Heat exchanger thermal fatigue stress reduction

摘要

A plate fin heat exchanger includes a plate fin core (16) having a plurality of plates defining a set of hot air passages (30) extending from a hot air inlet region of the plate fin core (16) to a hot air outlet region of the plate fin core and a set of cool air passages (32) extending from a cool air inlet region of the plate fin core to a cool air outlet region of the plate fin core. The plate fin heat exchanger further includes a mounting flange (12) circumscribing the cool air outlet region. At least a portion of the mounting flange (12) has a plurality of heat transfer structures (22) that extend into a flow path of cooling air exiting the cool air outlet region of the plate fin core.