(m.K)) and ρCp (1,012,400, 944,710, and 1,057,100 J/(m3.K)). The inner heat exchange coefficient hi was also successfully determined for the three tests with similar values (6.13, 6.53, and 6.03 W/m2.K). The results were also confirmed by comparing measured and numerical outer heat fluxes for the optimized values. The second part of this article is devoted to the study of the sensitivity of the results with respect to various parameters: the optimization algorithm, the total simulation time, the simulation time step, and the meshing element size. |
2019Article de journal ER5 Auteurs : Ferreira, M C S; Furieri, B; A., Ould El Moctar; Harion, Jean-Luc; Valance, A; Dupont, P; Reis, N C; Santos, J M A simple model to estimate emission of wind-blown particles from a granular bed in comparison to wind tunnel experiments Dans: Geomorphology, 335 , p. 1 - 13, 2019, ISSN: 0169-555X, (ACL). Résumé | Liens @article{Ferreira.etal2019,
title = {A simple model to estimate emission of wind-blown particles from a granular bed in comparison to wind tunnel experiments},
author = {M C S Ferreira and B Furieri and Ould El Moctar A. and Jean-Luc Harion and A Valance and P Dupont and N C Reis and J M Santos},
url = {http://www.sciencedirect.com/science/article/pii/S0169555X1930090X},
doi = {https://doi.org/10.1016/j.geomorph.2019.03.004},
issn = {0169-555X},
year = {2019},
date = {2019-01-01},
journal = {Geomorphology},
volume = {335},
pages = {1 - 13},
abstract = {Dust emissions due to aeolian erosion of exposed granular materials are strongly influenced by grain size distribution. Non-erodible particles that are too heavy to be lifted into the air play a protective role in the aeolian erosion process attenuating emission, which is known as the pavement phenomenon. To date, there is no approach that reliably predicts the reduction in emissions caused by their presence on an aggregate surface. In this work, an analytical model was developed to quantify emissions from particle beds with a wide size distribution. As non-erodible particles accumulate, changes in surface characteristics create increasing shelter for the erodible portion of the bed until the shear on the erodible surface reaches a minimum and emissions cease. The proposed emission model describes the relationship between this minimum value of wind shear and the eroded depth of the bed after the pavement, which in turn gives the emitted mass. In addition, wind tunnel experiments were carried out in order to broaden knowledge of the pavement phenomenon and validate the modelling. A bimodal particle size distribution of sand with erodible and non-erodible particles was used for the tested velocities. Three experimental measurements were carried out: (i) continuous weighing of the emitted mass, (ii) eroded depth of the bed at regular time intervals and (iii) final cover rates of the non-erodible particles using digital analysis of sand bed pictures after experiments. Good agreement between the modelling and experimental results was found. The emission model proposed herein is a simple algebraic expression that demands low computational effort. This approach may serve as a base for an emission model for application in granular materials stockpiles.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
Dust emissions due to aeolian erosion of exposed granular materials are strongly influenced by grain size distribution. Non-erodible particles that are too heavy to be lifted into the air play a protective role in the aeolian erosion process attenuating emission, which is known as the pavement phenomenon. To date, there is no approach that reliably predicts the reduction in emissions caused by their presence on an aggregate surface. In this work, an analytical model was developed to quantify emissions from particle beds with a wide size distribution. As non-erodible particles accumulate, changes in surface characteristics create increasing shelter for the erodible portion of the bed until the shear on the erodible surface reaches a minimum and emissions cease. The proposed emission model describes the relationship between this minimum value of wind shear and the eroded depth of the bed after the pavement, which in turn gives the emitted mass. In addition, wind tunnel experiments were carried out in order to broaden knowledge of the pavement phenomenon and validate the modelling. A bimodal particle size distribution of sand with erodible and non-erodible particles was used for the tested velocities. Three experimental measurements were carried out: (i) continuous weighing of the emitted mass, (ii) eroded depth of the bed at regular time intervals and (iii) final cover rates of the non-erodible particles using digital analysis of sand bed pictures after experiments. Good agreement between the modelling and experimental results was found. The emission model proposed herein is a simple algebraic expression that demands low computational effort. This approach may serve as a base for an emission model for application in granular materials stockpiles. |
