Simultaneous multi-objective optimization of a biogas-based power generation and brine desalination system for using in sport facilities

IF 6.4 2区工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2025-03-03 DOI:10.1016/j.csite.2025.105958

Li Fan , Zhanguo Su

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引用次数: 0

Abstract

The increasing global demand for sustainable energy and potable water necessitates efficient energy conversion technologies. Co-generation systems, which simultaneously produce electricity and desalinated water, represent a promising solution for fulfilling the essential needs of urban areas and localized facilities, such as sports complexes. This study evaluates a co-generation system designed to provide energy and potable water for a specific sports complex. The thermodynamic cycle was simulated utilizing validated numerical methods, solving the governing equations governing the system's operation. Multi-objective optimization, based on the Pareto Front methodology, was implemented to enhance overall system performance and minimize environmental impact. A comprehensive life cycle environmental assessment was performed using exergo-environmental analysis. Baseline simulations indicated a power output of 1441 kW, alongside a desalinated water production rate of 1.392 m³/h. These values correspond to an initial energy efficiency of 71.8 % and an exergy efficiency of 41.64 %. Following the multi-objective optimization procedure, guided by the Pareto Front, the system performance was notably improved. The energy efficiency increased to 72.13 %, and the exergy efficiency reached 44.92 %. Furthermore, the exergo-environmental (Ɛes) exhibited a marked improvement, achieving a value of 0.964, signifying a reduced environmental burden. The results underscore the potential of optimized co-generation systems to enhance energy efficiency and sustainability.

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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.