Importance

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Abstract

A supercritical working fluid closed cycle heat engine includes, in fluid flow series:

a heat source heat exchanger configured to raise the temperature of a working fluid;an expander configured to extract work from the working fluid;a condenser configured to exchange heat between the working fluid and the cooling medium;and a separator configured to separate liquid phase working fluid from gaseous phase working fluid and deliver gaseous phase working fluid to a gaseous compressor and liquid phase working fluid to a fixed displacement liquid pump, the compressor and pump being arranged in parallel. Each of the compressor and fixed displacement pump are configured to return fluid to the heat source heat exchanger. The compressor comprises a variable inlet guide vane and a variable outlet diffuser vane.

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First Claim