Patent ID: 6991026

Claim:
A heat exchange cell for use in a recuperator, the cell comprising: top and bottom plates spaced apart to define therebetween an internal space, each of the top and bottom plates defining inlet and outlet openings communicating with the internal space for the respective inflow and outflow of fluid with respect to the internal space; a plurality of internal matrix fins within the internal space and metallurgically bonded to the top and bottom plates; a plurality of inlet header tubes within the internal space and communicating between the inlet opening and the matrix fins, each inlet header tube being rigidly affixed to at least one adjacent inlet header tube and to the top and bottom plates; and a plurality of outlet header tubes within the internal space and communicating between the matrix fins and the outlet opening, each outlet header tube being rigidly affixed to at least one adjacent outlet header tube and to the top and bottom plates.