| 摘要 |
Provided is a waste heat recovery turbine system capable of lowering the temperature of hot water returned to a heat source and of suppressing a steaming phenomenon in a preheater without changing the flow rate of a heating medium flowing through an evaporator. The waste heat recovery turbine system comprises a turbine 4 driven by a working medium M, an evaporator 10 which evaporates the working medium M by heat exchange with a heating medium H supplied from a first heat source 20a and supplies the evaporated working medium M to the turbine 4, a preheater 12 for preheating the working medium M flowing into the evaporator 10, a preheating passage 22b through which the heating medium H is supplied from the evaporator 10 to the preheater 12, a return passage 22d which branches from a location of the preheating passage 22b and serves to return the heating medium H to a second heat source 20b, and a flow control valve 24 for controlling a flow rate of the heating medium H supplied to the preheater 12 by causing the heating medium H which has radiated heat in the evaporator 10 to flow through the return passage 22d.
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