FIELD: power engineering industry. SUBSTANCE: part of air taken from combustion chamber is compressed by additional centrifugal stage of compressor and is fed for cooling the cathodes and supporting of air-plasma arc. Jets of low-temperature plasma are mixed with flow of air in fire tube in area of return flows. Hot and partially ionized gas flows around turbine blades: positive ions are attracted and braked by electronic layer of thermoemission forming braked ion-gas boundary layer on surface of blades, thus reducing transfer of heat from gas to turbine blades. EFFECT: enhanced efficiency. 2 dwg
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