Refrigeration system

Abstract

A refrigeration system that can improve energy efficiency is provided. [Solution] The refrigeration system 1 comprises a refrigeration circuit 2 provided with a plurality of compressors, a heat source side heat exchanger, a plurality of user side heat exchangers, and a gas-liquid separator 16 that separates the refrigerant cooled by at least one of the plurality of user side heat exchangers into liquid refrigerant and gas refrigerant, the plurality of compressors consisting of a low-stage compressor 11 and a high-stage compressor 12, the plurality of user side heat exchangers consisting of a first user side heat exchanger and a second user side heat exchanger having a lower refrigerant evaporation temperature than the first user side heat exchanger, and the high-stage compressor 12 is provided with a high-stage injection port 19 that supplies refrigerant to the compression mechanism of the high-stage compressor 12 via a route different from the suction section that draws in the refrigerant.

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