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Analysis of a combined trilateral cycle - Organic Rankine cycle (TLC-ORC) system for waste heat recovery

Lookup NU author(s): Dr Yiji LuORCiD, Professor Tony Roskilly



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


© 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license ( Peer-review under responsibility of the scientific committee of ICAE2018 - The 10th International Conference on Applied Energy. A combined Trilateral Cycle-Organic Rankine Cycle (TLC-ORC) system for waste heat recovery is proposed in this paper in order to obtain a better matching performance between the heat source and working fluid. Working fluid selection including Cyclohexane, Toluene, Benzene and water for the high temperature cycle is analyzed based on thermodynamic model under different evaporating temperature of high temperature cycle and low temperature cycle. Results show that Toluene has the best performance among the studied four high temperature working fluid. The net power output, thermal efficiency and exergy efficiency increases with T evap,HT or T evap,LT increasing at any a high temperature working fluid. The maximum net power output 11.3 kW, thermal efficiency 24.2% and exergy efficiency 63.2% are achieved by Toluene at T evap,HT =530 K and T evap,LT =373 K at the same time. It is also found that evaporator 1 has the largest exergy destruction while condenser 1 has the smallest one among all the components. Meanwhile, the condenser 2 has the lowest exergy efficiency while condenser 1 has the highest one. These results show us the direction to optimize the system parameters to improve the total efficiency of the whole system.

Publication metadata

Author(s): Li Z, Huang R, Lu Y, Roskilly AP, Yu X

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Energy Procedia

Year of Conference: 2019

Pages: 1786-1791

Online publication date: 01/02/2019

Acceptance date: 02/04/2018

Date deposited: 24/04/2019

ISSN: 1876-6102

Publisher: Elsevier Ltd


DOI: 10.1016/j.egypro.2019.01.421