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Lookup NU author(s): Dr Yiji LuORCiD, Professor Tony Roskilly
This is the authors' accepted manuscript of an article that has been published in its final definitive form by Elsevier Ltd, 2019.
For re-use rights please refer to the publisher's terms and conditions.
© 2018 Elsevier Ltd In this work, organic Rankine cycle (ORC) integrated with Latent Thermal Energy Storage (LTES) system for engine waste heat recovery has been proposed and investigated to potentially overcome the intermittent and fluctuating operational conditions for vehicle applications. A melting-solidification model has been established to investigate and compare the performance of twelve Phase Change Materials (PCMs) under different heat source conditions. Among the twelve PCMs, LiNO3-KCl-NaNO3 is identified as the optimal PCM for engine exhaust heat recovery. The performance of the ORC system integrating with different volume of LTES using LiNO3-KCl-NaNO3 under dynamic heat source simulating vehicle conditions is studied. Results illustrate the fluctuation of engine exhaust heat can be potentially overcome by using the proposed solution. The condition of 100 L LTES provides 30.4% larger total output work than that of 50 L LTES, while it is merely 1.5% larger than that of 90 L LTES. The performance of three different LTES-ORC scenarios are compared and results show ORC combining with double LTES delivers 17.2% larger total power output than that of single LTES (100 L) under the same operational conditions.
Author(s): Yu X, Li Z, Lu Y, Huang R, Roskilly AP
Publication type: Article
Publication status: Published
Journal: Energy
Year: 2019
Volume: 170
Pages: 1098-1112
Print publication date: 01/03/2019
Online publication date: 28/12/2018
Acceptance date: 26/12/2018
Date deposited: 28/02/2019
ISSN (print): 0360-5442
ISSN (electronic): 1873-6785
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.energy.2018.12.196
DOI: 10.1016/j.energy.2018.12.196
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