高原太阳能供暖蓄热系统保温及容积设计方法

Design method of thermal insulation and volume ofplateau solar heating thermal storage systems

针对西藏高原强太阳辐射、大温差及低气压的特殊气候条件,分析了高原太阳能蓄热体的热损失特征,归纳了典型高原地区的阴天概率分布,计算了当地太阳辐射规律与建筑热负荷规律。通过模拟分析得到了太阳能供暖蓄热体的年热损失量与集热蓄热比、蓄热容积之间的函数关系,推荐给出了适宜于高原地区的保温材料及不同蓄热模式下的保温厚度,并给出了不同蓄热周期、不同供暖末端热媒温度的蓄热容积推荐值,结果可供高原太阳能供暖蓄热系统精细化设计参考。

In view of the special climatic conditions of strong solar radiation,large air temperature difference and low atmospheric pressure in the Tibetan Plateau,the heat loss characteristics of the plateau solar heating thermal storage system is analysed,the probability distribution of cloudy days in typical plateau area is summarized,and the characteristics of solar radiation and building heating load are calculated.Through the simulation analysis,the functional relationship between the annual heat loss of the thermal storage system and the ratio of heat collection and storage and the storage volume is obtained.Then the thermal insulation materials suitable for the plateau thermal storage and the thermal insulation thickness in different thermal storage modes are recommended,and the thermal storage volumes under different thermal storage periods and different heat medium temperatures of heating terminals are acquired.The results can provide references for the refined design of the plateau solar heating thermal storage system.