| 摘要 |
PROBLEM TO BE SOLVED: To provide a geothermal heat exchanger which has high thermal efficiency.SOLUTION: A geothermal power generation system 100 having a falling area for making a heat exchange liquid fall and a rising area for making a heat exchange liquid rise, includes: a first geothermal power generation facility 10 including a geothermal well for a heat exchange liquid which has a double pipe with no opening in a geothermal field, a high pressure circulation pump which sends the heat exchange liquid to the geothermal well for a heat exchange liquid, and a power generation facility for a heat exchange liquid which takes out steam from the heat exchange liquid heated by geothermal heat to generate electricity; and a second geothermal power generation facility 50 including a production well which receives geothermal water, an injection well which returns at least a part of the geothermal water whose heat exchange has been finished, and a power generation facility for geothermal water which includes at least one gas-water separator and takes out steam from the geothermal water to generate electricity. At least a part of the heat exchange liquid is sent to the geothermal well for a heat exchange liquid by the high pressure circulation pump in the state that its heat has been exchanged and it has been heated by hot water separated by the gas-water separator.SELECTED DRAWING: Figure 3 |
