翅片式热管真空集热管的热损性能研究  

STUDY ON THE HEAT-LOSS OF THE HEAT PIPE VACUUM TUBE

作　　者：张海莹[1] 郑宏飞[1] 熊建银[1] 葛洪川 

机构地区：[1]北京理工大学机械与车辆工程学院,北京100081 [2]北京金阳科创太阳能技术有限公司,北京100083

出　　处：《太阳能学报》2014年第5期773-778,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51076016);国家自然科学基金青年基金(51106011)

摘　　要：提出通过对翅片背面进行粗糙处理来防止翅片式热管真空集热管高温过热的方法,建立真空集热管的一维传热模型,介绍在室温稳态条件下测试其热性能的实验台及热平衡测试方法,测试在不同加热功率和翅片背面不同粗糙度条件下的平衡温度,获得不同平衡温度条件下的热损失率。实验结果表明,增加翅片背面的粗糙度可增大热辐射,从而增加集热管的热损失,对解决夏季高原地区集热器过热问题有意义。To the finned heat pipe vacuum tube, this paper puts iorward the method to prevent high temperature overheating through roughing the back of the fin, establishes a one-dimensional heat transfer model of the vacuum tube, introduces the experimental setup and heat balance test method in the steady-state condition at room temperature, tests the balance temperatures under different heating powers, and different fin back roug hnesses and obtains the heat-losses under different balance temperatures. The experimental results showed that increasing the roughness on the back of the fin can increase thermal radiation, thus increasing the heat loss of the vacuum tube. It＇ s meaningful to solve overheat problem of the collectors in the summer of plateau area.

关 键 词：热管 真空集热管 热损性能 粗糙度 

分 类 号：TK513.3[动力工程及工程热物理—热能工程]