摘要
针对目前太阳能空气集热器普遍温度不高的情况,设计了一种新型的中高温太阳能空气集热器,采用复合抛物面聚光集热器(CPC)作为聚热部件,采用真空集热管作为集热部件,空气加热部分则由真空集热管和U型管之间热传递配合完成,真空集热管和U型管之间采用新型导热材料——石墨与甘油混合物作为传热介质,该集热器的多级串联可获得200℃以上的高温空气;为了评估该集热器的性能,对该集热器关键部分的传热特性进行分析,并对多级情况下的集热器的中高温性能进行初步实验研究。
Becanse most of solar air collectors can only provide low temperature air at present, a new type of solar air collector with medium-high temperature air was put forward. It is composed of three parts： a compound parabolic concentrating （CPC） collector is used to focus sunlight; an evacuated solar collector tube is used to col- lect heat; a U-type tube, which adopts heat from the envelope, is used to increase air temperature. Between the tube and the envelope, the composition of graphite and glycerin is adopted as the heat transfer medium. With multi- ple serial of the apparatuses, the temperature of the heated air can reach over 200℃. The heat transfer perform- ances of key parts of solar air collector were analyzed. Furthermore, the elementary experiment performance was de- scribed.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第10期1783-1788,共6页
Acta Energiae Solaris Sinica
基金
江苏省科技成果转化专项资金(BA2009086)
江苏省自然科学基金重点项目(BK2010030)
