Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)

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Ecological function and exergy efficiency of Split-Heating Split-Expansion S-CO2 Brayton cycle

Authors
Jianli Chen1, *, Qinglong Jin1, Jialuo Huang1
1College of Power Engineering, Naval University of Engineering, Wuhan, Hubei, 430033, China
*Corresponding author. Email: M22380706@nue.edu.cn
Corresponding Author
Jianli Chen
Available Online 14 May 2024.
DOI
10.2991/978-94-6463-415-0_71How to use a DOI?
Keywords
finite-time thermodynamics; Supercritical carbon dioxide Brayton cycle; Ecological function; Exergic efficiency
Abstract

The Split-Heating Split-Expansion Supercritical CO2 (S-CO2) Brayton cycle finds application for the recovery of flue gas waste heat from gas turbines. In this paper, the Split-Heating Split-Expansion S-CO2 Brayton cycle with finite temperature difference heat transfer, irreversible compression, irreversible expansion and other irreversible factors is studied. Subsequently, adopted the idea of finite time thermodynamics to study the cyclic ecological function and exergy efficiency under the conditions of mass flow rate, pressure ratio, shitter coefficient, current divider coefficient, distribution ratio of thermal conductivity, turbine efficiency and compressor efficiency changes. The results indicate that there is an optimal pressure ratio which maximizes the cyclic ecological function and exergy efficiency at different mass flow rates, compressor efficiencies, turbine efficiencies and discharge coefficients. The distribution ratio of thermal conductivity interacts to influence the cyclic ecological function and exergy efficiency.

Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)
Series
Atlantis Highlights in Engineering
Publication Date
14 May 2024
ISBN
10.2991/978-94-6463-415-0_71
ISSN
2589-4943
DOI
10.2991/978-94-6463-415-0_71How to use a DOI?
Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Jianli Chen
AU  - Qinglong Jin
AU  - Jialuo Huang
PY  - 2024
DA  - 2024/05/14
TI  - Ecological function and exergy efficiency of Split-Heating Split-Expansion S-CO₂ Brayton cycle
BT  - Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)
PB  - Atlantis Press
SP  - 668
EP  - 677
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-415-0_71
DO  - 10.2991/978-94-6463-415-0_71
ID  - Chen2024
ER  -