阳台壁挂式太阳热水器的热性能分析

通过对在昆明地区搭建的一种间接式强制循环分体承压阳台壁挂式平板型太阳热水器的分析，建立了热水器系统的数学模型，并对冬季晴天天气情况下的得热量、平均日效率、瞬时效率、贮热水箱热损系数、系统平均热损因数等热水器热性能参数进行了多天测试和分析。结果表明，这种太阳热水器的热性能良好，符合家庭生活用水的要求，适合与建筑进行一体化设计；太阳辐照量是影响太阳热水器热性能最显著的因素；分体承压立式贮热水箱的保温性能良好，但还需继续对这种贮热水箱的温度分层情况作进一步研究。

Thermal performance of solar water heater hanged on balcony wall with separate pressure bearing

In this paper, an analysis has been conducted on an indirect forced circulation solar water heater which is hanged on the balcony wall with separate pressure bearing, a mathematical model was established for this heater, and experiments and calculations have been carried out to obtain the useful heat, daily average thermal efficiency, transient thermal efficiency, heat loss coefficient of the heater, etc., under clear day conditions in winter in Kunming, China. The results show that the thermal performance of such a solar heater is superior, it meets the requirements of the national standards and the residential water usage, and is suitable for utilization integrated with buildings; Solar radiation is the most profound parameter to dictate the thermal performance of the heater; The insulation performance of the storage tank with separate pressure bearing is superior. Nevertheless, the results also demonstrate that further studies are needed to explore in-depth the temperature stratification in the heat storage tank.