| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat collection structure, a fluid heat utilization device, and a repair method of a fluid passage body.SOLUTION: A heat collection structure for collecting heat of a fluid 1 such as liquid or gas includes a U-shaped, reverse U-shaped, tubular, or C-shaped main body 3 which is provided with a fluid passage path 2 through which the fluid 1 passes. The main body 3 includes a recess 4 opening in the fluid passage path 2. The recess 4 includes a heat exchange medium 5, a heat exchange medium introduction part which introduces the heat exchange medium 5 to the recess 4, and a heat exchange medium derivation part 7 which derives the heat exchange medium 5 from the recess 4. An opening 4a of the recess 4 is blocked by a heat transfer body 8. |
