Performance of a transcritical or supercritical CO2 Rankin cycle engine
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United States of America Patent
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Jan 16, 2018
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Apr 20, 2012
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Apr 20, 2011
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Abstract
A Rankine Expander System that converts low quality heat (heat usually at temperatures below 400 degrees Celsius) to electricity by using the properties of trans-critical CO2. The system is comprised of a compressor, an expander, three heat exchangers, and a permanent magnet alternator (PMA). It operates at pressures and temperatures that hold the CO2 above its critical point for the full cycle, and as such, attains high efficiencies even at low power. Under some conditions the efficiency can exceed 50%.
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