Title: Exergy analysis and multi-objective optimisation of ORC using NSGA-II

Authors: Ashwni; Ahmad Faizan Sherwani

Addresses: Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi, 110025, India ' Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi, 110025, India

Abstract: A detailed analysis of the organic Rankine cycle is carried out using environmentally friendly working fluids such as butane, isobutane, hexane, etc. in this study. Moreover, its performance is optimised using the non-dominated sorting algorithm-II. The results indicate that evaporator temperature and the condenser temperature have a major influence on the ORC's exergetic performance. ORC has an optimal exergetic efficiency of 60.49%, and 1.6 years payback period with a $7,846 life cycle cost using hexane.

Keywords: exergy; sensitivity; organic Rankine cycle; ORC; NSGA-II; optimisation; renewable energy; environment; CO₂.

DOI: 10.1504/IJEX.2023.128775

International Journal of Exergy, 2023 Vol.40 No.2, pp.130 - 143

Received: 13 Sep 2021
Accepted: 15 Apr 2022
Published online: 03 Feb 2023 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article