LAPSE:2023.33903
Published Article
LAPSE:2023.33903
Multi-Objective Optimization and Fluid Selection of Different Cogeneration of Heat and Power Systems Based on Organic Rankine Cycle
April 24, 2023
Cogeneration of heat and power systems based on the organic Rankine cycle (ORC-CHP) has been proven to be an effective way to utilize waste heat at medium and low temperatures. In this work, three ORC-CHP (combined heat and power based on organic Rankine cycle) systems are simulated and compared, including the SS (serial system), the CS (the condensation system), and the SS/CS. The multi-objective genetic algorithm (MOGA) is used to optimize the three systems respectively to achieve higher exergy efficiency and profit ratio of investment (PRI). The optimal thermal-economic performance is obtained. Twelve organic fluids are adopted to evaluate their performance as working fluids. The calculation results show that SS has the highest exergy efficiency, while SS/CS has the best economic performance. Compared with the highest exergy efficiency of SS and the best economic performance of SS/CS, CS will be the optimal solution considering these two objective functions. Under the optimal working conditions, SS has the highest thermal efficiency because it has the highest net power output. The components with the largest proportion of exergy destruction are the heat exchangers, which also has the highest cost.
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Keywords
combined heat and power (CHP), multi-objective optimization, organic Rankine cycle (ORC), system comparison, working fluid selection
Subject
Suggested Citation
Teng S, Feng YQ, Hung TC, Xi H. Multi-Objective Optimization and Fluid Selection of Different Cogeneration of Heat and Power Systems Based on Organic Rankine Cycle. (2023). LAPSE:2023.33903
Author Affiliations
Teng S: Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China [ORCID]
Feng YQ: School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Hung TC: Department of Mechanical Engineering, National Taipei University of Technology, Taipei 10607, China
Xi H: Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China [ORCID]
Feng YQ: School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Hung TC: Department of Mechanical Engineering, National Taipei University of Technology, Taipei 10607, China
Xi H: Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China [ORCID]
Journal Name
Energies
Volume
14
Issue
16
First Page
4967
Year
2021
Publication Date
2021-08-13
Published Version
ISSN
1996-1073
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Original Submission
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PII: en14164967, Publication Type: Journal Article
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LAPSE:2023.33903
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doi:10.3390/en14164967
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Apr 24, 2023
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