The total cooling load of the air-conditioning design of this project is 9,400kW, the total heat load is 6,890kW; the cooling source adopts 3 centrifugal chillers with a cooling capacity of 2,814kW/set (800 cold tons) and a cooling capacity of 1,055kW/set (300 cold tons). The screw type chiller adopts three plate heat exchangers for the heat source. The heat exchange capacity of a single unit is 3,200kW, and the total heat exchange capacity is 9,600kW. The floor heating source uses a heat exchanger with a heat exchange capacity of 350 kW.