Heat transfer characteristics of loop heat pipe with modulated composite porous wick

被引：0

作者：

Wang, Ye ^{[1
]}

Ji, Xianbing ^{[1
]}

Zheng, Xiaohuan ^{[1
]}

Xu, Jinliang ^{[1
]}

机构：

[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, Beijing Key Laboratory of Multiphase Flow and Heat Transfer, North China Electric Power University, Beijing

来源：

Huagong Xuebao/CIESC Journal | 2015年 / 66卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Heat leak; Heat transfer; Loop heat pipe; Multiscale; Wick;

D O I：

10.11949/j.issn.0438-1157.20141581

中图分类号：

学科分类号：

摘要：

In order to suffice the different needs for pore size and thermal conductivity of wick in different evaporator regions of loop heat pipe (LHP), a LHP with modulated composite porous wick is constructed and investigated experimentally. The heat transfer characteristics of LHP are tested at different heating powers, inclination angles and cooling conditions. The results show that LHP has good heat transfer performances. The lowest temperature of the evaporator wall center (Tc) is only 64℃ at 200 W. The ice cooling can significantly promote LHP heat transfer performance, reducing Tc and thermal resistance, compared with the air cooling. The lowest thermal resistance is 0.19 K·W-1. Besides, the ice cooling is helpful to improving the temperature uniformity of the evaporator wall. The effects of inclination angles on temperature and thermal resistance vary with the increase of the heating power. At low heating power, Tc of LHP with evaporator and condenser being the same altitude is lower than that with evaporator below condenser. As the heating power rises, the former becomes higher than the latter. In addition, the heat leak from evaporator to compensation chamber can be reduced by applying the modulated composite porous wick. With the increase of heating power, the effects of inclination angles on heat leak are different. ©All Right Reserved

引用

页码：2055 / 2061

页数：6

共 22 条

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