Title: Enhanced exergy analysis and optimisation of a trigeneration system

Authors: Sina Zandi; Atabak Fazeli; Kamyar Golbaten Mofrad; Gholamreza Salehi; Mohammad Hasan Khoshgoftar Manesh

Addresses: Energy, Environment, and Biologic Research Lab (EEBRLab), Division of Thermal Sciences and Energy Systems, Department of Mechanical Engineering, Faculty of Technology & Engineering, University of Qom, Qom, Iran; Center of Environmental Research, University of Qom, Qom, Iran ' Department of Mechanical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran ' Energy, Environment, and Biologic Research Lab (EEBRLab), Division of Thermal Sciences and Energy Systems, Department of Mechanical Engineering, Faculty of Technology & Engineering, University of Qom, Qom, Iran; Center of Environmental Research, University of Qom, Qom, Iran ' Department of Mechanical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran ' Energy, Environment, and Biologic Research Lab (EEBRLab), Division of Thermal Sciences and Energy Systems, Department of Mechanical Engineering, Faculty of Technology and Engineering, University of Qom, Qom, Iran; Center of Environmental Research, University of Qom, Qom, Iran

Abstract: In this paper, an integrated trigeneration system including Brayton, organic Rankine, and ejector refrigeration cycles has been analysed and optimised from energy, exergy, exergoeconomic, exergoenvironmental (4E) perspectives in summer and winter for decreasing destruction cost and environmental impact. The remarkable novelty of this work is environmental considerations, along with analysing systems thermodynamically and economically. The results show that the amount of product in summer is higher than in winter while destruction of environmental impacts is lower. Exergy efficiency has been obtained at 24.3% and 23.6% in summer and winter, respectively.

Keywords: trigeneration system; ejector refrigeration cycle; exergoeconomic analysis; exergoenvironmental analysis; waste heat recovery; advanced exergy analysis.

DOI: 10.1504/IJEX.2022.124747

International Journal of Exergy, 2022 Vol.39 No.1, pp.97 - 116

Received: 11 Apr 2021
Accepted: 09 Dec 2021
Published online: 08 Aug 2022 *

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