| 摘要 |
PROBLEM TO BE SOLVED: To improve drainage performance of a finned tube heat exchanger.SOLUTION: A finned tube heat exchanger 100 includes: a plurality of fins 31 arranged parallel to one another; and a heat transfer tube 21 configured so that a medium flows therethrough to exchange heat with a gas. The fin 31 includes a plurality of through-holes 37h, a plurality of tube peripheral parts (flat part 35), a pair of first inclined parts 36, and a plurality of second inclined parts 38. The plurality of through-holes 37h includes an upper through-hole 371h and a lower through-hole 372h which are adjacent to each other in a tiered direction thereof. An outer edge 38p of the second inclined part 38 formed around the upper through-hole 371h is configured to be stacked on an outer edge 38p of the second inclined part 38 formed around the lower through-hole 372h to form a joint part 34 of the second inclined parts 38 which are adjacent to each other in a tiered direction thereof. An upstream side first inclined part 36a is separated from a downstream side first inclined part 36b by the joint part 34. |
