| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a geothermal utilization system that saves the trouble to bury pipes in the ground. <P>SOLUTION: The geothermal utilization system includes a piping system (La) buried in the ground (G). The piping system (La) is configured to function such that a heating medium flows inside to achieve heat exchange with geothermal heat, and includes an interposed heat exchanger (1) to which a compression type air conditioner (3) is connected, wherein the heating medium is carbon dioxide and heat exchange is conducted between heat of evaporation of the carbon dioxide and the geothermal heat, and the piping system (La) includes double pipes such that carbon dioxide in liquid phase flows in the inner pipe and carbon diode in gas phase flows in the outer pipe, the temperature of a region of the piping system (La) exiting from the heat exchanger (1) being set to 0 to 15°C for warming-up and to 15 to 30°C for cooling to heat-exchange the heat of evaporation of the carbon diode and the geothermal heat. <P>COPYRIGHT: (C)2012,JPO&INPIT |
