Title: Energy and exergy analysis of CLC-based biomass fired power plants: effect of different oxygen carriers, hydrogen and power co-production

Authors: Ramsagar Vooradi; Venkata Suresh Patnaikuni; Manohar Kakunuri; Shailesh Singh Sikarwar

Addresses: National Institute of Technology Warangal, Hanumkonda, Warangal – 506004, TS, India ' National Institute of Technology Warangal, Hanumkonda, Warangal – 506004, TS, India ' National Institute of Technology Warangal, Hanumkonda, Warangal – 506004, TS, India ' National Institute of Technology Warangal, Hanumkonda, Warangal – 506004, TS, India

Abstract: The depletion of fossil fuels and environmental degradation has increased interest in renewable energy harvesting. Biomass chemical looping combustion is a promising carbon-negative energy generation method. This work analyses a chemical looping-based biomass-fired power plant integrated with an ORC cycle for electricity generation with different oxygen carriers. Sensitivity analysis is conducted on design parameters to enhance energy efficiency. Performance comparison of different oxygen carriers in terms of energy and exergy shows that blended carriers improve process economics, carbon conversion, redox characteristics and overall plant performance. The coproduction of power and hydrogen significantly enhances energy and exergy efficiencies compared to biomass-only power production.

Keywords: chemical looping combustion; CLC; chemical looping hydrogen production; oxygen carriers; energy and exergy efficiencies; CO₂ capture.

DOI: 10.1504/IJEX.2025.146048

International Journal of Exergy, 2025 Vol.46 No.3/4, pp.278 - 298

Received: 01 Jun 2024
Accepted: 26 Oct 2024
Published online: 02 May 2025 *

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