太阳能接收器中高温热管等温及导热性能的试验研究
, PP. 40-44
Keywords: 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
Abstract:
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。
References
[1] | grovergm,cottertp,eriksongf.structureofveryhighthermalconductance[j].journalappliedphysicals,1964,35(6):1990-1991.[2]dradkins,ceandraka,jbmoreno.heatpipesolarreceiverdevelopmentactivitiesatsandianationallaboratories[r].nm87185,albuquerque,sandianationallaboratories,2004.[3]dlaing,ctrabing.secondgenerationsodiumheatpipereceiverforausabv-160stirlingengine:evaluationofon-suntestresultsusingtheproposedieaguidelinesandanalysisofheatpipedamage[j].journalofsolarenergyengineering,1997,119(11):279-285.[4]张红,许辉,白�.高温太阳能热管接收器[p].中国专利:200710191145.4,2007-12-10.[5]xiaohuang,georgefranchi.designandfabricationofhybridbi-modalwickstructureforheatpipeapplication[j].journalofporousmaterials,2008,15(6):635-642.[6]赵蔚琳,庄骏,张红.钠热管的性能试验研究[j].化工装备技术,2004,25(1):25-27.[7]庄骏,张红.热管技术及其工程应用[m].北京:化学工业出版社,2000.[8]刘志华,董文才,夏飞.v型沟槽尖峰形状对减阻效果及流场特性影响的数值分析[j].水动力学研究与进展,2006,21(3):223-231.[9]mahanlon,hbma.evaporationheattransferinsinteredporousmedia[j].journalofheattransfer,2003,125(8):644-652.[10]dkhrustalev,afaghri.fluidfloweffectsinevaporationfromliquid-vapormeniscus[j].journalofheattransfer,1996,118(8):725-730.
|
Full-Text