Electrostatic Potential and Temperature Distribution in Case of a Series and a Parallel Configuration of Two Thermoelectric Conversion Phases

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  • 二つの熱電変換相が直列及び並列に配置された場合の電位及び温度分布
  • Electrostatic Potential and Temperature

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Abstract

As a first step to clarify the influence of Peltier effect on the temperature and electrostatic potential distributions as well as heat and electric current flow in a composite thermoelectric material, basic equations to describe the heat and electric current have been numerically solved for typical configurations of two thermoelectric energy conversion materials, a series and a parallel configuration. Above distributions and flows have been visualized for several dimensionless coefficients related to thermoelectricity. Peltier effect brings about less energy conversion efficiency in case of a series configuration of the phases with different Seebeck coefficients from each other than that in case of a parallel configuration. When no electric current is taken out from a composite thermoelectric material, Seebeck coefficients of the materials of a series and a parallel configuration are the same and given by the volume average of those of composing materials, as is expected.

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