Comparative assessment of sCO2 cycles, optimal ORC, and thermoelectric generators for exhaust waste heat recovery applications from heavy-duty diesel engines
This study aimed to investigate the potential of supercritical carbon dioxide (sCO2), organic Rankine cycle (ORC), and thermoelectric generator (TEG) systems for application in automotive exhaust waste heat recovery (WHR) applications. More specifically, this paper focuses on heavy-duty diesel engin...
Saved in:
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI
2023
|
Subjects: | |
Online Access: | http://eprints.utm.my/106709/1/SritharRajoo2023_ComparativeAssessmentofsCO2Cycles.pdf http://eprints.utm.my/106709/ http://dx.doi.org/10.3390/en16114339 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.utm.106709 |
---|---|
record_format |
eprints |
spelling |
my.utm.1067092024-07-15T06:53:22Z http://eprints.utm.my/106709/ Comparative assessment of sCO2 cycles, optimal ORC, and thermoelectric generators for exhaust waste heat recovery applications from heavy-duty diesel engines Ahamed, Menaz Pesyridis, Apostolos Saray, Jabraeil Ahbabi Andwari, Amin Mahmoudzadeh Gharehghani, Ayat Rajoo, Srithar TJ Mechanical engineering and machinery This study aimed to investigate the potential of supercritical carbon dioxide (sCO2), organic Rankine cycle (ORC), and thermoelectric generator (TEG) systems for application in automotive exhaust waste heat recovery (WHR) applications. More specifically, this paper focuses on heavy-duty diesel engines applications such as marine, trucks, and locomotives. The results of the simulations show that sCO2 systems are capable of recovering the highest amount of power from exhaust gases, followed by ORC systems. The sCO2 system recovered 19.5 kW at the point of maximum brake power and 10.1 kW at the point of maximum torque. Similarly, the ORC system recovered 14.7 kW at the point of maximum brake power and 7.9 kW at the point of maximum torque. Furthermore, at a point of low power and torque, the sCO2 system recovered 4.2 kW of power and the ORC system recovered 3.3 kW. The TEG system produced significantly less power (533 W at maximum brake power, 126 W at maximum torque, and 7 W at low power and torque) at all three points of interest due to the low system efficiency in comparison to sCO2 and ORC systems. From the results, it can be concluded that sCO2 and ORC systems have the biggest potential impact in exhaust WHR applications provided the availability of heat and that their level of complexity does not become prohibitive. MDPI 2023 Article PeerReviewed application/pdf en http://eprints.utm.my/106709/1/SritharRajoo2023_ComparativeAssessmentofsCO2Cycles.pdf Ahamed, Menaz and Pesyridis, Apostolos and Saray, Jabraeil Ahbabi and Andwari, Amin Mahmoudzadeh and Gharehghani, Ayat and Rajoo, Srithar (2023) Comparative assessment of sCO2 cycles, optimal ORC, and thermoelectric generators for exhaust waste heat recovery applications from heavy-duty diesel engines. Energies, 16 (11). pp. 1-21. ISSN 1996-1073 http://dx.doi.org/10.3390/en16114339 DOI : 10.3390/en16114339 |
institution |
Universiti Teknologi Malaysia |
building |
UTM Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Teknologi Malaysia |
content_source |
UTM Institutional Repository |
url_provider |
http://eprints.utm.my/ |
language |
English |
topic |
TJ Mechanical engineering and machinery |
spellingShingle |
TJ Mechanical engineering and machinery Ahamed, Menaz Pesyridis, Apostolos Saray, Jabraeil Ahbabi Andwari, Amin Mahmoudzadeh Gharehghani, Ayat Rajoo, Srithar Comparative assessment of sCO2 cycles, optimal ORC, and thermoelectric generators for exhaust waste heat recovery applications from heavy-duty diesel engines |
description |
This study aimed to investigate the potential of supercritical carbon dioxide (sCO2), organic Rankine cycle (ORC), and thermoelectric generator (TEG) systems for application in automotive exhaust waste heat recovery (WHR) applications. More specifically, this paper focuses on heavy-duty diesel engines applications such as marine, trucks, and locomotives. The results of the simulations show that sCO2 systems are capable of recovering the highest amount of power from exhaust gases, followed by ORC systems. The sCO2 system recovered 19.5 kW at the point of maximum brake power and 10.1 kW at the point of maximum torque. Similarly, the ORC system recovered 14.7 kW at the point of maximum brake power and 7.9 kW at the point of maximum torque. Furthermore, at a point of low power and torque, the sCO2 system recovered 4.2 kW of power and the ORC system recovered 3.3 kW. The TEG system produced significantly less power (533 W at maximum brake power, 126 W at maximum torque, and 7 W at low power and torque) at all three points of interest due to the low system efficiency in comparison to sCO2 and ORC systems. From the results, it can be concluded that sCO2 and ORC systems have the biggest potential impact in exhaust WHR applications provided the availability of heat and that their level of complexity does not become prohibitive. |
format |
Article |
author |
Ahamed, Menaz Pesyridis, Apostolos Saray, Jabraeil Ahbabi Andwari, Amin Mahmoudzadeh Gharehghani, Ayat Rajoo, Srithar |
author_facet |
Ahamed, Menaz Pesyridis, Apostolos Saray, Jabraeil Ahbabi Andwari, Amin Mahmoudzadeh Gharehghani, Ayat Rajoo, Srithar |
author_sort |
Ahamed, Menaz |
title |
Comparative assessment of sCO2 cycles, optimal ORC, and thermoelectric generators for exhaust waste heat recovery applications from heavy-duty diesel engines |
title_short |
Comparative assessment of sCO2 cycles, optimal ORC, and thermoelectric generators for exhaust waste heat recovery applications from heavy-duty diesel engines |
title_full |
Comparative assessment of sCO2 cycles, optimal ORC, and thermoelectric generators for exhaust waste heat recovery applications from heavy-duty diesel engines |
title_fullStr |
Comparative assessment of sCO2 cycles, optimal ORC, and thermoelectric generators for exhaust waste heat recovery applications from heavy-duty diesel engines |
title_full_unstemmed |
Comparative assessment of sCO2 cycles, optimal ORC, and thermoelectric generators for exhaust waste heat recovery applications from heavy-duty diesel engines |
title_sort |
comparative assessment of sco2 cycles, optimal orc, and thermoelectric generators for exhaust waste heat recovery applications from heavy-duty diesel engines |
publisher |
MDPI |
publishDate |
2023 |
url |
http://eprints.utm.my/106709/1/SritharRajoo2023_ComparativeAssessmentofsCO2Cycles.pdf http://eprints.utm.my/106709/ http://dx.doi.org/10.3390/en16114339 |
_version_ |
1805880855861657600 |
score |
13.209306 |