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Journal of Electronic Materials

, Volume 45, Issue 3, pp 1517–1522 | Cite as

The Influence of a Dispersion Cone on the Temperature Distribution in the Heat Exchanger of a Thermoelectric Generator

  • M. MusiaŁEmail author
  • M. Borcuch
  • K. Wojciechowski
Article

Abstract

This paper presents the results of a numerical simulation of heat distribution in the heat exchanger of a prototype thermoelectric generator constructed and examined in the Thermoelectric Research Laboratory in AGH University, Cracow, Poland. The area of interest was to prepare a numerical model and determine the influence of a dispersion cone on the temperature distribution along the heat exchanger. The role of a dispersion element is to mix the air stream to improve the flow between the internal heat exchanger’s fins in order to enhance heat exchange. The estimation of power output parameters and exchanger efficiency has been performed in order to assess the cone impact for three selected air inlet temperatures. The results show that the presence of the cone increases the efficiency of the thermoelectric generator by at least 25%.

Keywords

Thermoelectric generator heat exchanger CFD waste heat recovery 

List of symbols

Variables

P

Electrical power (W)

PR

Power ratio (–)

Ropt

Optimum module electrical resistance (Ω)

Tin

Air inlet temperature (K)

Tout

Air outlet temperature (K)

TH

Module hot side temperature (K)

TC

Module cold side temperature (K)

Ti

Hot side temperature at position i (K)

U

Output voltage (V)

α

Seebeck coefficient (V K−1)

ΔT

T H – T C

ηe

Heat exchanger efficiency

Abbreviations

CF

Model with the cone at the front of the heat exchanger

CB

Model with the cone at the back of the heat exchanger

WC

Model without cone

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Copyright information

© The Minerals, Metals & Materials Society 2015

Authors and Affiliations

  1. 1.Department of Thermal Engineering and Fluid Flow, Faculty of Energy and FuelsAGH University of Science and TechnologyCracowPoland
  2. 2.Thermoelectric Research Laboratory, Faculty of Materials Science and CeramicsAGH University of Science and TechnologyCracowPoland

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