FIELD: industrial power engineering. SUBSTANCE: power plant has partially closed loop including compressor 1, combustion chamber 2, turbine 3, flow separator 4, mixer 5, thermochemical reactor 6, and heat-exchanger-utilizer 7 connected in series. The loop also includes heat-exchanger- regenerator 8 with heat exchanging surfaces for heating oxygen entering combustion chamber 2 and methane entering mixer 5. Heat-exchanger-regenerator 8 is connected with one of the outlets of flow separator 4. The plant also has the closed power steam loop connected with the partially closed loop through heat-exchanger-utilizer 7 and including steam turbine 9, condenser 10, and water pump 11 connected in series. EFFECT: enhanced efficiency. 2 cl, 1 dwg
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