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Your search keyword '"Bontemps, André"' showing total 8 results
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8 results on '"Bontemps, André"'

3. A phenomenological approach of solidification of polymeric phase change materials.

Author

Bahrani, Seyed Amir, Royon, Laurent, Abou, Bérengère, Osipian, Rémy, Azzouz, Kamel, and Bontemps, André

Subjects
PHASE change materials, THERMAL conductivity, POLYMER fractionation, HEAT storage, THERMAL management (Electronic packaging), STORED energy of cold work
Abstract

Phase Change Materials (PCMs) are widely used in thermal energy storage and thermal management systems due to their small volume for a given stored energy and their capability for maintaining nearly constant temperatures. However, their performance is limited by their low thermal conductivity and possible leaks while in the liquid phase. One solution is to imprison the PCM inside a polymer mesh to create a Polymeric Phase Change Material (PPCM). In this work, we have studied the cooling and solidification of five PPCMs with different PCMs and polymer fractions. To understand the heat transfer mechanisms involved, we have carried out micro- and macrorheological measurements in which Brownian motion of tracers embedded in PPCMs has been depicted and viscoelastic moduli have been measured, respectively. Beyond a given polymer concentration, it was shown that the Brownian motion of the tracers is limited by the polymeric chains and that the material exhibits an elastic behavior. This would suggest that heat transfer essentially occurs by conduction, instead of convection. Experiments were conducted to measure temperature variation during cooling of the five samples, and a semi-empirical model based on a phenomenological approach was proposed as a practical tool to choose and size PPCMs. [ABSTRACT FROM AUTHOR]

Published
2017
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5. Thermal conductivity measurements in phase change polymer composites doped with carbon nanotubes

Author

Bontemps, André, Osipian, Rémy, Padayodi, Essolé, Royon, Laurent, Bahrani, S.-A., Edition, Littératures, Langages, Informatique, Arts, Didactique, Discours - UFC (EA 4661) (ELLIADD), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), and Edition, Littératures, Langages, Informatique, Arts, Didactique, Discours - UFC (UR 4661) (ELLIADD)

Subjects
ComputingMilieux_MISCELLANEOUS, [SHS]Humanities and Social Sciences
Abstract

International audience

Published
2017

6. Analyzing energetic performance of a tube-in-tube heat exchanger using five different nanofluids

Author

Ferrouillat, Sébastien, Bontemps, André, Poncelet, Olivier, Soriano, olivier, Gruss, A, Azzouz, Kamel, Laboratoire des Écoulements Géophysiques et Industriels [Grenoble] (LEGI), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), and FERROUILLAT, Sébastien

Subjects
[SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], [SPI.MECA.MEFL] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS, [SPI.MECA.THER] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph]
Abstract

International audience

Published
2015

7. Microscale and Nanoscale Heat Transfer: Analysis, Design and Application', ch 18 Two phase flow in micro channels

Author

Caney, Nadia, Gualous, Hasna Louahlia, Bontemps, André, Laboratoire des Écoulements Géophysiques et Industriels [Grenoble] (LEGI), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Micro Nano Systems & Science department, Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), and Caney, Nadia

Subjects
[PHYS.MECA.THER] Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], [PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2015

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