Patent ID: 6293338
Filing Date: 2001-09-25
Classification: F28D,F28F

Abstract:
A recuperator for a gas turbine engine comprising:a plurality of cells disposed in juxtaposed relation to one another in an annular array, each of said cells comprisinga high pressure plate having spaced integral ribs thereon defining a plurality of spaced high pressure air channels; anda low pressure plate welded to said high pressure plate and having a plurality of spaced integral ribs which, in combination with the high pressure plate of an adjacent cell, define a plurality of low pressure exhaust gas channels, wherein either at least two of said plurality of high pressure air channels or at least two of said plurality of low pressure exhaust gas channels constitute a plurality of channels having different lengths, and a spacing between ribs of at least a portion of a longer of said plurality of channels having different lengths is larger than a spacing between ribs of at least a portion of a shorter of said plurality of channels having different lengths.