| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power generation plant capable of improving utilization efficiency of geothermal energy and increasing a power generation amount.SOLUTION: In an embodiment, hot water separated by a gas-liquid separation unit is supplied to a supercritical pressure gas heating unit as a heating medium, and a low-boiling-point medium heated in a pseudo critical temperature heating unit is supplied to the supercritical pressure gas heating unit. After heat exchange between the heating medium and the low-boiling-point medium, the low-boiling-point medium is supplied to a medium turbine as supercritical pressure gas. Steam discharged from a steam turbine is supplied to the pseudo critical temperature heating unit as a heating medium, and a low-boiling-point medium heated in a supercritical pressure liquid heating unit is supplied to the pseudo critical temperature heating unit. By heat exchange between the heating medium and the low-boiling-point medium, the heating medium is condensed and then supplied to the supercritical pressure liquid heating unit, the supercritical pressure liquid heating unit heats the low-boiling-point medium so that a temperature of the low-boiling-point medium is in a predetermined temperature range including a pseudo critical temperature, and the resultant low-boiling-point medium is then supplied to the supercritical pressure gas heating unit.</p> |
