摘要
提出了带有PV的新型Trombe墙结构,搭建了带有PV-Trombe墙的可对比热箱实验台,在PV-Trombe墙上通风口安装太阳能直流风机,并在合肥地区对其在冬季不同工况下对室内热环境的影响进行了实验研究.结果表明:带有PV-Trombe墙的测试热箱与不带该墙的对比热箱室内最大温差可达7℃,带有PV-Trombe墙测试热箱的室内最高温度基本上都在20℃以上;安装太阳能直流风机后,加快了PV-Trombe墙空气夹层和室内空气的热循环,上、下通风口的最大温差由没有安装前的13℃下降到8℃.实验所采用的光电池面积为0.72 m2,功率为100.8 WP,日平均输出功率为22.9 W.由于空气流道对光电池的冷却,光电池温度较低,日平均发电效率可达10.39%.
A novel PV-Trombe wall was proposed. The comparable hot-boxes were constructed with PV-Trombe wall whose top vent was installed with a PV powered DC-fan. The influence of the PV-Trombe wall on the test hot-box （with PV-Trombe wall） was investigated under different operation conditions at Hefei in winter. The experiment results show that the maximal indoor temperature difference between the test hot-box and the reference hot-box （without PV-Trombe wall） reaches up to 7 ℃, and that the maximal indoor temperature of test hot-box is usually above 20 ℃. With the PV powered DC-fan installed, the maximal temperature difference between the top vent and the bottom vent decreases from 13 ℃ to 8 ℃, which makes the heat release faster from the air duct into the hot-box. In addition, due to the cooling of the air in the duct, the temperature of PV cell decreases, and the daily average conversion efficiency of PV reaches 10. 39%, with a PV area of 0.72 m^2.
基金
国家自然科学基金(50408009)资助
