| 摘要 |
PURPOSE:To improve the heat efficiency and reduce the wetness at the outlet side of a steam turbine, by overheating a high-pressure saturated steam and a hot water to be discharged from a steam separator, so as to convert the same to an overheated steam, and feeding the overheated steam to the steam turbine. CONSTITUTION:A geothermal two-phase flow blown out from the underground is inducted to a steam separator 10, and is separated into a hot water and a high-pressure saturated steam. Then, the high-pressure saturated steam is fed to an overheated high-pressure steam generator in a boiler 24, and is converted to an overheated high-pressure steam. On the other hand, the hot water is fed to an overheated low-pressure steam generator in the boiler 24 by a pump 26, and is converted to an overheated low-pressure steam. Both the overheated high-pressure steam and the overheated low-pressure steam are fed to a steam turbine 14 to drive a generator 18. Accordingly, the steam temperature at the inlet side of the steam turbine 14 is increased, thereby improving the heat efficiency. At the same time, as the steam having a reduced wetness is discharged from the outlet side of the steam turbine 14, a turbine blade may be prevented from being eroded or corroded.
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