| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To efficiently collect sewage heat by arranging, in a resin pipe, a pipe material in which a heat exchanging medium flows. <P>SOLUTION: A flow path forming layer 21 and a mortar layer 22 as a filling layer are successively formed, from an inner circumferential side, on an inner circumferential face of a straight pipe body 2 of a resin pipe 1. A pipe material 4 in which a heat exchange medium can circulate is arranged in the mortar layer 22. Thus, without obstructing a smooth flow of the sewage that normally flows in a lower half on a bottom side of the pipe, the heat thereof can be efficiently collected through the flow path forming layer 21. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
