The central air conditioning system consists of a cold and heat source system and an air conditioning system. The refrigeration system provides the required cooling capacity for the air conditioning system to offset the cooling load of the indoor environment; the heating system provides the air conditioning system with heat to offset the thermal load of the indoor environment. The refrigeration system is a vital part of the central air conditioning system. Its type, operation mode and structural form directly affect the economy, efficiency and rationality of the central air conditioning system.
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