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Open AccessFeature PaperReview

Review of Experimental Research on Supercritical and Transcritical Thermodynamic Cycles Designed for Heat Recovery Application

1
Department of Flow, Heat and Combustion Mechanics, Ghent University–UGent, Sint-Pietersnieuwstraat 41, 9000 Gent, Belgium
2
Flanders Make, the Strategic Research Centre for the Manufacturing Industry, 3920 Lommel, Belgium
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Department of Natural Resources and Agricultural Engineering, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
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Department of Physics, Université Alioune Diop de Bambey, P.O. Box 30 Bambey, Senegal
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Laboratory of Thermal Hydraulics and Multiphase Flow, INRASTES, National Center for Scientific Research “Demokritos”, Patriarchou Grigoriou and Neapoleos 27, 15341 Agia Paraskevi, Greece
6
Department of Natural Resources and Agricultural Engineering, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(12), 2571; https://doi.org/10.3390/app9122571
Received: 21 May 2019 / Revised: 14 June 2019 / Accepted: 17 June 2019 / Published: 25 June 2019
(This article belongs to the Special Issue Organic Rankine Cycle Systems for Waste-Heat Recovery)
Supercritical operation is considered a main technique to achieve higher cycle efficiency in various thermodynamic systems. The present paper is a review of experimental investigations on supercritical operation considering both heat-to-upgraded heat and heat-to-power systems. Experimental works are reported and subsequently analyzed. Main findings can be summarized as: steam Rankine cycles does not show much studies in the literature, transcritical organic Rankine cycles are intensely investigated and few plants are already online, carbon dioxide is considered as a promising fluid for closed Brayton and Rankine cycles but its unique properties call for a new thinking in designing cycle components. Transcritical heat pumps are extensively used in domestic and industrial applications, but supercritical heat pumps with a working fluid other than CO2 are scarce. To increase the adoption rate of supercritical thermodynamic systems further research is needed on the heat transfer behavior and the optimal design of compressors and expanders with special attention to the mechanical integrity. View Full-Text
Keywords: supercritical ORC; supercritical cycle; CO2; heat-pump; power cycle; steam cycle; waste heat recovery; heat-to-power; heat-to-upgraded heat supercritical ORC; supercritical cycle; CO2; heat-pump; power cycle; steam cycle; waste heat recovery; heat-to-power; heat-to-upgraded heat
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MDPI and ACS Style

Lecompte, S.; Ntavou, E.; Tchanche, B.; Kosmadakis, G.; Pillai, A.; Manolakos, D.; De Paepe, M. Review of Experimental Research on Supercritical and Transcritical Thermodynamic Cycles Designed for Heat Recovery Application. Appl. Sci. 2019, 9, 2571.

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