Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

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

Version 1 : Received: 21 May 2021 / Approved: 24 May 2021 / Online: 24 May 2021 (08:48:56 CEST)

A peer-reviewed article of this Preprint also exists.

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. 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.

Journal reference: Entropy 2021, 23, 766
DOI: 10.3390/e23060766

Abstract

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 EB-SILON®Professional. A topping sCO2 cycle is specifically chosen for its potential for flexible elec-tricity 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 sCO2 cycles is also eliminated by utilizing the heat in the flue gas in the bottoming cycle. Combined cycle thermal efficiency and biomass to electricity conversion efficiency of 24.9% and 22.4% are achieved, respectively. The corresponding fuel consumption of the hybridized plant is found as 2.2 kg/s.

Subject Areas

hybridization; single-flash; geothermal; biomass; sCO2 cycle; olive residue; flexibility

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