| 摘要 |
PROBLEM TO BE SOLVED: To heat a wide range of soil with high efficiency over a long time. SOLUTION: The soil heating system includes: a pressure vessel 11 having an electric heater 11b and a water receiving container 11a therein; an air introduction part 14 for introducing pressurized air into the pressure vessel 11; a water tank 15 and a water feed valve 16 for feeding water to the receiving container; a gas feed pipe 12 which is embedded in soil G and sprays pressurized vapor generated in the pressure vessel 11 from a spraying port 12c to the soil G; and a spraying valve 13 which is disposed between the pressure vessel 11 and the spraying port 12c and which communicates and shuts down between the pressure vessel 11 and the gas feed pipe 12. Moreover, the pressure vessel 11, after pressurized air is introduced into the container, pressurizes the water fed to the receiving container 11a with an electric heater 11b to generate pressurized vapor. COPYRIGHT: (C)2011,JPO&INPIT |
