A refrigeration apparatus of a two-stage compression type for compressing a refrigerant to a supercritical region, the refrigeration apparatus comprising: a lower stage-side compression unit (22, 23); a higher stage-side compression unit; an intermediate cooler configured to cool the refrigerant discharged from the lower stage-side compression unit (22, 23) and to supply the refrigerant thus cooled to the higher stage-side compression unit; a heat source-side heat exchanger; and a utilization-side heat exchanger; wherein the refrigeration apparatus further comprises: an economizer circuit configured to decompress and evaporate a part of the refrigerant flowed out of the heat source-side heat exchanger or utilization-side heat exchanger functioning as a radiator and to supply the refrigerant thus decompressed and evaporated to the higher stage-side compression unit; and a control unit configured to control a cooling capacity of the intermediate cooler and a refrigerant flow rate of the economizer circuit, wherein during a first operation in which the heat source-side heat exchanger functions as a radiator and the utilization-side heat exchanger functions as an evaporator, in a case where a discharge temperature (Td) which is a temperature of the refrigerant discharged from the higher stage-side compression unit is more than a first temperature, the control unit increases the cooling capacity of the intermediate cooler without increasing the refrigerant flow rate of the economizer circuit on condition that the intermediate cooler does not reach a maximum cooling capacity. a lower stage-side compression unit (22, 23); a higher stage-side compression unit; an intermediate cooler configured to cool the refrigerant discharged from the lower stage-side compression unit (22, 23) and to supply the refrigerant thus cooled to the higher stage-side compression unit; a heat source-side heat exchanger; and a utilization-side heat exchanger; wherein the refrigeration apparatus further comprises: an economizer circuit configured to decompress and evaporate a part of the refrigerant flowed out of the heat source-side heat exchanger or utilization-side heat exchanger functioning as a radiator and to supply the refrigerant thus decompressed and evaporated to the higher stage-side compression unit; and a control unit configured to control a cooling capacity of the intermediate cooler and a refrigerant flow rate of the economizer circuit, wherein during a first operation in which the heat source-side heat exchanger functions as a radiator and the utilization-side heat exchanger functions as an evaporator, in a case where a discharge temperature (Td) which is a temperature of the refrigerant discharged from the higher stage-side compression unit is more than a first temperature, the control unit increases the cooling capacity of the intermediate cooler without increasing the refrigerant flow rate of the economizer circuit on condition that the intermediate cooler does not reach a maximum cooling capacity. an economizer circuit configured to decompress and evaporate a part of the refrigerant flowed out of the heat source-side heat exchanger or utilization-side heat exchanger functioning as a radiator and to supply the refrigerant thus decompressed and evaporated to the higher stage-side compression unit; and a control unit configured to control a cooling capacity of the intermediate cooler and a refrigerant flow rate of the economizer circuit, wherein during a first operation in which the heat source-side heat exchanger functions as a radiator and the utilization-side heat exchanger functions as an evaporator, in a case where a discharge temperature (Td) which is a temperature of the refrigerant discharged from the higher stage-side compression unit is more than a first temperature, the control unit increases the cooling capacity of the intermediate cooler without increasing the refrigerant flow rate of the economizer circuit on condition that the intermediate cooler does not reach a maximum cooling capacity.