FIELD: power engineering. SUBSTANCE: invention relates to power plants with Stirling engines designed for use in craft operating without communication with atmosphere, for instance, in deepwater apparatus and submarines. Proposed power plant has Stirling engine, sea water main line connected with engine cooling circuit through cold accumulator, cryogenic fuel and cryogenic tanks, economizer and cooling unit through which engine cooling circuit passes. Plant has heat exchanger-exhaust gas cooler through which sea water main line passes separator located on exhaust gas line and ejector arranged on oxidizer main line between economizer and cooling unit. Exhaust gas line passes successively through economizer, heat exchanger-exhaust gas cooler, separator and is connected to oxidizer main line through ejector. Liquefied natural gas is used as cryogenic fuel. EFFECT: improved reliability of operation of combustion chamber, reduced mass and overall dimensions of plant, reduced cost of operation of submarine as a whole. 1 dwg
