RANKINE CYCLE DEVICE, COGENERATION SYSTEM, AND RANKINE CYCLE DEVICE OPERATION METHOD

摘要

This Rankine cycle device (20A) is provided with a pump (23), an evaporator (24), an expander (21), a condenser (22) and an internal heat exchanger (25). The internal heat exchanger (25) exchanges heat between a working fluid discharged from the expander (21) and a working fluid discharged from the pump (23). The temperature of the working fluid at the entrance of the expander (21) is set such that the temperature of the working fluid at the outlet of the expander (21) is higher than the saturation temperature on the high pressure side of the cycle.