Energy, exergy, and advanced exergy analysis of a novel solar-based S-CO2 cycle and comparison of systems with different layouts

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2024-12-06 DOI:10.1016/j.csite.2024.105612

Qiujie Cheng, Yunlong Zhou, Mei Yang, Xinrui Han, Jiani Liu

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引用次数: 0

Abstract

Solar energy is an endless source of renewable energy, so solar-powered S-CO2 cycle power generation systems have received much attention from scholars. In this research, a new S-CO2 cycle layout based on a recompression cycle and an intercooling cycle is proposed, and the thermal performance of the three layouts is compared and analyzed. Percentage exergy loss of each component in the system is obtained by conventional exergy analysis and further advanced exergy analysis is used to explore the enhancement possibilities of each component and their interactions. The investigation results revealed that the recompression cycle, intercooling cycle and combined cycle had respective evaluations of 38.45 %, 39.775 and 42.05 % efficiency. Sensitivity analysis revealed that the provided cycle has superior efficiency at higher turbine inlet parameters. The conventional exergy analysis and advanced exergy analysis yielded a combined cycle HE1 exergy loss of 8.27 MW and an avoidable exergy loss of 4.70 MW, with a high potential for improvement. This study provides directions for the structural optimization of solar-driven S-CO2 cycle power generation systems.

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.