干热干冷地区围护结构热工设计对内表面温度及室内热舒适的影响
Influence of thermal properties on inner surface temperature and indoor thermal comfort in dry-hot and dry-cold zone
摘要：
为了分析干热干冷地区围护结构热工性能对室内热环境的影响，采用物理环境实测结合动态模拟方法对比分析了2组墙体的保温、蓄热性能对内表面温度的影响，并结合太阳辐射季节变化探究了太阳辐射吸收比对室内热舒适的影响。研究表明：实测结果与模拟结果吻合较好，对于干热干冷地区，提高围护结构蓄热性能能够降低夏季内表面温度，对冬季内表面温度影响不大；提高围护结构保温性能可以提升冬季内表面温度，同时引起夏季内表面温度升高，对夏季降温产生不利影响；围护结构月平均得热差值与太阳辐射月累计值显著相关，降低外表面太阳辐射吸收比有利于该地区建筑全年热环境的提升。
Abstract：
In order to analyse the thermal performance of building envelope in the dry-hot and dry-cold zone, uses the physical environment measurement combined with dynamic simulation method to compare and analyse the influence of thermal insulation and thermal storage performances of two groups of walls on the inner surface temperature, and combining with the solar radiation seasonal changes, explores the influence of solar radiation absorption ratio on the indoor thermal comfort. The results show that the measured results are compliant to the simulation results. In dry-hot and dry-cold zone, improving the thermal storage performance of envelope can reduce the inner surface temperature in summer under the same thermal resistance condition, while the inner surface temperature in winter changes little. Under the same thermal storage condition, improving the insulation performance of envelope can improve the inner surface temperature in winter, and cause the inner surface temperature to rise in summer, which will have an adverse effect on the cooling in summer. There is a significant correlation between the mean monthly heat gain difference of building envelope and the monthly cumulative solar radiation. Reducing the solar radiation absorption ratio of outer surface is beneficial to the improvement of building thermal environment in a whole year.
Keywords:building envelope, thermal design, indoor thermal environment, inner surface temperature, dry-hot and dry-cold zone, radiation absorption ratio