Peculiarities of heat transfer in a flat disk-shaped evaporator of a loop heat pipe

被引：12

作者：

Chernysheva, M. A. ^{[1
]}

Maydanik, Yu. F. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Thermal Phys, Ural Branch, Ekaterinburg 620016, Russia

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2016年 / 92卷

关键词：

Loop heat pipe; Evaporator; Porous material; Heat-and-mass transfer; Evaporation;

D O I：

10.1016/j.ijheatmasstransfer.2015.08.108

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Two models of a flat disk-shaped evaporator of a loop heat pipe have been developed for analyzing the effect of the convective component on heat transfer in a wick, and also on heat-exchange processes in an evaporation zone. Simulation data were obtained for two evaporators. The first evaporator was made entirely of copper, and the second had a body of stainless steel and a nickel wick. The geometrical dimensions of the evaporators were equal. The diameter of the heating zone was 30 mm. Calculations were made for heat fluxes from 2.8. 10(4) to 4.2. 10(5) W/m(2). Water was used as a working fluid. An analysis of the results has shown that the contribution of the convective component to the overall heat transfer is small. The higher the thermal conductivity of the wick, the smaller the effect that the convection has on the temperature distribution in the evaporator. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1026 / 1033

页数：8

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