家用太阳热水器热性能试验方法及标准探讨  

COMMENT ON THE CHINESE NATIONAL TESTING STANDARD OF DOMESTIC SOLAR WATER HEATER

作　　者：王志峰[1] 王德芳[2] 

机构地区：[1]中国科学院工程热物理研究所,北京100080 [2]甘肃省科学院自然能源研究所,兰州730000

出　　处：《太阳能学报》2000年第3期248-252,共5页Acta Energiae Solaris Sinica

摘　　要：对家用太阳热水器热性能的评价方法进行了分析。国标中采用“平均日效率”反映热水器的热性能有一定局限性 ,“平均热损系数”定义的物理含义不清晰 ,数学表达式的推导也值得商榷。国标中提出的测定水箱平均水温的方法对不同种类的热水器及不同种类的水箱会带来不易控制的误差。Comments on the test method for rating thermal performance of a domestic solar water heater in National Standard GB/T 12915 91 are given in this paper.It is indicated that the test method based on typical daily average thermal efficiency of a solar water heater could not give its actualy yearly performance prediction.Besides,the calculation of average heat loss coefficient as well as the measurement of average water temperature in the water tanke still leave some questions to be further examined.

关 键 词：太阳能 热水器 热性能 试验 

分 类 号：TK519[动力工程及工程热物理—热能工程]