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Dr. ERIKA NTAVOU
Agricultural University of Athens

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Research Keywords & Expertise

0 ORC
0 Renewable Energy
0 Reverse Osmosis
0 Solar Energy
0 CHP systems

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Journal article
Published: 15 December 2020 in Sustainability
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Low-enthalpy geothermal resources (e) ORC engine manufactured to operate at temperatures up to 140 °C are used to add reliability in the calculations. In order to meet the needs of the people, four different APMs based on PVs, wind turbines, and geothermal ORC of different but appropriate configurations were designed and sized through optimization. The optimization process was based on particle swarm optimization (PSO). The comparative examination of the results shows that the use of a low-power, low-temperature ORC engine in an APM is technically feasible; more cost effective than the configurations based on PVs, wind turbines, or combination of both; and has increased environmental sustainability.

ACS Style

George Kyriakarakos; Erika Ntavou; Dimitris Manolakos. Investigation of the Use of Low Temperature Geothermal Organic Rankine Cycle Engine in an Autonomous Polygeneration Microgrid. Sustainability 2020, 12, 10475 .

AMA Style

George Kyriakarakos, Erika Ntavou, Dimitris Manolakos. Investigation of the Use of Low Temperature Geothermal Organic Rankine Cycle Engine in an Autonomous Polygeneration Microgrid. Sustainability. 2020; 12 (24):10475.

Chicago/Turabian Style

George Kyriakarakos; Erika Ntavou; Dimitris Manolakos. 2020. "Investigation of the Use of Low Temperature Geothermal Organic Rankine Cycle Engine in an Autonomous Polygeneration Microgrid." Sustainability 12, no. 24: 10475.

Review
Published: 25 June 2019 in Applied Sciences
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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.

ACS Style

Steven Lecompte; Erika Ntavou; Bertrand Tchanche; George Kosmadakis; Aditya Pillai; Dimitris Manolakos; Michel De Paepe. Review of Experimental Research on Supercritical and Transcritical Thermodynamic Cycles Designed for Heat Recovery Application. Applied Sciences 2019, 9, 2571 .

AMA Style

Steven Lecompte, Erika Ntavou, Bertrand Tchanche, George Kosmadakis, Aditya Pillai, Dimitris Manolakos, Michel De Paepe. Review of Experimental Research on Supercritical and Transcritical Thermodynamic Cycles Designed for Heat Recovery Application. Applied Sciences. 2019; 9 (12):2571.

Chicago/Turabian Style

Steven Lecompte; Erika Ntavou; Bertrand Tchanche; George Kosmadakis; Aditya Pillai; Dimitris Manolakos; Michel De Paepe. 2019. "Review of Experimental Research on Supercritical and Transcritical Thermodynamic Cycles Designed for Heat Recovery Application." Applied Sciences 9, no. 12: 2571.