| 摘要 |
<p>A heat exchanger includes an insert (10) having a plurality of longitudinal flutes (16) disposed about its periphery defining flow passages (17) of enhanced surface area. The insert (10) includes at least one slot (23) and expansion means (25), (28), (31) so that the insert can be inserted into a duct (11) without press fitting and subsequently expanded to urge the flutes (16) into intimate thermal contact with the wall of the duct (11). Removal of the expanding force permits the insert (10) to be removed from the duct (11) for maintenance.</p> |
