Patent ID: 9395122
Filing Date: 2016-07-19
CPC Classification: F02C,F05D,F28D,F28F

Claim Text:
1. A recuperator configured to extend within an exhaust duct of a gas turbine engine, the recuperator comprising: exhaust passages providing fluid flow communication between an exhaust inlet and an exhaust outlet, the exhaust inlet being oriented to receive exhaust flow from a turbine of the engine and the exhaust outlet being oriented to deliver the exhaust flow to atmosphere, the exhaust inlet having a smaller cross-sectional area than that of the exhaust outlet, each exhaust passage including a curved portion, and a cross sectional area of at least the curved portion of each exhaust passage progressively increasing along a flow direction defined from the exhaust inlet to the exhaust outlet such as to diffuse the exhaust flow; air passages in heat exchange relationship with the exhaust passages and providing fluid flow communication between an air inlet and an air outlet, the air and exhaust passages being relatively oriented such as to define a mixed counter flow and double bass cross flow heat exchanger; an inlet connection member defining the air inlet and being designed to sealingly engage a first plenum in fluid flow communication with a compressor discharge of the gas turbine engine; and an outlet connection member defining the air outlet and being designed to sealingly engage a second plenum containing a combustor of the gas turbine engine.