摘要
对一种蛇形流道太阳能平板空气集热器的集热性能进行研究,揭示流道转弯数N与蛇形流道集热器集热性能之间的关系,得到集热器流道转弯数的推荐值。指出大转弯数蛇形流道空气集热器FR值可近似用N=1时的FR值进行替代研究,当N>5时,集热器热迁移因子FR与N=1误差不超过5%。通过理论研究,获得带金属隔板蛇形流道集热器热迁移因子FR的理论表达式,并对集热器进行优化,使集热器热迁移因子FR提高到0.81。
A flat plate solar air collector with serpentine flow passages was studied. The relationships between the efficiency factor, the heat-removal factor of the solar air collector and the turning numbers, and found the recom- mended values. The article also pointed out that the heat removal factor FR of large turning number air collector can be instead by N = 1 approximately. When N 〉 5, the error of collector heat removal factor FR are less than 5%, compared with N = 1. The theoretical formula of the collector＇s thermal efficiency is obtained, which can be used for design and application of such kind of collectors.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第9期1560-1564,共5页
Acta Energiae Solaris Sinica
基金
"十一五"国家科技支撑计划(2008BAJ12B01)
关键词
空气集热器
效率因子
热迁移因子
蛇形流道
solar air collector
efficiency factor
heat-removal factor
serpentine flow passages
