In this paper, a detailed thermodynamic performance analysis of a transcritical condensing (TC) cycle is performed with pure CO2 and a blend of 48.5 % propane with 51.5 % CO2 as working fluids. A realistic thermodynamic model is used incorporating irreversibilities in turbo-machineries and heat exchangers. The Key finding is that the addition of propane elevates the heat rejection temperature, but does not impair any of the performance indicators. Such a fluid may be useful for power generation in concentrated solar power applications by using which a hike of up to 2 % can be realized in the thermal efficiency of a power plant.
- International Gas Turbine Institute
Elevation of Heat Rejection Temperature in Transcritical Condensing Cycles Using CO2+Propane Mixtures
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Garg, P, Kumar, P, Srinivasan, K, & Dutta, P. "Elevation of Heat Rejection Temperature in Transcritical Condensing Cycles Using CO2+Propane Mixtures." Proceedings of the ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. Volume 3B: Oil and Gas Applications; Organic Rankine Cycle Power Systems; Supercritical CO2 Power Cycles; Wind Energy. Düsseldorf, Germany. June 16–20, 2014. V03BT36A015. ASME. https://doi.org/10.1115/GT2014-26928
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