摘要
对带遮热板的真空管型集热器进行理论分析和实验研究,通过与不带遮热板的真空管型集热器传热过程进行对比分析,计算表明带遮热板的真空管型集热器的辐射热损降低约22.7%。对两种集热器的中温性能进行对比实验,结果表明:带遮热板的真空管型集热器的中温热性能更加优越,在129℃高温工况时,其热效率为55%。
The thermal performance of evacuated tube solar collector with heat shield was determined by theory analysis and comparative test. The comparative theoretical analysis has been done on the heat transfer procedure of the solar collector with and without heat shield. The calculation results showed that the radiation heat loss from the evacuated tube solar collector with heat shield was lower 22.7% than that without heat shield. The comparative test on the medium temperature thermal performance to the solar collector with and without heat shield has been done, the test results implied that the solar collector with heat shield has a better thermal performance at medium temperature situation, and the collection efficiency is 55% at the inlet temperature 129 ℃.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2016年第1期116-121,共6页
Acta Energiae Solaris Sinica
关键词
热管式真空管集热器
遮热板
辐射热损
集热器热效率
heat pipe evacuated tube solar collector
heat shield
radiation heat loss
solar collector efficiency
