期刊
APPLIED THERMAL ENGINEERING
卷 93, 期 -, 页码 139-146出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2015.09.038
关键词
Flat heat pipe; Thermal performance; Wick structure; Electronics cooling
资金
- National Natural Science Foundation of China [51176202]
The thermal performance of a copper-water flat heat pipe (100 mm x 50 mm x 2 mm) composed of a novel wick structure with an inner thickness for working fluid less than 1 mm has been investigated. The wick structure was made of sintered hybrid copper fine powder with diameters ranging from 50 mu m to 100 mu m. The effects of heating input, tilt angle, and cooling temperature on flat heat pipe working performance were studied experimentally. Results showed that the proposed flat heat pipe could effectively dissipate 120 W (100 W/cm(2)) in the horizontal orientation with a thermal resistance of 0.196 degrees C/W. Moreover, it has been demonstrated that under air natural convection condition, the performances of the novel flat heat pipe were higher than those of thin copper sheet, showing an effective thermal conductivity more than 4 times of copper. (C) 2015 Elsevier Ltd. All rights reserved.
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