Thermal design method and key parameters of residential building envelopes based on human thermal adaptation demand

Based on the human thermal adaptation demand in Chinas cold zone, according to the principle of thermal equilibrium, applies the climate adaptation model of human thermal comfort to the reverse solving method of optimal thermal properties of passive building envelope thermal insulation materials using the unsteady-state algorithm. Obtains the relationship among the product of specific heat capacity and density, the thermal conductivity and the thickness of envelope thermal insulation materials with different bearing structures in Xian. Compares the natural indoor air temperature of the buildings using new type of envelope thermal insulation materials with optimal thermal properties with that of the traditional buildings. The results show that the degree hours of natural indoor air temperature in the cooling and heating seasons can be reduced by 81.5% to 92.0% and 35.0% to 71.8% respectively when adopting the envelope thermal insulation materials with optimal thermal properties.