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Analysis of Thermoelectric Generator Performance by Use of Simulations and Experiments

Olle Högblom (Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik ; Kompetenscentrum katalys (KCK)) ; Ronnie Andersson (Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik ; Kompetenscentrum katalys (KCK) ; Institutionen för kemi- och bioteknik, Kemisk apparatteknik)
Journal of Electronic Materials (0361-5235). Vol. 43 (2014), 6, p. 2247-2254.
[Artikel, refereegranskad vetenskaplig]

A method that enables accurate determination of contact resistances in thermoelectric generators and which gives detailed insight into how these reduce module performance is presented in this paper. To understand the importance taking thermal and electrical contact resistances into account in analysis of thermoelectric generators, full-scale modules were studied. Contact resistances were determined by means of non-linear regression analysis on the basis of results from 3D finite element simulations and experiments in a setup in which heat flow, voltage, and current were measured. Statistical evaluation showed that the model and the identified contact resistances enabled excellent prediction of performance over the entire range of operating conditions. It was shown that if contact resistances were not included in the analysis the simulations significantly over-predicted both heat flow and electric power output, and it was concluded that contact resistance should always be included in module simulations. The method presented in this paper gives detailed insight into how thermoelectric modules perform in general, and also enables prediction of potential improvement in module performance by reduction of contact resistances.

Nyckelord: Thermoelectric modeling; thermal contact resistance; electrical contact resistance



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Denna post skapades 2014-07-08. Senast ändrad 2016-11-17.
CPL Pubid: 200282

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik (2005-2014)
Kompetenscentrum katalys (KCK)
Institutionen för kemi- och bioteknik, Kemisk apparatteknik (2005-2014)

Ämnesområden

Transport
Hållbar utveckling
Kemiteknik

Chalmers infrastruktur

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