DOUBLE-PIPE TYPE HEAT EXCHANGER AND MODIFIED GAS PRODUCING DEVICE WITH THE SAME

摘要

PROBLEM TO BE SOLVED: To reduce the movement of heat in an axial direction and to improve the efficiency of fins in a double-pipe type heat exchanger.

SOLUTION: A second channel 15 is formed between the outer surface of a cylindrical masking pipe 15a and the inner surface of a cylindrical inner pipe 15b, and a first channel 23 is formed between the outer surface of the inner pipe 15b and the inner surface of a cylindrical casing 3. A second heat conducting fin 17b is mounted on the inner surface of the inner pipe 15b and a first heat conducting fin 17a is mounted on the outer surface of the inner pipe 15b. A raw gas flowing in the second channel 15 and a modified gas flowing in the first channel 23 are heat-exchanged via the inner pipe 15b and the first and second heat conducting fins 17a and 17b.

COPYRIGHT: (C)2004,JPO