Comparative exergoeconomic analysis of atmosphere and pressurized CLC power plants coupled with supercritical CO2 cycle

Yuan Wang, Lin Zhu, Yangdong He, Jianting Yu, Chaoli Zhang and Zi Wang

Energy, 2023, vol. 265, issue C

Abstract: Recently, the incorporation of chemical looping combustion (CLC) and sCO2 Brayton cycle has been regarded as a promising technology for clean and efficient power generation. The intrinsic characteristics of the CLC reactors (interconnected circulating fluidized bed or fixed bed) allow them to operate at different pressures, leading to different technological directions. Therefore, a pair of “CLC coupled sCO2 cycle” systems was proposed, namely the atmosphere CLC (A-CLC-sCO2) and pressurized CLC (P-CLC-sCO2). The purpose of this paper is to determine which configuration holds more benefits from a combined exergetic and economic perspective. The operational boundary conditions for thermodynamic advantage of P-CLC-sCO2 over the optimized A-CLC-sCO2 was firstly investigated. Under respective optimal conditions, the exergy efficiency of P-CLC-sCO2 (51.09%) was found to be 1.16% higher than that of A-CLC-sCO2 (49.91%). Besides, the P-CLC-sCO2 exhibited a lower levelized cost of electricity (79.59 $/MWh) than A-CLC-sCO2 (81.31 $/MWh) when using a nickel-based oxygen carrier (OC), but the A-CLC-sCO2 could further reduce LCOE to 78.93 $/MWh by adopting ilmenite-based OC. In addition, the exergy and exergoeconomic analysis of the main components was carried out to find the system improvement strategies.

Keywords: Chemical looping combustion; sCO2 cycle; Tech-economic assessment; Exergy analysis; Exergoeconomic analysis (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S036054422203287X
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:265:y:2023:i:c:s036054422203287x

DOI: 10.1016/j.energy.2022.126401

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().