The image to the left describes the process, to provide a compressor (11) that compresses air, a heating device (14) that heats compressed air compressed by the compressor (11) by geothermal heat, a turbine (12) that obtains a rotational force by heated compressed air heated by the heating device (14), and a generator (13) that generates power by the rotational force inputted from the turbine (12).
According to the apparatuses described in the patent literatures, a sealed piping in which a water intake pipe is placed so as to surround a water supply pipe is provided in the ground, water supplied through the water supply pipe is heated by geothermal heat at a lower heat exchange unit, the heated fluid is taken out to the ground through the water intake pipe, and vapor is separated therefrom by a vapor-water separator to drive and rotate a turbine.
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