A study on optimum insulation thickness of building walls in hot summer and warm winter zone in China.

ABSTRACT: As the proportion of building energy consumption gradually increases, adding insulation materials to the existing building envelope has become an important method to improve building thermal performance. Currently, most research on the optimum thickness of insulation layers is calculated from the perspective of heat transfer. However, in humid and hot areas, the influence of humidity and solar radiation should not be ignored. Therefore, this study used the coupled heat and moisture transfer model to calculate the yearly cooling and heating transmission loads. Three kinds of materials: expanded polystyrene, polyurethane and extruded polystyrene were compared in thickness ranging from 10 to 90 mm. The P₁-P₂ economic model consisting of lifecycle energy P₁ and

SUBMITTER: Xu C 

PROVIDER: S-EPMC11937593 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature