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Exploring the potential for waste heat recovery during metal casting with thermoelectric generators: On-site experiments and mathematical modeling

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  • Børset, Marit Takla
  • Wilhelmsen, Øivind
  • Kjelstrup, Signe
  • Burheim, Odne Stokke

Abstract

Thermoelectric power generators are scalable and simple systems for recovering waste-heat disposed by the industry. We combine on-site measurements and a mathematical model to study the potential for power generation with this technology from heat available from casting of silicon. We implement a 0.25 m2 thermoelectric generator (TEG), based on bismuth-tellurium modules, in the casting area of a silicon plant. The measured peak power is 160 W m−2 and the corresponding maximum temperature difference across the modules is 100 K. We predict a large potential to increase the power generated beyond the measured values. For a two-fold increase of the heat transfer coefficient at the cold side, and by moving the generator closer to the heat source, we predict that the power output can reach 900 W m−2. By tailoring the design of the TEG to the conditions encountered in the industrial facility, it is possible to generate more power with less thermoelectric material. We provide guidelines on how to design thermoelectric systems to maximize the power generation from waste heat given off from silicon during casting.

Suggested Citation

  • Børset, Marit Takla & Wilhelmsen, Øivind & Kjelstrup, Signe & Burheim, Odne Stokke, 2017. "Exploring the potential for waste heat recovery during metal casting with thermoelectric generators: On-site experiments and mathematical modeling," Energy, Elsevier, vol. 118(C), pages 865-875.
    • Handle: RePEc:eee:energy:v:118:y:2017:i:c:p:865-875
    DOI: 10.1016/j.energy.2016.10.109
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    Cited by:

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    3. Liu, Xinxin & Wang, Ke & Shen, Zuguo, 2024. "A novel strategy of inserting radiation shields to enhance the performance of thermoelectric generator systems for industrial high-temperature heat recovery," Energy, Elsevier, vol. 301(C).
    4. Zhang, Xin & Cai, Ling & Liao, Tianjun & Zhou, Yinghui & Zhao, Yingru & Chen, Jincan, 2018. "Exploiting the waste heat from an alkaline fuel cell via electrochemical cycles," Energy, Elsevier, vol. 142(C), pages 983-990.
    5. Torbjørn Pettersen & Emil Dæhlin & Per Anders Eidem & Olaf Trygve Berglihn, 2020. "Investigating the Potential for Increased Energy Utilisation and Reduced CO 2 Emissions at Mo Industrial Park," Energies, MDPI, vol. 13(18), pages 1-23, September.
    6. 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.
    7. Miguel Araiz & Álvaro Casi & Leyre Catalán & Patricia Aranguren & David Astrain, 2021. "Thermoelectric Generator with Passive Biphasic Thermosyphon Heat Exchanger for Waste Heat Recovery: Design and Experimentation," Energies, MDPI, vol. 14(18), pages 1-19, September.
    8. Deasy, M.J. & Baudin, N. & O'Shaughnessy, S.M. & Robinson, A.J., 2017. "Simulation-driven design of a passive liquid cooling system for a thermoelectric generator," Applied Energy, Elsevier, vol. 205(C), pages 499-510.
    9. Merienne, R. & Lynn, J. & McSweeney, E. & O'Shaughnessy, S.M., 2019. "Thermal cycling of thermoelectric generators: The effect of heating rate," Applied Energy, Elsevier, vol. 237(C), pages 671-681.
    10. Lan, Yuncheng & Lu, Junhui & Li, Junming & Wang, Suilin, 2022. "Effects of temperature-dependent thermal properties and the side leg heat dissipation on the performance of the thermoelectric generator," Energy, Elsevier, vol. 243(C).
    11. 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.

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