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太阳能接收器中
高温热管等温及导热性能的试验研究
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丁莉,张红,许辉,白穜,刘亚雷,庄骏
南京工业大学能源学院,江苏南京 210009
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[摘要] 高温热管是通过内部碱金属工质相变换热实现传热的高效传热元件。对用于碟式热发
电系统太阳能接收器中高温热管进行分析,设计了具有“V”型沟槽与金属纤维毡组合
的复合吸液芯高温热管,对复合吸液芯钠热管进行了不同输入功率、不同倾角下等温性
能及导热性能试验测试。结果表明,与全周加热相比半周加热高温热管轴向温差、周向
温差都较高,当量导热系数较低;热管半周加热 0~90°倾角放置均可稳定运行,等温性
能、导热性能良好,角度变化对热管等温性能影响较小。
[关键词] 高温热管;碟式热发电系统;太阳能接收器;全周受热;半周受热;等温性能;导热系数
[中图分类号] TM615
[文献标识码] A
[文章编号] 1002 3364 (2010) 03 0040 05
[ DOI 编号] 10. 3969/ j. issn. 1002 3364. 2010. 03. 040
TEST STUDY ON ISOTHERMAL AND HEAT CONDUCTING
PERFORMANCE OF HIGH TEMPERATURE
HEAT PIPE IN SOLAR ENERGY RECEIVER
DIN G Li ,ZHNA G Hong ,XU Hui ,BA I Tong ,L IU Ya lei ,ZHUAN G J un
College of Energy ,Nanjing Polytechnical University ,Nanjing 210009 ,Jiangsu Province ,PRC
Abstract : The high temperat ure heat pipe is a highly effective heat transfer element t hrough heat ex
change due to p hase change of t he working medium , namely internal alkaline metal. A high tempera
ture heat pipe used in solar energy receiver of dish type t hermal power generating system has been an
alysed ,and a high termperat ure heat pipe wit posite wick being designed. The struct ure
posite wick is made up of V shaped grooves covered wit h metal fibre felt s. The isot hermal and heat
conducting performance of a sodium heat