Indoor thermal stratification and heating load of air conditioning system in a shopping mall of Xi’an in winter

Measures the temperature, light intensity and passenger flow in a shopping mall of Xi’an. Simulates and calculates the winter heating load of the shopping mall with the EnergyPlus software. The results show that the thermal stratification of upper-high and lower-low is obvious, and the chimney effect is serious. Obtains the transfer coefficient of winter heating load of each floor, which could be used to correct the theoretic heating load and determine the actual heating load of each floor. Suggests the control methods of individual inducted ventilation system, variable air volume air conditioning system and heat exchangers with different row number in different seasons, so as to mitigate the temperature stratification caused by chimney effect.