Importance

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Abstract

Electrical/mechanical power is derived from oxycombustion of hydrocarbons, preferably LNG, in a first of two nested cycles each operating on a Brayton cycle to provide a source of power, without mixing of working fluids between the two cycles. Each cycle employs CO₂ as a working fluid, the first cycle operating under low pressure conditions in which CO₂ is sub-critical, and the other cycle operating under higher pressure conditions in which CO₂ is supercritical. The first cycle serves as a source of heat for the second cycle by gas/gas heat exchange which cools the products of combustion and circulating working fluid in the first cycle and heats working fluid in the second cycle.

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First Claim