| 摘要 |
PROBLEM TO BE SOLVED: To improve heat-exchanging property between absorption liquid dropped in the outside of a pipe and cooling water passing through the inside of the pipe in an absorber. SOLUTION: A heat transfer pipe 1 provided horizontally inside an absorber comprises a cylindrical pipe part 2 through which cooling water passes and plural fins 3 provided in rows in an axial direction of an outer circumferential surface of the cylindrical pipe part 2, wherein the fins 3 are formed into states where a part of each of the fins 3 is eliminated in a circumferential direction of the cylindrical pipe part 2, and the eliminated parts, the parts 4 of the circumferential direction of the cylindrical pipe parts 2 where the fins 3 are not formed (hereinafter the parts 4 are referred to as circumferential parts 4 without fins), are provided in rows so as to be arranged linearly. The heat transfer pipe 1 may be provided with plural fins 3 in the circumferential direction of the cylindrical pipe part 2 in rows apart from each other so that the circumferential parts 4 without fins of the cylindrical pipe part 2 are dispersed into plural places. The fins 3 are limited to be 1.5 mm or thinner in thickness and 2-5 mm in height, wherein the fins 3 are provided in rows in the outer surface and the axial direction of the cylindrical pipe part 2 and have distances of 5-15 mm each other.
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