14 Int. J. Exergy, Vol. 31, No. 1, 2020 Copyright © 2020 Inderscience Enterprises Ltd. Energy and exergy analyses of chemical looping combustion-based 660 MW e supercritical coal-fired power plant Gajanan Dattarao Surywanshi, B. Basant Kumar Pillai, Venkata Suresh Patnaikuni*, Ramsagar Vooradi and Sarath Babu Anne Department of Chemical Engineering, National Institute of Technology Warangal, 506004, India Email: gajanand9@gmail.com Email: basantkumarpillai@yahoo.co.in Email: pvsuresh@nitw.ac.in Email: ramsagar@nitw.ac.in Email: sarat@nitw.ac.in *Corresponding author Abstract: Coal still remains to be the major resource for power production in many countries. Supercritical (SupC) steam generated coal-fired power plants (CFPPs) are found to be superior to subcritical steam generated plants in terms of the overall plant efficiency. Chemical looping combustion (CLC), which is an indirect combustion between fuel and air, is an innovative, inherent CO2 capture and recent technology for power production. In this study, two cases – conventional SupC CFPP without CO2 capture and CLC-based SupC CFPP for high-ash Indian coal have been simulated. Detailed energy and exergy analyses are conducted for both the cases and compared. The study shows that CLC-based capture technology has less energy penalty with Fe2O3 oxygen carrier and little energy gain with CuO and NiO carriers compared to conventional plant without CO2 capture. This study demonstrates the superiority of CLC-based SupC CFPP for CO2 capture over the conventional plant. Keywords: supercritical power plant; chemical looping combustion; CLC; energy analysis; exergy analysis; high ash coal. Reference to this paper should be made as follows: Surywanshi, G.D., Pillai, B.B.K., Patnaikuni, V.S., Vooradi, R. and Anne, S.B. (2020) ‘Energy and exergy analyses of chemical looping combustion-based 660 MWe supercritical coal-fired power plant’, Int. J. Exergy, Vol. 31, No. 1, pp.14–33. Biographical notes: Gajanan Dattarao Surywanshi is a Research Scholar from the Department of Chemical Engineering at the NIT Warangal, India. He is currently working in the area of chemical looping combustion of high ash Indian coals and CO2 utilisation. B. Basant Kumar Pillai is a Research Scholar from the Department of Chemical Engineering at the NIT Warangal, India. He is currently working in the area of calcium and chemical looping combustion.