FIELD: heating.
SUBSTANCE: system of fuel and buffer gas heating comprises "oil-gas" heat exchanger with feed and drain pipelines of oil and gas, to heat fuel and buffer gas due to heat exchange with compressed natural gas arriving into manifold downstream compressor, and also with oil to be cooled from bearing units of gas-turbine engine and supercharger of gas-pumping machine, system is structurally made of heat exchanging devices connected to each other: two serially connected heat exchangers "gas-gas" and "gas-oil", in the first of which heating coolant is compressed natural gas, in the second one - oil to be cooled, and heated coolant in the first and second heat exchangers is fuel gas, besides the third additional heat exchanger "gas-oil" is connecte serially to the second heat exchanger, and in the third heat exchanger oil to be cooled previously releases part of heat to heated coolant - buffer gas.
EFFECT: invention makes it possible to increase energy-saving, to efficiently and fully recycle heat.
1 dwg
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