摘要
对建筑物南立面竖置和东西轴向横置的圆柱吸热体真空管集热器的日、年能量收益,以及上述两种集热器管中心距与能量收益的关系进行了分析研究。结果表明:夏季南立面横置集热器比竖置集热器的日能量收益明显要高。南立面竖置集热器管中心距等于2.0D时,横置集热器在管中心距等于2.5D时,可分别得到管中心距为5.0D时年能量收益的90%和92%。
According to the Clear-Day Model,the daily energy gain and its annual variation for different center-to-center distances of evacuated collector with cylindrical absorber in two different axes installation on building southern facade were studied.The results show that the east-west horizontal axis installed collector gets more solar energy gain than that of the vertical axis,north-south,installed collector during the summer season.In case of the center-to-center distance of vertical axis installed collector and east-west axis horizontal installed collector are 2.0 and 2.5 times the cover diameter of the tube,respectively.The annual absorbed solar energy are 90% and 92% of that gained by the collector when the tube distance placed at 5.0 times of the cover tube diameter.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2005年第2期271-276,共6页
Acta Energiae Solaris Sinica
关键词
真空管集热器
能量收益
南立面
圆柱吸热体
evacuated collector
energy gain
building southern facade
vertical axis installed collector
