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Evaluation of monolithic and segmented thermoelectric materials using a potentiometer-type high-accuracy Generator Test Facility

Stiewe, Christian and Karpinski, Gabriele and Platzek, Dieter and Kaibe, Hiromasa T. and Müller, Eckhard (2005) Evaluation of monolithic and segmented thermoelectric materials using a potentiometer-type high-accuracy Generator Test Facility. In: Proc. 24th Int. Conf. on Thermoelectrics (ICT 2005), pp. 513-516. Institute of Electrical and Electronics Engineers, Inc.. ICT 2005 - 24th Int. Conf. on Thermoelectrics, 2005-06-19 - 2005-06-23, Clemson, SC (USA). ISBN 0-7803-9552-1. ISSN 1094-2734.

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Official URL: http://ieeexplore.ieee.org


A facility for investigating the thermal and electrical properties of a thermoelectric generator in an environment close to reality and the thermal resistance of multi-layer specimen has been constructed at DLR. Quantities such as output power and efficiency, output voltage and current, inner resistance, and overall thermal conductance can be determined under vacuum or inert gas, but also in oxidising atmosphere. The heat flow through the generator is measured via the temperature gradient in a reference block at the hot side. The cold side heat flux is measured by a commercial heat flux meter, a second reference block or a combination of both. This redundant measurement provides a sensitive indicator for systematic errors caused by incomplete thermal shielding which would lead to thermal bypasses. Comparison of our generator tests a comparison with by a similar apparatus at another institution gives evidence for good measuring accuracy. The relative error of the resulting parameters is in the range of 5%. The method of heat flow detection in the GTF can also be used for thermal resistance investigations, especially on multi-layer systems of too low thermal conductivities for appropriate measurements by Laser Flash.

Item URL in elib:https://elib.dlr.de/21420/
Document Type:Conference or Workshop Item (Paper, Poster)
Title:Evaluation of monolithic and segmented thermoelectric materials using a potentiometer-type high-accuracy Generator Test Facility
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kaibe, Hiromasa T.Komatsu Ltd., JapanUNSPECIFIED
Date:November 2005
Journal or Publication Title:Proc. 24th Int. Conf. on Thermoelectrics (ICT 2005)
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 513-516
EditorsEmailEditor's ORCID iD
Publisher:Institute of Electrical and Electronics Engineers, Inc.
Keywords:thermoelectric devices, thermogenerator test facility, efficiency, figure of merit, inner resistance, module testing, segmented elements, heat transfer
Event Title:ICT 2005 - 24th Int. Conf. on Thermoelectrics
Event Location:Clemson, SC (USA)
Event Type:international Conference
Event Dates:2005-06-19 - 2005-06-23
Organizer:Clemson University, Dept. of Physics and Astronomy
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation Methods (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Structural and Functional Ceramics
Deposited By: Müller, Dr.phys. Wolf Eckhard
Deposited On:23 Jan 2006
Last Modified:27 Apr 2009 04:55

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