Recovery system using fluid coupling on power generating system

Abstract

A power generating system can recover exhaust heat from a working fluid of a fluid coupling and utilize the recovered exhaust heat to generate power. In the power generating system, water is supplied to a boiler by a feed pump to generate steam, a steam turbine is driven by using the generated steam to generate power, the steam discharged from the steam turbine is condensed in a condenser, and then the condensed water is resupplied to the boiler by the feed pump. The power generating system includes a fluid coupling provided between the feed pump and a motor to transmit a torque from the motor to the feed pump by a working fluid, and the condensed water supplied from the condenser is heated by the working fluid discharged from the fluid coupling.

1 . A power generating system comprising:
 a fluid coupling provided between a driving machine and a driven machine for transmitting a torque from the driving machine to the driven machine by a working oil which fills an impeller chamber of said fluid coupling;   wherein the working oil has a temperature of 70° C. to 90° C., is discharged from said fluid coupling and is supplied to a vapor generator, a refrigerant in said vapor generator is heated by the working oil and is evaporated to form a refrigerant vapor, a turbine is driven by using the refrigerant vapor to generate power, the refrigerant vapor is discharged from said turbine and is introduced into a refrigerant condenser where the refrigerant vapor is cooled by a cooling medium and condensed to form a refrigerant liquid, and the refrigerant liquid is resupplied to said vapor generator.   
     
     
         2 . The power generating system according to  claim 1 , wherein said refrigerant comprises dichlorotrifluoroethane (HCFC123) or trifluoroethanol (CF 3 CH 2 OH).