FIELD: heat power engineering.;SUBSTANCE: invention can be used for simultaneous generation of thermal and electric energy and can be used for modernization of existing water heating boiler plants in mini-and-heating plants. Hot water from boiler 1 is delivered along heat supply system 2 by means of system pump 3 to consumer. Flue gases are removed from boiler 1 along smoke stack 5 which accommodates heat exchanger 17 of intermediate heating circuit 15. Intermediate heat carrier is heated by flue gases and is delivered by compressor 16 into heater 7 of Stirling engine 6 where it transfers heat of exhaust gases to gaseous working medium of Stirling engine 6, Stirling engine 6 transforms received high-temperature heat into mechanical energy by means of which electric generator 11 is set into operation to generate electric energy. Make up water line 9 passes through cooler of Stirling engine 6 for cooling the engine. Delivery of make up water is provided by pump 10.;EFFECT: possibility of generation of additional electric energy, reduced cost and increased efficiency of power and heating system when water heating boiler plant is changed into mini-power-heating plant.;1 dwg
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