MULTI-PRESSURE RADIAL TURBINE SYSTEM

摘要

A multi-pressure radial turbine system that can increase the efficiency and reduce the cost of a binary power generating system or the like using a Rankine-cycle is provided. A high-pressure pump (21H) and a low-pressure pump (21L) for pressurizing liquid-phase heating media introduced therein to different pressures; a high-pressure evaporator (23H) and a low-pressure evaporator (23L) for vaporizing the liquid-phase heating media delivered from the high-pressure pump (21H) and the low-pressure pump (21L) by absorbing heat from a high-temperature heat source; one multi-pressure radial turbine (25) that expands the gaseous heating media having different pressures and temperatures, supplied from the high-pressure evaporator (23H) and the low-pressure evaporator (23L), to obtain output power; and a condenser (27) for condensing the gaseous heating medium expanded in the multi-pressure radial turbine (25) by making the medium release heat to a low-pressure heat source are provided to form a cycle circuit (C) through which the heating medium circulates while repeatedly changing its state between vapor and liquid.