2019Article de journal ER5 Auteurs : Subramaniam, V; Dbouk, T; Harion, Jean-Luc Topology optimization of conjugate heat transfer systems: A competition between heat transfer enhancement and pressure drop reduction Dans: International Journal of Heat and Fluid Flow, 75 , p. 165 - 184, 2019, ISSN: 0142-727X, (ACL). Résumé | Liens @article{Subramaniam.etal2019,
title = {Topology optimization of conjugate heat transfer systems: A competition between heat transfer enhancement and pressure drop reduction},
author = {V Subramaniam and T Dbouk and Jean-Luc Harion},
url = {http://www.sciencedirect.com/science/article/pii/S0142727X18311342},
doi = {https://doi.org/10.1016/j.ijheatfluidflow.2019.01.002},
issn = {0142-727X},
year = {2019},
date = {2019-01-01},
journal = {International Journal of Heat and Fluid Flow},
volume = {75},
pages = {165 - 184},
abstract = {Topology optimization method is developed for a multi-objective function combining pressure drop reduction and thermal power maximization (incompressible flows at low to moderate Reynolds numbers). Innovative optimal designs are obtained, discussed and presented on a Pareto-frontier. The numerical developments (continuous adjoint technique) have been conducted inside an open source CFD platform via the finite volume method. Comparisons have been presented with an optimal design obtained by a Lattice Boltzmann Method from the literature. Finally, this contribution presents and discuss several detailed numerical vitrification steps which are essential to be conducted in topology optimization method when applied with multi-objective functions.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
Topology optimization method is developed for a multi-objective function combining pressure drop reduction and thermal power maximization (incompressible flows at low to moderate Reynolds numbers). Innovative optimal designs are obtained, discussed and presented on a Pareto-frontier. The numerical developments (continuous adjoint technique) have been conducted inside an open source CFD platform via the finite volume method. Comparisons have been presented with an optimal design obtained by a Lattice Boltzmann Method from the literature. Finally, this contribution presents and discuss several detailed numerical vitrification steps which are essential to be conducted in topology optimization method when applied with multi-objective functions. |
2019Article de journal ER5 Auteurs : Carbone, Giovanni; Martinat, Guillaume; Farcy, Dominique; Harion, Jean-Luc Added Masses of generic shape bodies interacting with external walls Dans: Aerospace Science and Technology, 90 , p. 70 - 84, 2019, ISSN: 1270-9638, (ACL). Résumé | Liens @article{Carbone.etal2019,
title = {Added Masses of generic shape bodies interacting with external walls},
author = {Giovanni Carbone and Guillaume Martinat and Dominique Farcy and Jean-Luc Harion},
url = {http://www.sciencedirect.com/science/article/pii/S1270963819304754},
doi = {https://doi.org/10.1016/j.ast.2019.04.035},
issn = {1270-9638},
year = {2019},
date = {2019-01-01},
journal = {Aerospace Science and Technology},
volume = {90},
pages = {70 - 84},
abstract = {The aim of this paper is to propose an efficient method to evaluate the Added Masses of generic shape bodies in infinite fluid or in the proximity of external walls. The Added Masses (AM) are the result of the inertial reaction of the fluid in response to an accelerated movement of a body immersed in it. The AM effects are more evident when the body density is similar to that of the surrounding fluid, as in the case of airships. In the take-off or landing phases, the proximity to the ground causes an increase in the Added Masses that must be correctly estimated to properly size the airship controls. In our method, the calculation of the Added Masses matrix is carried out by the Boundary Element Method (BEM). To verify the accuracy of the results, the study cases are based on simple shapes, whose Added Masses are well known. The analyses in infinite fluid and in the presence of a flat wall are carried out. Numerical results are compared to the theoretical values found in literature. The calculated Added Masses are intrinsically dependent on the mesh definition and the relative error, referred to the theoretical values, depends on the surface and volume discretization. In the case of interaction between geometries with complex shapes, the influence on the Added Masses is very difficult to predict without a numerical approach. The method proposed gives a good compromise in terms of quality of results and computational cost.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
