FIELD: cryogenic engineering. SUBSTANCE: high-pressure natural gas from the gas main is fed to a vortex tube, where it is separated into two flows: cold and warm ones. The cold flow in the form of liquefied gas is drained through the main into a heat-insulated vessel. The warm gas flow is precooled, expanding in the turbine with generation of useful power, sucked in the condenser of the Stirling cryogenic machine, where it gets condensed. Liquid gas is drained in a Dewar flask and fed by the pumps to the gas in the gas-containing section of the vessel get condensed due to heat exchange with the liquid gas flowing through the coil-pipe. EFFECT: enhanced efficiency of system and reduced material costs at production, storage and use of liquefied gases, reduced environmental contamination. 2 cl, 1 dwg
