| 摘要 |
Exchanger with a vertical cylindrical ferrule (1) for heating air under pressure in counterflow with smoke circulating in vertical tube bundles distributed uniformly between at least one axial ring (3) and at least one peripheral ring (4). It comprises tube bundles distributed between an axial ring (3) and a peripheral ring (4) and contained in internal (13) and external (23) thermally insulated conduits fastened to the lower (8) and upper (8A) bottom plates. The bundles of the outermost peripheral ring (4) are separated from the ferrule by a free zone (14) in communication with the inlet for a secondary air flow. The exchanger as a whole is supported by a fixed structure (15A) under a lower bottom, and the bundles are fastened to the upper bottom plate (8A) by means of expansion joints (16). <IMAGE> |
