被动式太阳能温室平均热损系数的测试与分析

Test and Analysis on Average Heat Loss Coefficient of Passive Solar Greenhouse

采用相似性原理,将具有热水调温性能的被动式太阳能温室系统视为平板集热器,采用类似的方法,分析了温室的热量平衡、热损失、平均热损系数,针对实验温室进行了温室平均热损系数的测试和计算,结果表明采用立体面接收太阳入射光的被动式太阳能热水器,具有热效率高、散热快的特点,可使温室内白天的高温推迟2～3 h,室内气温最高降低2～3℃,夜间增温3～7℃。

Using the similar principle,a passive solar greenhouse with hot water system to adjust the warm performance is regarded as the plate collector.By using the similar method,the greenhouse heat balance,heat loss and average heat loss coefficient were analyzed.In view of a greenhouse,the average heat loss coefficient was tested and calculated.The results showed that the passive solar greenhouse has characteristics of high heat efficiency and rapid heat radiation,which can delay 2-3 h high temperature in daytime,reduce 2-3 ℃ in greenhouse,increase 3-7 ℃ in night.