Patent ID: 7658072

Claim:
A heat cycle system comprising: a compressor configured to compress a working gas; a turbine configured to be driven by the working gas compressed in the compressor; a first heat exchanger having a heat dissipating side; a second heat exchanger; a pump configured to be able to raise the pressure of the working gas; and a reaction water turbine, wherein the working gas is cooled by passing through the heat dissipating side of the first heat exchanger and then raised in pressure by the pump to form high-pressure working liquid after being compressed by the compressor and driving the turbine to deliver work, said high-pressure working liquid driving the reaction water turbine to deliver additional work while being expanded and evaporated to form the working gas, said working gas being heated through the first heat exchanger and through the second heat exchanger before being introduced into the compressor, the additional work being delivered from the reaction water turbine and power consumed by the pump approximately canceling each other.