The aim of this paper is to propose an efficient method to evaluate the Added Masses of generic shape bodies in infinite fluid or in the proximity of external walls. The Added Masses (AM) are the result of the inertial reaction of the fluid in response to an accelerated movement of a body immersed in it. The AM effects are more evident when the body density is similar to that of the surrounding fluid, as in the case of airships. In the take-off or landing phases, the proximity to the ground causes an increase in the Added Masses that must be correctly estimated to properly size the airship controls. In our method, the calculation of the Added Masses matrix is carried out by the Boundary Element Method (BEM). To verify the accuracy of the results, the study cases are based on simple shapes, whose Added Masses are well known. The analyses in infinite fluid and in the presence of a flat wall are carried out. Numerical results are compared to the theoretical values found in literature. The calculated Added Masses are intrinsically dependent on the mesh definition and the relative error, referred to the theoretical values, depends on the surface and volume discretization. In the case of interaction between geometries with complex shapes, the influence on the Added Masses is very difficult to predict without a numerical approach. The method proposed gives a good compromise in terms of quality of results and computational cost. |
2019Conférence ER5 Auteurs : Harion, Jean-Luc; Donze, S Modélisation de trempe thermique du verre dans l'industrie verrière des arts de la table Congrès Français de Mécanique, 2019, (ACTN). Résumé | Liens @conference{Harion.Donze2019a,
title = {Modélisation de trempe thermique du verre dans l'industrie verrière des arts de la table},
author = {Jean-Luc Harion and S Donze},
doi = {https://cfm2019.sciencesconf.org/270918},
year = {2019},
date = {2019-01-01},
booktitle = {Congrès Français de Mécanique},
abstract = {Dans les marchés liés aux arts de la table, pour lesquels ARC est un des leaders mondiaux, les articles en verre trempés représentent une part très significative des volumes de production et des ventes. Une attention particulière et une constante innovation sont donc dédiées à cette phase particulière du process verrier. En termes de production, l'exigence accrue des cahiers des charges clients, de qualité de production, mais aussi de limitation de l'impact environnemental, nécessitent une maîtrise accrue et des connaissances plus fines et précises du process. En parallèle d'études et de recherches menées sur bancs expérimentaux spécifiques et de tests sur chaînes de production, la modélisation numérique représente un outil central d'investigation et de recherche. La trempe du verre est un process largement utilisé et déployé depuis de nombreuses années dans l'industrie verrière. Elle fait intervenir un nombre significatif de paramètres physiques et physico-chimiques tels que notamment les configurations géométriques, la thermique de refroidissement et de chauffage, ou encore la composition du verre. L'analyse bibliographique sur la modélisation de la trempe du verre fait apparaître plusieurs points clés de développement pour une utilisation dimensionnante et prédictive dans l'industrie verrière des arts de la table. La bibliographie est quasi-exclusivement dédié au verre plat et le refroidissement est quasi-exclusivement simulé par des coefficients de transfert imposés uniformément en surfaces. Les productions dans l'industrie des arts de la table sont très fortement tridimensionnelles, tant en géométries qu'en répartitions d'épaisseurs et les systèmes de refroidissement sont loin de produire des transferts pouvant raisonnablement être modélisés par des coefficients de transfert constants et uniformément répartis. Ainsi des modélisations intégrant des géométries réalistes et un couplage conducto-convectif représentant les systèmes de refroidissement ont été mises en œuvre. Cette communication illustre la nécessité de cette démarche pour développer des modèles prédictifs.},
note = {ACTN},
keywords = {ER5},
pubstate = {published},
tppubtype = {conference}
}
