Exergy analysis of modified-supercritical power plant with solar assisted feedwater heating and CO₂ capture
by Rajesh Kumar; Sujit Karmakar
International Journal of Exergy (IJEX), Vol. 41, No. 1, 2023

Abstract: Solar energy is the most readily available energy in India, which can be utilised in coal-fired thermal power plants for feedwater heating and Monoethanolamine (MEA) for MEA regeneration in post-combustion CO₂ capture unit. The present study deals with 4-E (energy, exergy, environment, and economic) analysis of a 500 MWe Supercritical (SupC) coal-based thermal power plant with solar-assisted feedwater heating and MEA regeneration in CO₂ capture unit. Results show that the plant efficiency is improved by 8.2% points, and the coal consumption rate is reduced by 18%. The levelised cost of electricity (LCoE) generation is increased to INR 6, and the cost for CO₂ avoided is INR 3607 per tonne of CO₂.

Online publication date: Sun, 14-May-2023

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