真空管式太阳热水器热性能研究(二)——瞬时效率、日平均效率的比较分析

Thermal Performance Study on Evacuated Tubular Water Heaters(Ⅱ)——Comparing and analyzing of instantaneous efficiency and daily average efficiency

利用模型计算值和实验值对真空管式太阳热水器的瞬时效率、日平均效率进行了比较分析 ,结果表明所建立的计算模型总体上是成功的 .还利用计算数据对真空管式太阳热水器与平板式太阳热水器的瞬时效率进行了比较分析 ,指出了两类热水器在非稳态效率曲线上的重要差别 .

Instantaneous efficiency and daily average efficiency of evacuated tubular solar heater waters are contrasted with theoretical values by model of calculation and experimental data. The results show that the model is a correct model. Instantaneous efficiency of evacuated tubular solar heater waters and flat plat solar heater waters are also contrasted with theoretical values, their important differnece on the instantaneous efficiency curve is analyzed.