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Development and Analysis of the Novel Hybridization of a Single-Flash Geothermal Power Plant with Biomass Driven sCO2-Steam Rankine Combined Cycle

by 1,2,*, 1,2 and 1
1
Department of Mechanical Engineering, Middle East Technical University, Ankara 06800, Turkey
2
Center for Solar Energy Research and Applications (GÜNAM), Ankara 06800, Turkey
*
Author to whom correspondence should be addressed.
Academic Editor: Attila R. Imre
Entropy 2021, 23(6), 766; https://doi.org/10.3390/e23060766
Received: 21 May 2021 / Revised: 5 June 2021 / Accepted: 7 June 2021 / Published: 18 June 2021
(This article belongs to the Special Issue Thermodynamic Analysis and Process Intensification)
This study investigates the hybridization scenario of a single-flash geothermal power plant with a biomass-driven sCO2-steam Rankine combined cycle, where a solid local biomass source, olive residue, is used as a fuel. The hybrid power plant is modeled using the simulation software EBSILON®Professional. A topping sCO2 cycle is chosen due to its potential for flexible electricity generation. A synergy between the topping sCO2 and bottoming steam Rankine cycles is achieved by a good temperature match between the coupling heat exchanger, where the waste heat from the topping cycle is utilized in the bottoming cycle. The high-temperature heat addition problem, common in sCO2 cycles, is also eliminated by utilizing the heat in the flue gas in the bottoming cycle. Combined cycle thermal efficiency and a biomass-to-electricity conversion efficiency of 24.9% and 22.4% are achieved, respectively. The corresponding fuel consumption of the hybridized plant is found to be 2.2 kg/s. View Full-Text
Keywords: hybridization; single-flash; geothermal; biomass; sCO2 cycle; olive residue; flexibility hybridization; single-flash; geothermal; biomass; sCO2 cycle; olive residue; flexibility
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MDPI and ACS Style

Mutlu, B.; Baker, D.; Kazanç, F. Development and Analysis of the Novel Hybridization of a Single-Flash Geothermal Power Plant with Biomass Driven sCO2-Steam Rankine Combined Cycle. Entropy 2021, 23, 766. https://doi.org/10.3390/e23060766

AMA Style

Mutlu B, Baker D, Kazanç F. Development and Analysis of the Novel Hybridization of a Single-Flash Geothermal Power Plant with Biomass Driven sCO2-Steam Rankine Combined Cycle. Entropy. 2021; 23(6):766. https://doi.org/10.3390/e23060766

Chicago/Turabian Style

Mutlu, Balkan, Derek Baker, and Feyza Kazanç. 2021. "Development and Analysis of the Novel Hybridization of a Single-Flash Geothermal Power Plant with Biomass Driven sCO2-Steam Rankine Combined Cycle" Entropy 23, no. 6: 766. https://doi.org/10.3390/e23060766

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