Role of Melt Convection on the Thermal Performance of Heat Sinks with Phase Change Material

Saha, SK and Dutta, Pradip (2008) Role of Melt Convection on the Thermal Performance of Heat Sinks with Phase Change Material. In: 10th Electronics Packing Technology Conference, DEC 09-12, 2008, Singapore, Singapore, pp. 539-544.

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Abstract

The role of melt convection oil the performance of beat sinks with Phase Change Material (PCM) is presented in this paper. The beat sink consists of aluminum plate fins embedded in PCM and heat flux is supplied from the bottom. The design of such a heat sink requires optimization with respect to its geometrical parameters. The objective of the optimization is to maximize the heat sink operation time for the prescribed heat flux and the critical chip temperature. The parameters considered for optimization are fin number and fill thickness. The height and base plate thickness of heat sink are kept constant in the present analysis. An enthalpy based CFD model is developed, which is capable Of Simulating phase change and associated melt convection. The CFD model is Coupled with Genetic Algorithm (GA) for carrying out the optimization. Two cases are considered, one without melt convection (conduction regime) and the other with convection. It is found that the geometrical optimizations of heat sinks are different for the two cases, indicating the importance of inch convection in the design of heat sinks with PCMs.

Item Type:	Conference Paper
Publication:	Eptc: 2008 10th electronics packaging technology conference
Series.:	Electronics Packaging Technology Conference Proceedings
Publisher:	IEEE
Additional Information:	Copyright 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	Electronics cooling;Phase Change Materials;Optimization; genetic algorithm;melt convection.
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	11 Dec 2009 09:10
Last Modified:	19 Sep 2010 05:33
URI:	http://eprints.iisc.ac.in/id/eprint/20573

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