Dans les marchés liés aux arts de la table, pour lesquels ARC est un des leaders mondiaux, les articles en verre trempés représentent une part très significative des volumes de production et des ventes. Une attention particulière et une constante innovation sont donc dédiées à cette phase particulière du process verrier. En termes de production, l'exigence accrue des cahiers des charges clients, de qualité de production, mais aussi de limitation de l'impact environnemental, nécessitent une maîtrise accrue et des connaissances plus fines et précises du process. En parallèle d'études et de recherches menées sur bancs expérimentaux spécifiques et de tests sur chaînes de production, la modélisation numérique représente un outil central d'investigation et de recherche. La trempe du verre est un process largement utilisé et déployé depuis de nombreuses années dans l'industrie verrière. Elle fait intervenir un nombre significatif de paramètres physiques et physico-chimiques tels que notamment les configurations géométriques, la thermique de refroidissement et de chauffage, ou encore la composition du verre. L'analyse bibliographique sur la modélisation de la trempe du verre fait apparaître plusieurs points clés de développement pour une utilisation dimensionnante et prédictive dans l'industrie verrière des arts de la table. La bibliographie est quasi-exclusivement dédié au verre plat et le refroidissement est quasi-exclusivement simulé par des coefficients de transfert imposés uniformément en surfaces. Les productions dans l'industrie des arts de la table sont très fortement tridimensionnelles, tant en géométries qu'en répartitions d'épaisseurs et les systèmes de refroidissement sont loin de produire des transferts pouvant raisonnablement être modélisés par des coefficients de transfert constants et uniformément répartis. Ainsi des modélisations intégrant des géométries réalistes et un couplage conducto-convectif représentant les systèmes de refroidissement ont été mises en œuvre. Cette communication illustre la nécessité de cette démarche pour développer des modèles prédictifs. |
2019Conférence ER5 Auteurs : Harion, Jean-Luc; Donze, S Modélisations multi-physiques dans l’industrie verrière des arts de la table, illustrations de quelques points clés Journée CARNOT, Les défis du verre vert, Paris, 2019, (COM). Liens @conference{Harion.Donze2019b,
title = {Modélisations multi-physiques dans l’industrie verrière des arts de la table, illustrations de quelques points clés},
author = {Jean-Luc Harion and S Donze},
doi = {https://cfm2019.sciencesconf.org/270918},
year = {2019},
date = {2019-01-01},
booktitle = {Journée CARNOT, Les défis du verre vert, Paris},
note = {COM},
keywords = {ER5},
pubstate = {published},
tppubtype = {conference}
}
|
2019Conférence ER5 Auteurs : Donze, S; Harion, Jean-Luc Modélisation de la génération de contraintes lors de la trempe du verre Les Journées Révelor, Vers la Transition Vitreuse et au-delà, 2019, (COM). Résumé | Liens @conference{Donze.Harion2019,
title = {Modélisation de la génération de contraintes lors de la trempe du verre},
author = {S Donze and Jean-Luc Harion},
doi = {https://cfm2019.sciencesconf.org/270918},
year = {2019},
date = {2019-01-01},
booktitle = {Les Journées Révelor, Vers la Transition Vitreuse et au-delà},
abstract = {Les articles en verre trempés représentent une part très significative en volumes de production et de vente sur les marchés liés aux arts de la table, pour lesquels ARC est un des leaders mondiaux. En termes de production, l’exigence accrue des cahiers des charges clients, de qualité de production, mais aussi de limitation de l’impact environnemental, nécessite une maîtrise accrue et des connaissances plus fines et précises du process. Ainsi, une attention très particulière est portée par ARC à cette phase particulière du procédé verrier et une constante innovation est apportée pour améliorer ses performances.
En parallèle d’études et de recherches menées sur bancs expérimentaux spécifiques et de tests sur chaînes de production, la modélisation numérique représente un outil central d’investigation et de recherche.
La trempe du verre fait intervenir un nombre significatif de paramètres physiques et physico-chimiques tels que notamment les configurations géométriques, la thermique de refroidissement et de chauffage, ou encore la composition du verre.
L’analyse bibliographique sur la modélisation de la trempe du verre fait apparaître plusieurs points clés de développement pour une utilisation dimensionnante et prédictive dans l’industrie verrière des arts de la table :
- Prise en compte et analyse détaillée des effets tridimensionnels. Les productions dans l’industrie des arts de la table sont très fortement tridimensionnelles, tant en géométries qu’en répartitions d’épaisseurs. L’évolution des designs va dans le sens d’une accentuation de ce point.
- Couplage conducto-convectif. Les conditions limites prises en compte dans la bibliographie portent quasi-exclusivement sur des coefficients de transfert imposés uniformément en surface. Les systèmes de refroidissement sont loin de produire réellement ce type de condition limite thermique.
