| 摘要 |
PROBLEM TO BE SOLVED: To improve work efficiency in constructing a heat collecting system, in a construction method of the heat collecting system in which a plurality of long heat collection pipes are extended in a pipe axial direction along an inner bottom portion of an existing pipe.SOLUTION: A construction method of a heat collecting system 1 including a plurality of long heat collection pipes 10 extended in a pipe axial direction along an inner bottom portion 2a of an existing pipe 2, and exchanging heat between sewage water 3 flowing in the existing pipe 2 and a heat exchange medium flowing in the heat collection pipes 10, includes a process for drawing a group of heat collection pipes 80 into the existing pipe 2 from the outside of the existing pipe 2, a process for individually fixing the group of heat collection pipes 80 in the existing pipe 2, and a process for connecting the plurality of heat collection pipes 10 and going-side and returning-side headers 20, 21. |
