Title :

Theoretical and experimental study of a thermal damper based on a CNT/PCM composite structure for transient electronic cooling

Author(s) :

Kinkelin, Christophe [Auteur]
Centre d'Energétique et de Thermique de Lyon [CETHIL]
Lips, Stéphane [Auteur]
Centre d'Energétique et de Thermique de Lyon [CETHIL]
Soupremanien, Ulrich [Auteur]
Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
Remondière, Vincent [Auteur]
Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
Dijon, Jean [Auteur]
Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
Poche, Hélène Le [Auteur]
Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
Ollier, Emmanuel [Auteur]
Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
Zegaoui, Malek [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Rolland, Nathalie [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Rolland, Paul-Alain [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Lhostis, Sandrine [Auteur]
STMicroelectronics [Crolles] [ST-CROLLES]
Descouts, Brigitte [Auteur]
STMicroelectronics [Crolles] [ST-CROLLES]
Kaplan, Yann [Auteur]
Lefèvre, Frédéric [Auteur]
Centre d'Energétique et de Thermique de Lyon [CETHIL]

Journal title :

Energy Conversion and Management

Pages :

257-271

Publisher :

Elsevier

Publication date :

2017

ISSN :

0196-8904

English keyword(s) :

transient electronic cooling
interfacial thermal resistance
thermal energy storage
Phase change material
vertically aligned carbon nanotubes

HAL domain(s) :

Physique [physics]/Mécanique [physics]/Thermique [physics.class-ph]

English abstract : [en]

The present study focuses on a thermal damper that aims at smoothing the temperature peaks experienced by electronic components during transient solicitations. It consists of a silicon casing containing a densified or ...
Show more >The present study focuses on a thermal damper that aims at smoothing the temperature peaks experienced by electronic components during transient solicitations. It consists of a silicon casing containing a densified or undensified carbon nanotube (CNT) array - linking directly both sides of the system - filled with phase change material (PCM). Theoretical consideration enables to define the concept of ideal thermal damper in order to study the foreseeable performance of this kind of system. Its thermal effectiveness can be predicted by means of two non-dimensional numbers, linked to the thermal capacity of the system and to the latent heat of the PCM. A numerical model shows that the behavior of a non-ideal thermal damper can differ from that of an ideal thermal damper: it is mostly affected by the thermal resistance at the interface between the silicon and the \CNT\ and the temperature glide during the \PCM\ phase change. To complete the study, prototypes of thermal dampers are experimentally characterized, in terms of heat storage and heat conduction performance. An estimation method of the total apparent thermal capacity of the tested sample is developed in order to quantify its latent heat storage capacity. The latent energy storage density is 1.6 J cm−2 for the best sample and is observed to be preserved after 850 thermal cycles. The total thermal resistance of the thermal damper is estimated by means of a laser flash test and a simple model of the sample. Sensitivity analyses show that the main thermal resistances are located at the interfaces between silicon and CNT.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Interposeur 3D pour le management thermique

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL