Swirl reducing gas turbine engine recuperator

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 passages having an arcuate profile in a plane perpendicular to a central axis of the recuperator to reduce a swirl of the exhaust flow, the arcuate profile defining a curve having a concave side facing a same circumferential direction from adjacent the exhaust inlet to adjacent the exhaust outlet and the arcuate profile configured to direct the exhaust flow in an arcuate direction from the exhaust inlet to the exhaust outlet;
• air passages in heat exchange relationship with the exhaust passages and providing fluid flow communication between an air inlet and an air outlet;
• 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;
• 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;
• and
• circumferential splitters extending upstream from the exhaust inlet of the recuperator and curved in the plane perpendicular to the central axis of the recuperator to reduce the swirl of the exhaust flow.