WASTE HEAT RECOVERY DEVICE, AND METHOD FOR CONTROLLING SAME

The disclosure intends to provide an waste heat recovery system and a method of controlling the same that can detect leakage of a refrigerant relatively quickly even when the refrigerant leaks out of a refrigerant circuit. The waste heat recovery system (1) includes: a refrigerant circuit (10) having a condenser (14) configured to condense, by heat exchange with cooling water, a refrigerant that passed through a turbine (13) rotated by the refrigerant evaporated by an evaporator (12); a cooling water pipe (52) through which the cooling water that passed through the condenser (14) flows; and a leakage detector (30) provided to the cooling water pipe (52) and configured to detect the refrigerant contained in the cooling water flowing through the cooling water pipe (52).