3E analysis and optimization of an innovative cogeneration system based on biomass gasification and solar photovoltaic thermal plant

Matin Teymouri, Shayan Sadeghi, Mahdi Moghimi and Samane Ghandehariun

Energy, 2021, vol. 230, issue C

Abstract: In this study, an innovative hybrid solar/biomass cogeneration plant is designed and optimized to generate power and heat. Solar energy is harnessed using photovoltaic/thermal (PV/T) components to produce hydrogen via the water electrolysis method. The produced fuel is then used as an additive in the combustion chamber (CC) of a gas turbine (GT) cycle. The primary fuel used in the CC is high-temperature syngas produced in the gasification process of wooden biomass. Additionally, a steam Rankine cycle (SRC) coupled with a thermoelectric generator (TEG) is utilized to achieve higher efficiency. The proposed system is investigated in detail using thermodynamic approaches of energy, exergy, and exergo-economic analyses. The energy and exergy efficiencies of the system are determined as 69.15% and 23.11%, respectively. The system produces 14.55 MW of electricity with a total cost rate of $633.04/h and a unit product cost of $4.66/GJ. Finally, two optimizations are performed with the exergy efficiency and total cost rate and also exergy efficiency and levelized cost of electricity (LCOE) as the objective functions. In the first optimization, the optimum exergy efficiency is 4.02% less than that of the base case. However, the total cost rate of the system is improved drastically from $633.04/h in the base case to $212.29/h in the optimal case. In the second one, better exergy efficiency and also LCOE is achievable in comparison with the base case.

Keywords: Photovoltaic/thermal; Proton exchange membrane; Biomass; Thermoelectric generator; Exergo-economic analysis; Multi-objective optimization (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:230:y:2021:i:c:s0360544221008951

DOI: 10.1016/j.energy.2021.120646

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