SECONDARY REFRIGERANT REFRIGERATOR SYSTEM AND SECONDARY REFRIGERANT PRESSURE ADJUSTMENT METHOD

To adjust pressure of a load-side evaporator in a load-side secondary refrigerant circuit.SOLUTION: A secondary refrigerant refrigerator system according to at least one embodiment of the present disclosure comprises: a primary refrigerant circuit through which a primary refrigerant is circulated, and in which a primary refrigerant compressor, a primary refrigerant condenser and a primary refrigerant evaporator are arranged; a load-side secondary refrigerant circuit which includes a load-side evaporator, and circulates a load-side secondary refrigerant through the load-side evaporator and the primary refrigerant evaporator; a condensation-side secondary refrigerant circuit which includes a condensation-side condenser, and circulates a condensation-side secondary refrigerant identical to the load-side secondary refrigerant through the condensation-side condenser and the primary refrigerant condenser; and a gas phase part connection channel which connects a gas phase part of the load-side secondary refrigerant circuit and a gas phase part of the condensation-side secondary refrigerant circuit together.SELECTED DRAWING: Figure 1 【課題】負荷側二次冷媒回路における負荷側蒸発器の圧力を調節する。【解決手段】本開示の少なくとも一実施形態に係る二次冷媒冷凍システムは、一次冷媒が循環し、一次冷媒圧縮機、一次冷媒凝縮器、及び一次冷媒蒸発器が配置された一次冷媒回路と、負荷側蒸発器を含み、負荷側蒸発器及び一次冷媒蒸発器に負荷側二次冷媒を循環させる負荷側二次冷媒回路と、凝縮側凝縮器を含み、凝縮側凝縮器及び一次冷媒凝縮器に負荷側二次冷媒と同じ冷媒である凝縮側二次冷媒を循環させる凝縮側二次冷媒回路と、負荷側二次冷媒回路の気相部と凝縮側二次冷媒回路の気相部とを接続する気相部接続流路と、を備える。【選択図】図１