立面阳台式太阳能热水器的性能特性  

Performance of facade balcony type solar water heaters

作　　者：李明[1] 郑土逢[2] 季旭[1] 魏生贤[1] 

机构地区：[1]云南师范大学太阳能研究所,昆明650092 [2]云南师范大学物理与电子信息学院,昆明650092

出　　处：《农业工程学报》2011年第10期228-232,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：高等学校博士学科点专项科研基金(20095303110001);云南省科技计划资助项目(2008CA024);教育部长江学者和创新团队发展计划资助

摘　　要：以阳台平板太阳能热水器和全玻璃真空管太阳能热水器为对象,研究太阳能集热器南立面横排和竖排放置,自然循环和强制循环对系统热性能和水箱分层的影响。结果表明,对于立面阳台式全玻璃真空管太阳能热水器,集热器横排放置比竖排放置系统循环快,热效率提高12%。对于立面阳台式平板太阳能热水器,自然循环时无论是横排放置还是竖排放置,液体循环不流畅,系统热效率均小于30%;采用强制循环能有效改善循环状况,平均进出口温差稳定,系统热效率约为63%。This paper experimentally studied the thermal performances of the flat-plate solar water heater and the all-glass vacuum tube solar water heater.The effects of the placement of the collector（southern facade horizontal row and vertical row）,and the circulation type（natural circulation and forced circulation） on the system thermal performance and the tank stratification were achieved.The results showed that for the southern facade balcony-style all-glass vacuum tube solar water heaters,the water circulation was faster when the collector was placed horizontally,and the thermal efficiency increased by 12%.For the southern facade balcony flat-plate type solar water heater,when the system run under natural circulation,whether the collector was placed horizontally or vertically,liquid circulation is not smooth,and the thermal efficiency of the system was less than 30%.Forced circulation could effectively improve the circulation.The average inlet and outlet temperatures kept stable,and the system efficiency was 63% approximately when the system run under forced circulation.

关 键 词：太阳能热水器 试验 水箱 分层 阳台 热效率 

分 类 号：TK519[动力工程及工程热物理—热能工程]