Patent ID: 8079407

Claim:
An aircraft heat exchanging system comprising: a primary heat transfer zone comprising a heat exchanger of an air conditioning system; and a secondary heat transfer zone integral to said primary heat transfer zone, said secondary heat transfer zone comprising a heat exchanger for an inert gas generating system; planar separator plates contiguous with the primary and the secondary heat transfer zones; one or more heat transfer layers individually formed between two of the planar separator plates and contiguous with the primary and the secondary heat transfer zones; and one or more shared cooling flow layers contiguous with the primary and the secondary heat transfer zones and formed between two of the separator plates, wherein the shared cooling flow layers provide passages for a cooling flow of ram air to both the primary heat transfer zone and the secondary heat transfer zone, and wherein one or more of the planar separator plates is contiguous with both one of the heat transfer layers and one of the shared cooling flow layers.