Energy and Exergy Analysis of Recuperative Organic Rankine Cycle for Six Low-GWP Refrigerants

Mostafizur Rahaman; Khaza Shahriar; Mohammad Ariful Islam

doi:10.38032/scse.2026.4.303

Energy and Exergy Analysis of Recuperative Organic Rankine Cycle for Six Low-GWP Refrigerants

Authors

Mostafizur Rahaman Department of Energy Science and Engineering, Khulna University of Engineering & Technology, Khulna-9203, Bangladesh
Khaza Shahriar Department of Energy Science and Engineering, Khulna University of Engineering & Technology, Khulna-9203, Bangladesh
Mohammad Ariful Islam Department of Mechanical Engineering, Khulna University of Engineering & Technology, Khulna-9203, Bangladesh

DOI:

https://doi.org/10.38032/scse.2026.4.303

Keywords:

Energy, Exergy, Organic Rankine Cycle (ORC), Refrigerants, Global Warming Potential (GWP)

Abstract

The need to recover waste heat from industrial operations is highlighted by the growing need for sustainable energy solutions worldwide. This heat is frequently wasted, which reduces system effectiveness and deteriorates environmental effects. A thorough thermodynamic analysis of recuperative organic Rankine Cycles (ORCs) using low-GWP (GWP < 10) environment-friendly refrigerants is presented in this work. A numerical simulation for six low-GWP refrigerants: R-1243zf, R-1234yf, R-1233zd(E), R-1224yd(Z), R-1234ze(E), and R-1336mzz(Z) is conducted using the Python programming language. In this study, the effects of pump inlet pressure (0.8-1.5 MPa) and turbine inlet pressure (1.0-2.0 MPa) on system performance are evaluated using mass, entropy, energy, and exergy balance equations. R-1243zf emerges as the optimal refrigerant choice for recuperative ORC systems, offering the best combination of high power output (28.04 kW), excellent thermal efficiency (9.43%), and superior exergetic efficiency (31.00%), making it most suitable for applications prioritizing maximum power generation.

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References

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8th International Conference on Mechanical Engineering and Renewable Energy (ICMERE 2025)

Published

02.08.2026

Conference Proceedings Volume

Vol. 4 (2026): Proceedings of 8th International Conference on Mechanical Engineering and Renewable Energy (ICMERE2025)

Section

Articles

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

All the articles published by this journal are licensed under a Creative Commons Attribution 4.0 International License

How to Cite

[1]

M. Rahaman, K. Shahriar, and M. A. Islam, “Energy and Exergy Analysis of Recuperative Organic Rankine Cycle for Six Low-GWP Refrigerants”, SCS:Engineering, vol. 4, pp. 667–672, Aug. 2026, doi: 10.38032/scse.2026.4.303.