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Heat Transfer Characteristics of Thermoelectric Generator System for Waste Heat Recovery from a Billet Casting Process: Experimental and Numerical Analysis

Author

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  • Saurabh Yadav

    (School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan-si, Gyeongsangbuk-do 38541, Korea)

  • Jie Liu

    (School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan-si, Gyeongsangbuk-do 38541, Korea)

  • Man Sik Kong

    (Institute of Advanced Engineering, 175-28, Goan-ro 51, Yongin-si, Gyeonggi-do 17180, Korea)

  • Young Gyoon Yoon

    (Livingcare Development of Materials, 166, Gosan-ro, Gunpo-si, Gyonggi-do 15850, Korea)

  • Sung Chul Kim

    (School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan-si, Gyeongsangbuk-do 38541, Korea)

Abstract

In this study, experiments were performed to use the waste heat in a billet casting industry utilizing bismuth telluride thermoelectric generators (TEGs). Four d-type absorber plates made of copper were installed above the manufactured billet during the cooling process. Three sides of each absorber plate were attached to thermoelectric units. Therefore, a total of 12 units of the thermoelectric system were found to generate a power of 339 W. The power density of the TEG system was found to be 981 W/m 2 while running the system at the operating voltage of the battery energy storage system (58 V). A one-dimensional numerical simulation was carried out using FloMASTER TM v9.1 (Mentor Graphics Corporation, Siemens, Dallas, TX, USA) to verify the experimental results, and the numerical results were found to exhibit good agreement with the experimental results. Furthermore, a one-dimensional numerical simulation was carried out to obtain the heat transfer characteristics at varying flow rates of cold water (Reynolds number = 2540–16,943) and at different inlet temperatures (10–25 °C) for the cold side of the TEG. The results indicate that the performance of the thermoelectric generator increases with an increase in the cold-water flow rate and a decrease in the inlet temperature of the cold water.

Suggested Citation

  • Saurabh Yadav & Jie Liu & Man Sik Kong & Young Gyoon Yoon & Sung Chul Kim, 2021. "Heat Transfer Characteristics of Thermoelectric Generator System for Waste Heat Recovery from a Billet Casting Process: Experimental and Numerical Analysis," Energies, MDPI, vol. 14(3), pages 1-18, January.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:3:p:601-:d:486850
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    References listed on IDEAS

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    Cited by:

    1. Jie Liu & Ki-Yeol Shin & Sung Chul Kim, 2022. "Comparison and Parametric Analysis of Thermoelectric Generator System for Industrial Waste Heat Recovery with Three Types of Heat Sinks: Numerical Study," Energies, MDPI, vol. 15(17), pages 1-16, August.

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