Regulations for the adoption of heat recovery chillers in refrigeration stations

Regulations for the adoption of heat recovery chillers in refrigeration stations

1. For buildings that require both cooling and heating, heat recovery chillers can be selected when the technical and economic analysis is reasonable. By recovering the heat lost by the cooling water, the unit is used for air conditioning hot water or hot air preheating, industrial and domestic hot water heating, etc. The capacity and running time are used to reduce the heat source capacity.

　　2. Matters needing attention in design:

　　1) The heat recovery capacity of the heat recovery chiller is theoretically the sum of the cooling capacity of the chiller and the work done by the compressor. The heat recovery capacity decreases as the cooling capacity of the chiller decreases. To reduce the cooling tower's partial load

2) Since the main task of the heat recovery chiller is refrigeration, the heat supply through heat recovery is only a by-product in the cooling process. Excessive hot water temperature will affect the cooling efficiency of the chiller, and even cause the chiller to run unstable. Generally, it should be passed The auxiliary heat source further increases the temperature of hot water or hot air.

　　3) It is advisable to control the heat by controlling the return temperature of the hot water.