- Optimisation. Au-delà du dimensionnement et des enjeux de production rappelés précédemment, la modélisation permet de mettre en place des boucles de calculs afin d’optimiser une fonction objectif donnée.
- Validations et vérifications expérimentales des contraintes produites. Les mesures de contraintes dans les verres trempés, notamment en configurations fortement tridimensionnelles représentent également un enjeu important notamment pour disposer d’outil de vérification et validation des modèles.},
note = {COM},
keywords = {ER5},
pubstate = {published},
tppubtype = {conference}
}
Les articles en verre trempés représentent une part très significative en volumes de production et de vente sur les marchés liés aux arts de la table, pour lesquels ARC est un des leaders mondiaux. En termes de production, l’exigence accrue des cahiers des charges clients, de qualité de production, mais aussi de limitation de l’impact environnemental, nécessite une maîtrise accrue et des connaissances plus fines et précises du process. Ainsi, une attention très particulière est portée par ARC à cette phase particulière du procédé verrier et une constante innovation est apportée pour améliorer ses performances.
En parallèle d’études et de recherches menées sur bancs expérimentaux spécifiques et de tests sur chaînes de production, la modélisation numérique représente un outil central d’investigation et de recherche.
La trempe du verre fait intervenir un nombre significatif de paramètres physiques et physico-chimiques tels que notamment les configurations géométriques, la thermique de refroidissement et de chauffage, ou encore la composition du verre.
L’analyse bibliographique sur la modélisation de la trempe du verre fait apparaître plusieurs points clés de développement pour une utilisation dimensionnante et prédictive dans l’industrie verrière des arts de la table :
- Prise en compte et analyse détaillée des effets tridimensionnels. Les productions dans l’industrie des arts de la table sont très fortement tridimensionnelles, tant en géométries qu’en répartitions d’épaisseurs. L’évolution des designs va dans le sens d’une accentuation de ce point.
- Couplage conducto-convectif. Les conditions limites prises en compte dans la bibliographie portent quasi-exclusivement sur des coefficients de transfert imposés uniformément en surface. Les systèmes de refroidissement sont loin de produire réellement ce type de condition limite thermique.
- Optimisation. Au-delà du dimensionnement et des enjeux de production rappelés précédemment, la modélisation permet de mettre en place des boucles de calculs afin d’optimiser une fonction objectif donnée.
- Validations et vérifications expérimentales des contraintes produites. Les mesures de contraintes dans les verres trempés, notamment en configurations fortement tridimensionnelles représentent également un enjeu important notamment pour disposer d’outil de vérification et validation des modèles. |
2019Article de journal ER5 Auteurs : Akil, Mostafa; Tittelein, Pierre; Defer, Didier; Suard, Frédéric Statistical indicator for the detection of anomalies in gas, electricity and water consumption: Application of smart monitoring for educational buildings Dans: Energy and Buildings, 199 , p. 512–522, 2019, ISSN: 0378-7788, (ACL). Résumé | Liens @article{akil_statistical_2019,
title = {Statistical indicator for the detection of anomalies in gas, electricity and water consumption: Application of smart monitoring for educational buildings},
author = {Mostafa Akil and Pierre Tittelein and Didier Defer and Frédéric Suard},
url = {http://www.sciencedirect.com/science/article/pii/S0378778818332511},
doi = {10.1016/j.enbuild.2019.07.025},
issn = {0378-7788},
year = {2019},
date = {2019-01-01},
urldate = {2019-09-02},
journal = {Energy and Buildings},
volume = {199},
pages = {512--522},
