A Study of Biporous Wicks for Loop Heat Pipe
Date Issued
2007
Date
2007
Author(s)
Wang, Yang-Hsin
DOI
zh-TW
Abstract
The purpose of this study was to investigate the effects of various pore size
distributions of biporous wicks for a Loop heat pipe (LHP). The study was conducted
following a statistical method using a two-level factorial plan involving three variables
(particle size of pore former：48~62μm and 74~88μm Na2CO3, pore former content：
20vol% and 25vol%). Finally, a comparison was made between monoporous wicks and
biporous wicks for the heat transport capability of the LHP.
Experimental results showed that the better parameters of the biporous wick seem
to tend to more pore former contents (25vol%), and smaller particle size of pore former
(48~62μm), in particular pore former content (percent contribution B＝80%). At the
sink 10 ℃ and the allowable evaporator temperature 85℃, the heat transfer capacity of
the better biporous wick achieved 350W and the thermal resistance was 0.19 /W ℃ . In
comparison to a monoporous wick for 300W and 0.23 /W, the performance is ℃
enhanced. LHPs with biporous wicks are very attractive for high heat flux applications
in the future.
Subjects
孔徑分佈
雙孔徑毛細結構
迴路
式熱管
單孔徑毛細結構
熱傳性能
pore size distribution
biporous wick
Loop heat pipe
monoporous wick
heat transport capability
Type
thesis
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