Experimental validation of an analytical model for predicting the thermal and hydrodynamic capabilities of flat micro heat pipes

被引：21

作者：

Revellin, Remi ^{[1
]}

Rulliere, Romuald ^{[1
]}

Lefevre, Frederic ^{[1
]}

Bonjour, Jocelyn ^{[1
]}

机构：

[1] Univ Lyon 1, INSA Lyon, INSA, CNRS,Ctr Therm Lyon,UMR5008, F-69621 Villeurbanne, France

来源：

APPLIED THERMAL ENGINEERING | 2009年 / 29卷 / 5-6期

关键词：

Two-phase heat spreader; Micro heat pipe; Meniscus curvature; Micro-grooves; Analytical model; WICK STRUCTURE; SPREADERS;

D O I：

10.1016/j.applthermaleng.2008.06.002

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

An analytical model by Lefevre and Lallemand [F. Lefevre, M. Lallemand, Coupled thermal and hydrodynamic models of flat micro heat pipes for the cooling of multiple electronic components, Int. J. Heat Mass Transfer 49 (2006) 1375-1383] that couples a 2D hydrodynamic model for both the liquid and the vapor phases inside a flat micro heat pipe (FMHP) and a 3D thermal model of heat conduction inside the FMHP wall has been modified. It consists of superposing two independent solutions in order to take into account the impact of evaporation or condensation on the equivalent thermal conductivity of the capillary structure. The temperature, pressure and velocity fields can be determined using Fourier solutions. The model has been experimentally validated based on literature data from a grooved FMHP. Two new correlations for the equivalent thermal conductivities during evaporation and condensation inside rectangular micro-grooves have been proposed based on a numerical database. The influence of the saturation temperature and geometry on the maximum heat flux transferred by the system is presented. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1114 / 1122

页数：9

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