abstract = {Building facility managers are increasingly equipping their buildings with extensive sets of sensors. This article aims to develop an analysis decision-making methodology based on the production of statistical indicators. The tracking of such indicators allows detecting any systems performance problems. The automatic pinpointing of malfunctions can serve to activate alerts. Our approach focuses on the processing of data stemming from secondary schools managed by departmental services in the Pas-de-Calais, where 117 secondary school buildings have been instrumented with various sensors and supplying data since 2015. This article starts with a close-up on data mining for water, gas and electricity consumption. Data mining and machine learning methods, including the Clustering approach (K-Means), have been used to extract information from the measurements conducted in 2015 and 2016. This information is used to classify the 2017 measurements according to supervised approaches (SVM). The specificity of this work is to delve deeper into the analysis by combining into the same algorithm a set of various sensors related to both energy use and building occupancy. The data classification results have allowed highlighting "atypical" operations during the daytime, through interpreting data classification results in an effort to define the status of every day in year 2017.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
Building facility managers are increasingly equipping their buildings with extensive sets of sensors. This article aims to develop an analysis decision-making methodology based on the production of statistical indicators. The tracking of such indicators allows detecting any systems performance problems. The automatic pinpointing of malfunctions can serve to activate alerts. Our approach focuses on the processing of data stemming from secondary schools managed by departmental services in the Pas-de-Calais, where 117 secondary school buildings have been instrumented with various sensors and supplying data since 2015. This article starts with a close-up on data mining for water, gas and electricity consumption. Data mining and machine learning methods, including the Clustering approach (K-Means), have been used to extract information from the measurements conducted in 2015 and 2016. This information is used to classify the 2017 measurements according to supervised approaches (SVM). The specificity of this work is to delve deeper into the analysis by combining into the same algorithm a set of various sensors related to both energy use and building occupancy. The data classification results have allowed highlighting "atypical" operations during the daytime, through interpreting data classification results in an effort to define the status of every day in year 2017. |
2019Inproceedings ER5 Auteurs : Abdellatif, Makram; Chamoin, Julien; Defer, Didier A thermal control methodology based on a predictive model for indoor heating management Dans: p. 01001, 2019. Liens @inproceedings{refId0c,
title = {A thermal control methodology based on a predictive model for indoor heating management},
author = {Makram Abdellatif and Julien Chamoin and Didier Defer},
url = {https://doi.org/10.1051/matecconf/201929501001},
doi = {10.1051/matecconf/201929501001},
year = {2019},
date = {2019-01-01},
journal = {MATEC Web Conf.},
volume = {295},
pages = {01001},
keywords = {ER5},
pubstate = {published},
tppubtype = {inproceedings}
}
|
2019Article de journal ER5 Auteurs : Alhaj-Hasan, Ola; Defer, Didier A thermal control methodology based on a predictive model for indoor heating management Dans: International Journal of Smart Grid and Clean Energy, 295 (4), p. 01001, 2019, ISSN: 2315-4462. Liens @article{AlhajHasan2019,
title = {A thermal control methodology based on a predictive model for indoor heating management},
author = {Ola Alhaj-Hasan and Didier Defer},
url = {https://doi.org/10.12720/sgce.8.4.397-401},
doi = {10.12720/sgce.8.4.397-401},
issn = {2315-4462},
year = {2019},
date = {2019-01-01},
journal = {International Journal of Smart Grid and Clean Energy},
volume = {295},
number = {4},
pages = {01001},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2019Conférence ER5 Auteurs : Colli, Carolina; Bataille, Alain; Antczak, Emmanuel Rebond effects on life cycle assessment of a house refurbishment Lille, France, Lille, 2019. @conference{Collib,
title = {Rebond effects on life cycle assessment of a house refurbishment},
author = {Carolina Colli and Alain Bataille and Emmanuel Antczak},
year = {2019},
date = {2019-01-01},
booktitle = {Lille, France},
address = {Lille},
keywords = {ER5},
pubstate = {published},
tppubtype = {conference}
}
|
2019Conférence ER5 Auteurs : Colli, Carolina; Bataille, Alain; Antczak, Emmanuel Whole-Life Costing of a French Single-Family House Refurbishment: the “Bat-Eco2” case study Sustainable Building Environment, Graz, Austria, 2019. @conference{Collia,
title = {Whole-Life Costing of a French Single-Family House Refurbishment: the “Bat-Eco2” case study},
