Influence of thermal properties on inner surface temperature and indoor thermal comfort in dry-hot and dry-cold zone

 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.