| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an underground temperature stratified heat storage water tank of low manufacturing costs and high heat storage performance. <P>SOLUTION: In this underground temperature stratified heat storage water tank constituted by joining a plurality of steel pipe piles or steel pipe water tanks, a vaned steel pipe pile or a vaned steel pipe water tank at a tip portion includes an inner pipe having a diameter smaller than an inner diameter of the vaned steel pipe pile or the vaned steel pipe water tank, and closed at its tip. The vaned steel pipe pile or the vaned steel pipe water tank is rotated and press-fitted to a prescribed position, then the inner pipe is extended by a joint, and the vaned steel pipe pile or the vaned steel pipe water tank and a relayed steel pipe are connected to ensure a water depth of the heat storage water tank. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
