水箱进出水结构对平均热损因数测试的影响

Influence of Water Inlet and Outlet Structure on Average Heat Loss Factor

平均热损因数是家用太阳能热水器热性能的重要参数,通过对不同进出水结构的家用太阳能热水器进行试验研究,试验结束时采用混水法达到温度平衡,结果表明进水口和出水口距离较远且出水口位于水箱底部时平均热损因数较低,当进水口与出水口位置较近以及出水口位于水箱侧面时平均热损因数较高。

The average heat loss factor is an important parameter for the thermal performance of domestic solar water heaters. The domestic solar water heaters with the different water inlet and outlet structures are studied. The mixing method is used to achieve temperature balance at the end of the experiment. The results show that average heat loss factor is low when the water inlet and outlet is far distance and the water out/et at the bottom of the water tank. The average heat loss factor is high when the water inlet and the water outlet location close and the water outlet is positioned on the side of the water tank.