空冷型PV/T集热器通道结构优化分析

Optimization analysis of air-cooled PV/T collector channel structure

文章利用CFD技术对空冷型PV/T集热器进行数值模拟,并根据模拟结果分析了渐扩、渐缩通道和空气质量流量对该集热器综合效率的影响。文章基于上述分析结果对原有的渐扩、渐缩通道的几何尺寸进行改变,并在原有边界条件的基础上进行数值模拟。模拟结果表明:增大渐扩通道进口与出口的面积比m,可以有效地提高该集热器的综合效率;当m发生变化时,空气质量流量对该集热器综合效率的影响有显著差异。

CFD technology was generally used to simulate the comprehensive efficiency on the air-cooled PV/T collector in order to research the effects of the enlargement and diminant for inlet and outlet,and flow rate on the efficiency of PV/T air collector.Based on the above analysis results,the geometric dimensions of the original expanding and shrinking channels are changed,and numerical simulation is carried out on the basis of the original boundary conditions.The results show that the comprehensive efficiency of the system is obviously increased by increasing the area ratio m.When m changes,the influence of air mass flow rate on the comprehensive efficiency of the collector is significantly different.