摘要
本文对FHR-CPC集热器的性能进行了理论研究,建立了光学和热学性能分析模型。采用简化通道辐射理论给出了光学性能参数n_t和n_0的分析表达式,提出了实际(截短)集热器各部件对太阳辐射吸收的计算方法,建立了集热器内部传热模型,导出了光学效率η_0的分析式。最后,考虑镜面作为一个传热环节建立了FHR-CPC集热器各部件的动态能量平衡方程。模拟和试验表明,本文建立的FHR-CPC集热器性能分析模型基本合理,能反映集热器内部的光学过程和热学过程。
In this paper,detailed theoretical study is performed for a new type solar energycollector----FHR-CPC solar collector.The analytical models of optical and thermalperformance of FHR-CPC are given.Firstly,the mathematical expressions of optical parameters ni (received reflection number) and n0 (escaped reflection number) are worked out by simplified radiation transfer through specular passages.Secondly,the proper calculation of absorbed solar radiation by each component of truncated FHR-CPC is listed.The inner collector heat transfer models are established,the correct expression of optical efficiency is derived from definition.Finally,the transient energy balance equations are conducted considering the mirror as one of heat transfer segments.Successful results (simulation and experiment) indicate that the analytical models given in this paper are reasonable and effective.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
1991年第1期75-88,共14页
Acta Energiae Solaris Sinica
