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US 8,769,951 B2Granted
Geothermal power-generation system
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsHiromi Nakatani, Jin Kato
Life of this patent
Estimating the term…
Abstract
[Problem to be solved] To achieve a reduction in facility costs in a geothermal power-generation system. [Solution] 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.
Claims5
A geothermal power-generation system comprising:
- a compressor that compresses air;
- an air supply pipe embedded in a ground to a predetermined depth from a surface of the ground;
- a heat exchange unit that is connected to a distal end of the air supply pipe and performs heat exchange between air and geothermal heat;
- an air discharge pipe that is connected to the heat exchange unit and embedded in the ground from the surface of the ground;
- a turbine that obtains a rotational force by heated compressed air heat exchanged by the heat exchange unit;
- and
- a generator that generates power by a rotational force inputted from the turbine, wherein the heat exchange unit includes a columnar main body and a plurality of partition walls for defining a plurality of fine pores within the columnar main body,
- wherein the heat exchange unit includes a first heat exchange unit that is connected to a lower end of the air supply pipe and a second heat exchange unit that is connected to a lower end of the air discharge pipe, and the lower end of the first heat exchange unit is connected to the lower end of the second heat exchange unit by a U-shaped connecting piping.
5 more elements
Dependencies are inferred from the claim text.