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Parametric study of a thermoelectric generator system for exhaust gas energy recovery in diesel road freight transportation

Vale, Sónia and Heber, Lars and Coelho, P J and Silva, C M (2016) Parametric study of a thermoelectric generator system for exhaust gas energy recovery in diesel road freight transportation. Energy Conversion and Management, 133 (1), pp. 167-177. Elsevier. DOI: 10.1016/j.enconman.2016.11.064 ISSN 0196-8904

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Official URL: http://www.sciencedirect.com/science/article/pii/S0196890416310731


A parametric study and optimization approaches of a thermoelectric generator (TEG) for the recovery of energy from the exhaust gas in Diesel vehicles used in freight transport is reported. The TEG is installed in the tailpipe of a commercial vehicle (3.5 tonnes) and a heavy-duty vehicle (40 tonnes). The exhaust gas is used as the heat source and the cooling water as the heat sink. Two different heat exchanger configurations are considered: plain fins and offset strip fins. The influence of the height, length and spacing of the fins on the electrical and net power is analysed for the fixed width and length of the TEG. The influence of the length and width of the TEG and of the height of the thermocouple legs is also investigated. According to the criteria used in this study, plain fins are the best choice, yielding a maximum electrical power of 188 W for the commercial vehicle and 886 W for the heavy-duty vehicle. The best recovery efficiency is about 2%, with an average thermoelectric material efficiency of approximately 4.4%, for the light-duty vehicle. Accordingly, there is significant room for further improvement and optimisation based on the thermoelectric modules and the system design.

Item URL in elib:https://elib.dlr.de/109863/
Document Type:Article
Title:Parametric study of a thermoelectric generator system for exhaust gas energy recovery in diesel road freight transportation
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Vale, SóniaDLR Institut für FahrzuegkonzepteUNSPECIFIED
Heber, Larslars.heber (at) dlr.dehttps://orcid.org/0000-0001-5077-0984
Coelho, P JInstituto Superior Técnico, Universidade de Lisboa, PortugalUNSPECIFIED
Silva, C MFaculdade de Ciências, Universidade de Lisboa, PortugalUNSPECIFIED
Journal or Publication Title:Energy Conversion and Management
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.enconman.2016.11.064
Page Range:pp. 167-177
Series Name:Elsevier Energy Conversion and Management
Keywords:Energierückgewinnung, Thermoelektrischer Generator, Abwärmenutzung für Fahrzeuge mit Dieselmotor.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - NGC-Antriebsstrang (old)
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts > Alternative Energiewandler
Deposited By: Heber, Lars
Deposited On:10 Jan 2017 17:44
Last Modified:06 Sep 2019 15:20

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