FIELD: thermal engineering; production of heat-carrying agents for various fields of national economy. SUBSTANCE: heat-and- steam generator designed to produce several kinds of heat-carrying agents (hot water, pure steam, and steam-water mixture) has enclosed annular space formed between casing and fire tube that accommodates water boiler and recuperator intercommunicating through hot-water line. Combustion and dilution chambers are provided with holes to pass water and air from respective headers arranged over outer diameter of casing. Combustion chamber is joined with converging-diverging nozzle turning into cylindrical nozzle. Dilution chamber is disposed in supersonic converging part of converging-diverging nozzle. EFFECT: reduced size, enhanced economic efficiency and operating reliability, enlarged functional capabilities. 2 cl, 1 dwg
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