| 摘要 |
PROBLEM TO BE SOLVED: To provide an underground heat exchange pile made of a polyethylene pipe with no joint location.SOLUTION: In an underground heat exchange pile made of a polyethylene pipe, a bent section, in which a heat medium liquid is turned when going and returning, is bent in a U-shape through a metal sheath pipe 2 with an inside diameter larger than an outside diameter of the polyethylene pipe 1 to dispense with jointing of the polyethylene pipe 1. It is pressed into cement milk slurry 3, and the cement milk slurry 3 is hardened. |
