Xiao Ren
Parametric and economic analysis of high-temperature cascade organic Rankine cycle with a biphenyl and diphenyl oxide mixture
Ren, Xiao; Li, Jing; Pei, Gang; Li, Pengcheng; Gong, Liang
Abstract
High-temperature organic Rankine cycle (ORC) systems have the potential to improve the heat-to-power conversion efficiency and expand the temperature range for heat recovery, heat battery and solar power generation. Restricted by the critical temperature of the commonly used organic working fluids, the current ORC technology has a maximum working temperature of around 300 °C. This paper proposes a high-temperature cascade organic Rankine cycle (CORC) system using a biphenyl and diphenyl oxide (BDO) mixture as the top cycle fluid and conventional organic fluids for the bottom cycle. The BDO mixture has excellent heat stability over a wide operation condition from 12 °C to 400 °C in single-phase and binary-phase states. However, at present a detailed study on the ORC using the mixture is lacking. In this paper, a parametric analysis of the high-temperature CORC system is conducted. A mathematical model based on the equivalent hot side temperature is built to simulate the ORC efficiency. The thermodynamic and exergetic performances of the novel CORC system under different bottom ORC working fluids, mixing chamber temperatures, evaporation temperatures, and condensation temperatures are investigated. The results show the maximum thermal efficiency of the CORC system is 38.74 % and 40.26 % at top ORC evaporation temperatures of 360 °C and 400 °C. The largest exergy destruction takes place in the heat exchanger between the top and bottom ORCs. Besides, the heat regenerators have a significant impact on the thermodynamic performance and can elevate the CORC efficiency by about 4 %. The proposed system has a higher efficiency and a lower equipment cost than conventional steam Rankine cycle at 400 °C while eliminating the challenges of wet steam turbines.
Citation
Ren, X., Li, J., Pei, G., Li, P., & Gong, L. (2023). Parametric and economic analysis of high-temperature cascade organic Rankine cycle with a biphenyl and diphenyl oxide mixture. Energy Conversion and Management, 276, Article 116556. https://doi.org/10.1016/j.enconman.2022.116556
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 4, 2022 |
Online Publication Date | Dec 14, 2022 |
Publication Date | Jan 15, 2023 |
Deposit Date | Jan 2, 2023 |
Publicly Available Date | Jan 3, 2023 |
Journal | Energy Conversion and Management |
Print ISSN | 0196-8904 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 276 |
Article Number | 116556 |
DOI | https://doi.org/10.1016/j.enconman.2022.116556 |
Keywords | Cascade organic Rankine cycle; High-temperature power generation; Biphenyl and diphenyl oxide mixture; Entropy generation; Economic assessment |
Public URL | https://hull-repository.worktribe.com/output/4163173 |
Ensure access to affordable, reliable, sustainable and modern energy for all
Files
Published article
(3.3 Mb)
PDF
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0
Copyright Statement
© 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
You might also like
Editorial: Advanced solar utilization and control technologies in buildings
(2024)
Journal Article
Downloadable Citations
About Repository@Hull
Administrator e-mail: repository@hull.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2025
Advanced Search