一种开孔被动式太阳能集热器热效率的研究  

Study on heating efficiency of a porous and passive solar collector

作　　者：闫敏[1] 邱林[1] 任耿[1] 黄莉[1] 邹越[1] 

机构地区：[1]北京建筑工程学院,北京100044

出　　处：《节能》2009年第9期12-14,共3页Energy Conservation

基　　金：北京市教委科技计划项目(项目编号:KM200810016007);建设部科学技术项目(项目编号:2008-K6-21)

摘　　要：对一种具有多孔折线型的被动式太阳能集热器的热性能进行实验研究,探讨在受迫条件下集热器热效率的计算公式。实测过渡季集热器出口温度、进口风速和太阳辐射强度3个参数。通过实验分析,这种折线型太阳能集热器的热效率可达59.4%,并且热效率随进口风速和太阳辐射强度的增加而提高。此外,集热器效率要先于太阳辐射强度达到当天最大值。studied thermal property of a passive solar collector with porous and line-broken,discussed the thermal efficiency formula in forced convection.In transition season,measure outlet temperature and inlet wind velocity of collector,solar irradiance.Analyzed and compared the reason of the thermal efficiency of collector with the change in these three factors.The experiment comes to the thermal efficiency of this line-typed solar collector reached 59.4%,and it rose as the increased of inlet wind velocity and solar irradiance.The thermal efficiency of solar collector reachs the maximum of the day before the solar irradiance.

关 键 词：被动式太阳能 多孔折线型 热效率 

分 类 号：TK513.5[动力工程及工程热物理—热能工程]