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

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2021-6-01

Author

Mutlu, Balkan
Baker, Derek Keıth
Kazanç Özerinç, Feyza

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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.

URI

https://www.mdpi.com/1099-4300/23/6/766
https://hdl.handle.net/11511/91143

Journal

Entropy

DOI

https://doi.org/10.3390/e23060766

Collections

Department of Mechanical Engineering, Article

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Citation Formats

B. Mutlu, D. K. Baker, and F. Kazanç Özerinç, “Development and Analysis of the Novel Hybridization of a Single-Flash Geothermal Power Plant with Biomass Driven sCO2-Steam Rankine Combined Cycle,” Entropy, pp. 766–768, 2021, Accessed: 00, 2021. [Online]. Available: https://www.mdpi.com/1099-4300/23/6/766.