Title:
GEOTHERMAL POWER GENERATION SYSTEM
Document Type and Number:
Japanese Patent JP2014202149
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a geothermal power generation system capable of being used even in a winze at a low shaft bottom temperature, a winze at a small boring depth or at a location at which it is difficult to secure cooling water, lessening the influence of surrounding hot springs and scale adhesion, reducing cost relating to medium cooling and pumping, and achieving high efficiency and space saving installation.SOLUTION: A closed loop circulation type geothermal power generation system uses a coaxial double-pipe heat exchanger 1 by constituting a helical channel between an outer tube inner wall and an inner heat insulating tube of the coaxial double-pipe heat exchanger 1 for accelerating underground heat exchange by underground heat absorption of a power generation medium and formation of condensate liquid by underground heat radiation of the power generated medium, accelerating the condensed liquid formation by heat radiation into the underground and cooling by helical flow down of the medium in low-temperature underground layers such as a shallow constant-temperature layer and a water-bearing layer, and accelerating heat absorption from the underground and heating in high-temperature underground layers such as a deep high-temperature layer and a geothermal layer, thereby facilitating raising a temperature of the medium in a bottom portion of a double tube shaft.
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Inventors:
MATSUSHIMA HIROAKI
SHIDA TAKAYUKI
KAWABATA YASUHARU
SHIDA TAKAYUKI
KAWABATA YASUHARU
Application Number:
JP2013080031A
Publication Date:
October 27, 2014
Filing Date:
April 07, 2013
Export Citation:
Assignee:
MATSUSHIMA HIROAKI
SHIDA TAKAYUKI
KAWABATA YASUHARU
SHIDA TAKAYUKI
KAWABATA YASUHARU
International Classes:
F03G4/00; E21B36/00; F24J3/08; F25B27/00; F25B30/06; F28D21/00; F28F1/40
Domestic Patent References:
| JPS49103122A | 1974-09-30 | |||
| JPS5452349A | 1979-04-24 | |||
| JP2012136946A | 2012-07-19 | |||
| JP2004036573A | 2004-02-05 |
Foreign References:
| US6708494B1 | 2004-03-23 |