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Transient response and Green's function technique

Seifert, Wolfgang and Zabrocki, Knud and Achilles, Steven and Trimper, Steffen (2016) Transient response and Green's function technique. In: Continuum theory and modeling of thermoelectric elements Wiley-VCH. pp. 177-226.

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/9783527338405.ch4/summary

Abstract

This chapter highlights the aspects of transient operation and measurements of thermoelectric (TE) materials and systems. If the timescale of changes in the working or boundary conditions is much greater than the response time of the TE system, a quasi-stationary approach is suitable to describe the transient behavior of the system. A dynamically switched TE cooler can be used to suppress hotspots in electronic chips. Supercooling is reached because there is a temporal and spatial interplay between Peltier cooling (mainly at an interface) and Joule heating as a volume effect. The chapter discusses two different methods for the dynamical determination of the thermal conductivity, namely laser flash analysis and classical Ioffe method. It also demonstrates how the Green's function technique works in the classical theory of thermoelectricity. In addition, the chapter provides the solution to the general formulation of time-dependent heat equation using the reciprocity property and adjoint Green's function.

Item URL in elib:https://elib.dlr.de/108723/
Document Type:Book Section
Title:Transient response and Green's function technique
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Seifert, WolfgangUniversity Halle-Wittenberg, Institute of Physics – Theoretical Physics, Von-Seckendorff-Platz 1, 06120 Halle (Saale), GermanyUNSPECIFIED
Zabrocki, KnudInstitute of Materials Research, German Aerospace Center (DLR), Institute of Materials Research – Thermoelectric Materials and Systems, Linder Höhe, 51147 Köln Porz-Wahnheide, GermanyUNSPECIFIED
Achilles, StevenUniversity Halle-Wittenberg, Institute of Physics – Theoretical Physics, Von-Seckendorff-Platz 1, 06120 Halle (Saale), GermanyUNSPECIFIED
Trimper, SteffenUniversity Halle-Wittenberg, Institute of Physics – Theoretical Physics, Von-Seckendorff-Platz 1, 06120 Halle (Saale), GermanyUNSPECIFIED
Date:January 2016
Journal or Publication Title:Continuum theory and modeling of thermoelectric elements
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.1002/9783527338405.ch4
Page Range:pp. 177-226
Publisher:Wiley-VCH
Status:Published
Keywords:classical Ioffe method; laser flash analysis; quasi-stationary processes; supercooling; thermal conductivity; thermoelectric generator; thermoelectricity; time-dependent Green's function technique; transient Peltier cooler
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Turbine Technologies
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Zabrocki, Dr. Knud
Deposited On:05 Dec 2016 07:32
Last Modified:05 Dec 2016 07:32

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