FIELD: mechanical engineering; gas transfer sets and power stations. SUBSTANCE: exhaust duct of gas-turbine engine has gas conduits butt-joined at right angle, recovery heat exchanger located on one of gas conduits after turnable gates in direction of working medium flow, and bypass valves. Bypass valves overlapping passage section of gas conduits are in form of louvered gates with parallel axles of turning and are located in place of gas conduit butt joining. Axes of turnable gates are located on generatrix of quarter of cylinder whose radius is equal to width of overlapped gas conduit, and center is in vertex of inner angle of gas conduit butt joining place. EFFECT: reduced level of gas dynamic resistance. 3 dwg
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