{"title":"Evaluation and Optimization of a cascade PEMFC system for enhancing coalbed methane recovery considering carbon capture and carbon taxes","authors":"Aixiang Xu, Qi Yang, Lanxiang Yang, Wei Huang, Yiling Ke, Zihao Wang, Sheng Yang, Chengwei Deng","doi":"10.1016/j.psep.2025.107582","DOIUrl":null,"url":null,"abstract":"In this work, a cascade PEMFC system for enhancing coalbed methane recovery is proposed. Conventional and advanced exergy, exergoeconomic, and exergoenvironmental analyses are performed to determine the irreversibility and identify potential improvements for each component. Use of monoethanolamine solution to absorb the large amount of carbon dioxide produced during the reaction. At the same time, the carbon tax is considered in the exergoeconomic analysis. Multi-objective optimization visualizes the distribution of non-inferior solutions through Pareto front and uses TOPSIS and Shannon entropy methods to determine the optimal solution. The result indicates that the exergy destruction, exergoeconomic and exergoenvironmental impact rates of the system are 298.0251<ce:hsp sp=\"0.25\"></ce:hsp>kW, 27.8790$/h, and 424.3612mpts/h, respectively. The results of the advanced exergy destruction, exergoeconomic and exergoenvironmental show that the cathode has the highest avoidable exergy destruction and exergoeconomic cost rate (51.1256<ce:hsp sp=\"0.25\"></ce:hsp>kW and 2.5326$/h), respectively. The heat exchanger 2 has the highest avoidable exergoenvironmental impact rates, which is 58.5541 mpts/h. The three parameters of the total exergy destruction, the total exergoeconomic cost rate, and the exergoenvironmental impact rates are selected for the multi-objective optimization, and it is found that the system is optimal at a reforming temperature of 822.39°C. This research provides a clearer direction for optimizing this novel coupled system.","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"31 1","pages":""},"PeriodicalIF":6.9000,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Process Safety and Environmental Protection","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1016/j.psep.2025.107582","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
In this work, a cascade PEMFC system for enhancing coalbed methane recovery is proposed. Conventional and advanced exergy, exergoeconomic, and exergoenvironmental analyses are performed to determine the irreversibility and identify potential improvements for each component. Use of monoethanolamine solution to absorb the large amount of carbon dioxide produced during the reaction. At the same time, the carbon tax is considered in the exergoeconomic analysis. Multi-objective optimization visualizes the distribution of non-inferior solutions through Pareto front and uses TOPSIS and Shannon entropy methods to determine the optimal solution. The result indicates that the exergy destruction, exergoeconomic and exergoenvironmental impact rates of the system are 298.0251kW, 27.8790$/h, and 424.3612mpts/h, respectively. The results of the advanced exergy destruction, exergoeconomic and exergoenvironmental show that the cathode has the highest avoidable exergy destruction and exergoeconomic cost rate (51.1256kW and 2.5326$/h), respectively. The heat exchanger 2 has the highest avoidable exergoenvironmental impact rates, which is 58.5541 mpts/h. The three parameters of the total exergy destruction, the total exergoeconomic cost rate, and the exergoenvironmental impact rates are selected for the multi-objective optimization, and it is found that the system is optimal at a reforming temperature of 822.39°C. This research provides a clearer direction for optimizing this novel coupled system.
期刊介绍:
The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice.
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