中文摘要：

文章基于平板型集热器日均能量输出模型,建立了太阳能热水系统水箱水量与集热器面积的配比模型。以云南7城市的典型气象数据为例,利用所建模型对太阳能热水系统的水量配比进行了计算,给出了水箱终温为60℃时各城市各季节或全年使用太阳能热水系统的水量配比的取值范围。为便于工程应用,文中给出了水量配比与倾角间相关系数大于0.999的二次关系式。进一步讨论发现,云南7城市春季、夏季、秋季、冬季或全年使用的太阳能热水系统集热器的最佳倾角分别为10~15°,0~0°,32~38°,45~50°,24~30°;其对应的水量配比分别为50~60 kg/m2,44~51 kg/m2,43~56 kg/m2,44~58 kg/m2,46~52 kg/m2。针对不同的供热目的 ,可利用文中的关系式和各季节或全年的最佳倾角对太阳能热水系统进行优化设计。

英文摘要：

The model for calculating the ratio of the mass of water in the tank to the area of the solar collector（the ratio is abbreviated as Mass Area Ratio or MAR） was established based on the energy output model of the flat-plate solar collector. The Mass Area Ratios were calculated by using the typical meteorological data of seven cities in Yunnan Province. The final water temperature in the water tank is60℃ in the calculation process. The ranges of the MARs have been given for seasonal or year-round operation of the flat-plate solar water heating system. To facilitate engineering applications, the quadratic fit relationship between the MARs and the tilt angles of the solar collector have been obtained with high correlations（R2〉0.999）. Further discussions found that the optimal tilt angles and the corresponding MARs for spring, summer, autumn, winter or year-round operation of the solar water heating system are respectively in 10~15 °,0~0 °,32~38 °,45~50 °,24~30 °,50~60 kg/m2,44~51 kg/m2,43~56 kg/m2, 44~58 kg/m2 and 46~52 kg/m2. Depending on the purpose of heating, the seasonal or year-round solar hot water systems can be optimized and designed by using the relationships and the optimal tilt angles in the paper.