FIELD: fire fighting under conditions of subzero temperatures with icing and freezing of fire pressure hoses. SUBSTANCE: water supplied through hose line is heated in main heat exchanger, supplied to steam generator for production of steam and directed through hose line to fire seat. Formed steam by steam generator is additionally heated during its flow in hose line through coil of additional heat exchanger from the main heat exchanger. Water formed in steam generator is returned through channel to main heat exchanger. EFFECT: higher efficiency. 1 dwg
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