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Simulations for the Development of Thermoelectric Measurements

Zabrocki, Knud und Ziolkowski, Pawel und Dasgupta, Titas und de Boor , Johannes und Müller, Eckhard (2013) Simulations for the Development of Thermoelectric Measurements. Journal of Electronic Materials, 42 (7), Seiten 2402-2408. Springer. doi: 10.1007/s11664-013-2579-y. ISSN 0361-5235.

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Kurzfassung

In thermoelectricity, continuum theoretical equations are usually used for the calculation of the characteristics and performance of thermoelectric elements, modules or devices as a function of external parameters (material, geometry, temperatures, current, flow, load, etc.). An increasing number of commercial software packages aimed at applications, such as COMSOL and ANSYS, contain vkernels using direct thermoelectric coupling. Application of these numerical tools also allows analysis of physical measurement conditions and can lead to specifically adapted methods for developing special test equipment required for the determination of TE material and module properties. System-theoretical and simulation-based considerations of favorable geometries are taken into account to create draft sketches in the development of such measurement systems. Particular consideration is given to the development of transient measurement methods, which have great advantages compared with the conventional static methods in terms of the measurement duration required. In this paper the benefits of using numerical tools in designing measurement facilities are shown using two examples. The first is the determination of geometric correction factors in four-point probe measurement of electrical conductivity, whereas the second example is focused on the so-called combined thermoelectric measurement (CTEM) system, where all thermoelectric material properties (Seebeck coefficient, electrical and thermal conductivity, and Harman measurement of zT) are measured in a combined way. Here, we want to highlight especially the measurement of thermal conductivity in a transient mode. Factors influencing the measurement results such as coupling to the environment due to radiation, heat losses via the mounting of the probe head, as well as contact resistance between the sample and sample holder are illustrated, analyzed, and discussed. By employing the results of the simulations, we have developed an improved sample head that allows for measurements over a larger temperature interval with enhanced accuracy.

elib-URL des Eintrags:https://elib.dlr.de/85807/
Dokumentart:Zeitschriftenbeitrag
Titel:Simulations for the Development of Thermoelectric Measurements
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Zabrocki, KnudGerman Aerospace Center, Institute of Materials Research, Köln, GermanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Ziolkowski, PawelGerman Aerospace Center, Institute of Materials Research, Köln, GermanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Dasgupta, TitasGerman Aerospace Center, Institute of Materials Research, Köln, GermanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
de Boor , JohannesGerman Aerospace Center, Institute of Materials Research, Köln, GermanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Müller, EckhardGerman Aerospace Center, Institute of Materials Research, Köln, GermanyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:1 Mai 2013
Erschienen in:Journal of Electronic Materials
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:42
DOI:10.1007/s11664-013-2579-y
Seitenbereich:Seiten 2402-2408
Verlag:Springer
ISSN:0361-5235
Status:veröffentlicht
Stichwörter:Measurement of thermoelectric properties electrical resistivity/conductivity measurement error correction finite-element modeling ANSYS
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Verkehr
HGF - Programmthema:Bodengebundener Verkehr (alt)
DLR - Schwerpunkt:Verkehr
DLR - Forschungsgebiet:V BF - Bodengebundene Fahrzeuge
DLR - Teilgebiet (Projekt, Vorhaben):V - Projekt Fahrzeugenergiesysteme III (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Werkstoff-Forschung > Thermoelektrische Materialien und Systeme
Hinterlegt von: Zabrocki, Dr. Knud
Hinterlegt am:27 Nov 2013 14:35
Letzte Änderung:29 Nov 2023 12:14

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