Exergy analysis for solid oxide fuel cell integrated hybrid desiccant cooling system

Siwoong Kim, Jinyoung Ham, Seunghun Oh, Jongyun Jung and Sanggyu Kang

Renewable Energy, 2025, vol. 245, issue C

Abstract: A numerical study on the residential solid oxide fuel cell (SOFC)-hybrid desiccant cooling (HDC) system has been proposed in our previous study. It has been established that only energy analysis cannot determine the optimal operating scenario. Since the SOFC operates at high temperatures, exergy analysis should be conducted to establish optimal system design by identifying specific components that have significant thermodynamic losses. It has been confirmed that substantial exergy destruction is observed in catalytic combustors, external reformers, and heat exchangers due to irreversible heat loss where reactions and heat transfer are observed at high temperatures. The efficiency of the SOFC-HDC system under rated condition without a burner is confirmed to be the highest at 44.1 %. The HDC system dominates the SOFC system in determining overall exergy efficiency in all scenarios. This research provides insights for improving adsorption or absorption cooling systems integrated with the SOFC system.

Keywords: Solid oxide fuel cell (SOFC); Hybrid desiccant cooling (HDC); Trigeneration; Exergy analysis; System optimization (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:245:y:2025:i:c:s0960148125004653

DOI: 10.1016/j.renene.2025.122803

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