| 摘要 |
The exchanger has inner and outer tubes (1, 2), each with turns separated with respect to each other by an interstice of specific width. A burner (8) generates hot gas inside the tubes such that the gas traverses the interstice so as to reheat water circulating in the tubes, where the tubes are made of heat conductive material. The tubes have a configuration such that a minimal spacing between the tubes is lesser than or equal to half of the width of the interstice, and the width of the interstice separating the turns of the tube (2) is lesser than or equal to double the spacing. |
