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Performance and sustainability analysis of an Organic Rankine Cycle system in subcritical and supercritical conditions for waste heat recovery

This study addresses the performance analysis of a subcritical and supercritical Organic Rankine Cycle (ORC) with the addition of a preheater or superheater integrated with a turbofan engine. This analysis will try to explore the heat transfer throughout the evaporator for the purpose of determining...

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Main Authors: Saadon, Syamimi, Mohd Nasir, Nur Athirah
Format: Article
Published: Multidisciplinary Digital Publishing Institute 2020
Online Access:http://psasir.upm.edu.my/id/eprint/87111/
https://www.mdpi.com/1996-1073/13/12/3035
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spelling my.upm.eprints.871112024-05-16T02:34:01Z http://psasir.upm.edu.my/id/eprint/87111/ Performance and sustainability analysis of an Organic Rankine Cycle system in subcritical and supercritical conditions for waste heat recovery Saadon, Syamimi Mohd Nasir, Nur Athirah This study addresses the performance analysis of a subcritical and supercritical Organic Rankine Cycle (ORC) with the addition of a preheater or superheater integrated with a turbofan engine. This analysis will try to explore the heat transfer throughout the evaporator for the purpose of determining the ORC output power and thermal efficiency. A simplified numerical model of the ORC for waste heat recovery is presented. The model depicts the evaporator by using a distributed model, and includes parameters such as the effectiveness, heat capacity and inlet temperature of the waste heat and the organic fluid. For a given set of initial parameter values, the output power and thermal efficiency, as well as the mass flow rate of the working fluid are acquired by solving the system’s thermodynamic cycle with the aid of MATLAB software. The model is then verified by using data from an industrial waste heat recovery system. The connection between the turbofan engine and the ORC system was established and evaluated by means of Thrust-Specific Fuel Consumption (TSFC) as well as fuel burn. It was found that the supercritical ORC with a preheater and superheater exhibits lower TSFC than the subcritical ORC, whereas the impact of the ORC in terms of waste heat recovery in relation to the environment and sustainability indices is quite small, but still considerable depending on the engine’s weight. Multidisciplinary Digital Publishing Institute 2020 Article PeerReviewed Saadon, Syamimi and Mohd Nasir, Nur Athirah (2020) Performance and sustainability analysis of an Organic Rankine Cycle system in subcritical and supercritical conditions for waste heat recovery. Energies, 13 (12). art. no. 3035. pp. 1-24. ISSN 1996-1073 https://www.mdpi.com/1996-1073/13/12/3035 10.3390/en13123035
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description This study addresses the performance analysis of a subcritical and supercritical Organic Rankine Cycle (ORC) with the addition of a preheater or superheater integrated with a turbofan engine. This analysis will try to explore the heat transfer throughout the evaporator for the purpose of determining the ORC output power and thermal efficiency. A simplified numerical model of the ORC for waste heat recovery is presented. The model depicts the evaporator by using a distributed model, and includes parameters such as the effectiveness, heat capacity and inlet temperature of the waste heat and the organic fluid. For a given set of initial parameter values, the output power and thermal efficiency, as well as the mass flow rate of the working fluid are acquired by solving the system’s thermodynamic cycle with the aid of MATLAB software. The model is then verified by using data from an industrial waste heat recovery system. The connection between the turbofan engine and the ORC system was established and evaluated by means of Thrust-Specific Fuel Consumption (TSFC) as well as fuel burn. It was found that the supercritical ORC with a preheater and superheater exhibits lower TSFC than the subcritical ORC, whereas the impact of the ORC in terms of waste heat recovery in relation to the environment and sustainability indices is quite small, but still considerable depending on the engine’s weight.
format Article
author Saadon, Syamimi
Mohd Nasir, Nur Athirah
spellingShingle Saadon, Syamimi
Mohd Nasir, Nur Athirah
Performance and sustainability analysis of an Organic Rankine Cycle system in subcritical and supercritical conditions for waste heat recovery
author_facet Saadon, Syamimi
Mohd Nasir, Nur Athirah
author_sort Saadon, Syamimi
title Performance and sustainability analysis of an Organic Rankine Cycle system in subcritical and supercritical conditions for waste heat recovery
title_short Performance and sustainability analysis of an Organic Rankine Cycle system in subcritical and supercritical conditions for waste heat recovery
title_full Performance and sustainability analysis of an Organic Rankine Cycle system in subcritical and supercritical conditions for waste heat recovery
title_fullStr Performance and sustainability analysis of an Organic Rankine Cycle system in subcritical and supercritical conditions for waste heat recovery
title_full_unstemmed Performance and sustainability analysis of an Organic Rankine Cycle system in subcritical and supercritical conditions for waste heat recovery
title_sort performance and sustainability analysis of an organic rankine cycle system in subcritical and supercritical conditions for waste heat recovery
publisher Multidisciplinary Digital Publishing Institute
publishDate 2020
url http://psasir.upm.edu.my/id/eprint/87111/
https://www.mdpi.com/1996-1073/13/12/3035
_version_ 1800093772362547200
score 13.211869

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