Profitability analysis for working fluids in regasification circuit based on closed Rankine cycle
- Authors: Blagin E.V.1, Uglanov D.A.1, Urlapkin V.V.1, Marakhova E.A.1, Korneev S.S.1
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Affiliations:
- Samara National Research University named after academician S.P. Korolev
- Issue: Vol 113, No 4 (2024)
- Pages: 188-199
- Section: Original Study Articles
- URL: https://ogarev-online.ru/0023-124X/article/view/357963
- DOI: https://doi.org/10.17816/RF679783
- EDN: https://elibrary.ru/EMZLIQ
- ID: 357963
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Abstract
BACKGROUND: The global transition to low-carbon energy requires the development of efficient technologies for utilizing the cold energy of liquefied gases. However, existing solutions are expensive and have low efficiency. Gaps in the improvement of working fluids and Rankine cycle parameters limit the profitability of such systems. This study is aimed at selecting the optimal working fluid and operating conditions ensuring the least payback period and the highest energy efficiency.
AIM: To develop of a method for selecting the optimal working fluid and parameters of a closed Rankine cycle for regasification of cryogenic products, ensuring the highest energy efficiency and the least plant payback period.
METHODS: 1) Thermodynamic analysis, i.e. simulation of the Rankine cycle using the equations of energy, entropy, and exergy to estimate efficiency and energy losses;
2) Exergetic analysis to determine irreversible losses in system components (heat exchangers, turbine, and pump) and assess their influence on the overall efficiency;
3) Economic modeling to calculate the cost of equipment and operating costs based on empirical dependencies, followed by optimization based on the least payback period;
4) Multi-criteria optimization (Pareto method) to search for trade-off solutions between the plant capacity and capital costs for various working fluids;
5) Comparative analysis to assess the effectiveness of alternative working fluids (methane, oxygen, and organic refrigerants) based on thermodynamic and economic indicators.
RESULTS: The study allows to determine the optimal operating parameters of the system, including the choice of the working fluid, temperature conditions, and design features of heat exchangers, contributing to the development of more effective and profitable cryogenic power engineering solutions.
CONCLUSION: Methane used as a working fluid in a closed Rankine cycle provides the best performance in terms of power, efficiency, and payback. Further improvement of the system requires optimization of heat exchangers to reduce exergy losses.
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##article.viewOnOriginalSite##About the authors
Evgeniy V. Blagin
Samara National Research University named after academician S.P. Korolev
Email: evgenyblagin@gmail.com
ORCID iD: 0000-0002-8921-4122
SPIN-code: 1797-7951
Cand. Sci. (Engineering)
Russian Federation, SamaraDmitry A. Uglanov
Samara National Research University named after academician S.P. Korolev
Email: dmitry.uglanov@mail.ru
ORCID iD: 0000-0003-3198-0585
SPIN-code: 6083-4399
Dr. Sci. (Engineering), Professor
Russian Federation, SamaraViktor V. Urlapkin
Samara National Research University named after academician S.P. Korolev
Author for correspondence.
Email: urlapkin.vv@ssau.ru
ORCID iD: 0000-0002-9410-6003
SPIN-code: 9240-6034
Russian Federation, Samara
Elizaveta A. Marakhova
Samara National Research University named after academician S.P. Korolev
Email: eamarakhova@gmail.com
ORCID iD: 0009-0008-0942-7357
SPIN-code: 4168-2150
Russian Federation, Samara
Sergey S. Korneev
Samara National Research University named after academician S.P. Korolev
Email: korneev.ss@ssau.ru
ORCID iD: 0000-0001-8359-0146
SPIN-code: 1598-8990
Russian Federation, Samara
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