heated well

Abstract

To provide a heating well with higher heating efficiency to solve problems of a conventional heating well, in which heat is transferred to the processing object area by radiation, and heat transmission by radiation is less efficient than heat transmission by conduction.SOLUTION: A heating well used for in situ purification of contaminated soil includes: an outer pipe 10 forming a closed space, a heat medium 30 with fluidity filled in the outer pipe 10, an inner pipe 12 housed in the outer pipe 10 and having apertures at an upper part and a lower part, and a heater 20 for heating the heat medium 30 inside the inner pipe 12.SELECTED DRAWING: Figure 1

Claims

1. A heated well used for in-situ remediation of contaminated soil, An outer tube that forms a closed space, A fluid heat transfer medium is filled inside the outer tube, An inner tube housed within the outer tube and having openings at the top and bottom, A heated well having a heater for heating a heat transfer medium inside the inner tube.

2. The heating well according to claim 1, wherein the inner tube has an upper and lower end that is open, and the lower end of the inner tube is fixed to the bottom of the outer tube via a fixing member having a slit through which the heat transfer medium can pass.

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