抄録
A power generation system using the heat source from hot spring water was proposed. The considered system consists of two cycles. These 2 cycles combined as a binary system. For the environmental safety, water is used as working fluid instead of the low boiling point organic substance. Since a low temperature heat source is used, a vacuum is maintained inside the working fluid line which enables the working fluid to evaporate even at a low temperature. Low pressure Rankine cycle using the steam table and the influence of the working fluid pressure and the turbine inlet steam quality was clarified by solving the pinch point constraint in the evaporator.
