重庆地区墙体蓄热特性等级划分与评价

his article investigated 203 buildings in Chongqing, and concluded the current wall constructions by analyzing the thermal properties. The heat flux decrement factor was used as a representative factor of thermal inertial. A method for calculating heat flux decrement and delay was proposed and the wall heat storage performance hierarchy was researched and come up with in Chongqing. EnergyPlus was used to simulate the indoor comfort and the annual energy consumption of the selected building with different wall grades. Results show that for whatever the public building or the residential building, the indoor thermal comfort level is declining with the wall heat storage grade rising, and the energy consumption is declining first, rising then, declining last with the wall heat storage grade rising. Taking the indoor thermal comfort and the energy consumption into consideration comprehensively, the optimal wall grade of the public building is level 2[0.2,0.3), while the residential building's are level 1, level 2 (0,0.3).