Title: Multi-objective optimisation of a novel organic Rankine-Goswami cycle operating with different refrigerants in the organic Rankine cycle

Authors: Mert Sinan Turgut

Addresses: Department of Mechanical Engineering, Faculty of Engineering, Ege University, Bornova, Izmir, Turkey

Abstract: This paper tackles the multi-objective design optimisation and comparative investigation of a cascade organic Rankine-Goswami cycle (ORC-GW) operating with various refrigerants, namely R600, R236ea, and R245fa, in the organic Rankine cycle (ORC). The solution of the multi-objective optimisation problem is achieved by applying the African vultures optimisation algorithm (AVA). The results show that the ORC-GW operating ammonia-water/R600 working fluid pair has increased total cost and second law efficiency compared to its competitors, respectively 24.575 M€ and 0.440.

Keywords: multi-objective optimisation; Goswami cycle; organic Rankine cycle; ORC; thermal design.

DOI: 10.1504/IJEX.2023.129799

International Journal of Exergy, 2023 Vol.40 No.3, pp.317 - 335

Received: 15 Jun 2022
Received in revised form: 09 Aug 2022
Accepted: 09 Aug 2022

Published online: 30 Mar 2023 *

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