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Cost-effective waste heat recovery using thermoelectric systems

  • Kazuaki Yazawa (a1) and Ali Shakouri (a2)

Abstract

Optimizing thermoelectric (TE) materials and modules are important factors, which can lead to widespread adoption of waste heat recovery systems. The analytic co-optimization of the TE leg, heat sink, and the load resistance shows that all parameters entering the figure-of-merit (Z) do not have the same impact on cost/performance trade-off. Thermal conductivity of the TE material plays a more important role than the power factor. This study also explores the impact of heat losses and the required contact resistances. Finally, we present the theoretical cost performance ($/W) of TE waste heat recovery systems for vehicle waste heat recovery application, assuming hot side gas temperature of 600 °C and a cooling water temperature of 60 °C.

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Corresponding author

a)Address all correspondence to these authors. e-mail: kaz@soe.ucsc.edu

References

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