Internal convection in thermoelectric generator models

Details Internal convection in thermoelectric generator models Internal convection in thermoelectric generator models

2012-04-03

arxiv.org/abs/1204.0737v1

Physics

Condensed Matter

Materials Science

8 pages, 3 figures

Scientific paper

Coupling between heat and electrical currents is at the heart of thermoelectric processes. From a thermal viewpoint this may be seen as an additional thermal flux linked to the appearance of electrical current in a given thermoelectric system. Since this additional flux is associated to the global displacement of charge carriers in the system, it can be qualified as convective in opposition to the conductive part associated with both phonons transport and heat transport by electrons under open circuit condition, as, e.g., in the Wiedemann-Franz relation. In this article we demonstrate that considering the convective part of the thermal flux allows both new insight into the thermoelectric energy conversion and the derivation of the maximum power condition for generators with realistic thermal coupling.

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