author = {Carolina Colli and Alain Bataille and Emmanuel Antczak},
year = {2019},
date = {2019-01-01},
booktitle = {Sustainable Building Environment, Graz, Austria},
keywords = {ER5},
pubstate = {published},
tppubtype = {conference}
}
|
2019Article de journal ER5 Auteurs : Thibodeau, Charles; Bataille, Alain; Colli, Carolina; Sie, Marion Building rehabilitation life cycle assessment methodology-state of the art Dans: Ren. Sus. Energy. Reviews, April 2019, Pages 408-422, 2019. @article{Thibodeau2019,
title = {Building rehabilitation life cycle assessment methodology-state of the art},
author = {Charles Thibodeau and Alain Bataille and Carolina Colli and Marion Sie},
year = {2019},
date = {2019-01-01},
journal = {Ren. Sus. Energy. Reviews, April 2019, Pages 408-422},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2019Conférence ER5 Auteurs : Sassine, Emilio; Cherif, Yassine; Antczak, Emmanuel Identification paramétrique des propriétés thermophysiques d’un mur en brique ancienne : Approches expérimentale et numérique 2019. @conference{Sassine2019b,
title = {Identification paramétrique des propriétés thermophysiques d’un mur en brique ancienne : Approches expérimentale et numérique},
author = {Emilio Sassine and Yassine Cherif and Emmanuel Antczak},
year = {2019},
date = {2019-01-01},
journal = {XIVème Colloque International Franco-Québécois en énergie16-20 juin 2019, École de technologie supérieure, Université du QuébecBaie St-Paul, Québec, Canada},
keywords = {ER5},
pubstate = {published},
tppubtype = {conference}
}
|
2019Article de journal ER5 Auteurs : Sassine, Emilio; Cherif, Yassine; Antczak, Emmanuel Parametric identification of thermophysical properties in masonry walls of buildings Dans: Journal of Building Engineering, 2019. Liens @article{Sassinek,
title = {Parametric identification of thermophysical properties in masonry walls of buildings},
author = {Emilio Sassine and Yassine Cherif and Emmanuel Antczak},
doi = {https://doi.org/10.1016/j.jobe.2019.100801},
year = {2019},
date = {2019-01-01},
journal = {Journal of Building Engineering},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2019Article de journal ER5 Auteurs : Sassine, Emilio; Cherif, Yassine; Antczak, Emmanuel; Dgheim, Joseph Méthodes expérimentales et numériques appliquées à la caractérisationthermophysique d'un mur en briques anciennes en conditionsinstationnaires Dans: Entropie, 2019. @article{Sassinea,
title = {Méthodes expérimentales et numériques appliquées à la caractérisationthermophysique d'un mur en briques anciennes en conditionsinstationnaires},
author = {Emilio Sassine and Yassine Cherif and Emmanuel Antczak and Joseph Dgheim},
year = {2019},
date = {2019-01-01},
journal = {Entropie},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2019Article de journal ER5 Auteurs : Alhaj-Hasan, Ola; Defer, Didier The role of new technologies in understanding the building energy performance: a comparative study Dans: International Journal of Smart Grid and Clean Energy, 8 (4), p. 397-401, 2019, (cited By 0). Liens @article{Hasan2019397,
title = {The role of new technologies in understanding the building energy performance: a comparative study},
author = {Ola Alhaj-Hasan and Didier Defer},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077296427&doi=10.12720%2fsgce.8.4.397-401&partnerID=40&md5=b35c13498bccbb3621b748e75355c1b2},
doi = {10.12720/sgce.8.4.397-401},
year = {2019},
date = {2019-01-01},
journal = {International Journal of Smart Grid and Clean Energy},
volume = {8},
number = {4},
pages = {397-401},
note = {cited By 0},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2019Conférence ER5 Auteurs : Colli, Carolina; Bataille, Alain; Antczak, Emmanuel Whole-Life Costing of a French Single-Family House Refurbishment: The "bat-Eco2" case study 323 (1), 2019, (cited By 0). Liens @conference{Colli2019,
title = {Whole-Life Costing of a French Single-Family House Refurbishment: The "bat-Eco2" case study},
author = {Carolina Colli and Alain Bataille and Emmanuel Antczak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073036407&doi=10.1088%2f1755-1315%2f323%2f1%2f012164&partnerID=40&md5=bc475e95c444dec1f6711b0321b178f2},
doi = {10.1088/1755-1315/323/1/012164},
year = {2019},
date = {2019-01-01},
journal = {IOP Conference Series: Earth and Environmental Science},
volume = {323},
number = {1},
note = {cited By 0},
keywords = {ER5},
pubstate = {published},
tppubtype = {conference}
}
|
