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Structural Optimization of Heat Sink for Thermoelectric Conversion Unit in Personal Comfort System

Author

Listed:
  • Wenping Xue

    (School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Xiao Cao

    (School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Guangfa Zhang

    (School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Gang Tan

    (Department of Civil and Architectural Engineering, University of Wyoming, Laramie, WY 82071, USA)

  • Zilong Liu

    (School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Kangji Li

    (School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China)

Abstract

Based on the research background of improving personal thermal comfort and promoting building energy efficiency, personal comfort systems (PCSs) have recently received considerable attention. The thermoelectric conversion unit (TECU) has great potential in PCSs as it is compact in size, environmentally friendly and highly reliable. Aiming to improve heat exchange efficiency, this paper investigates the structural optimization of heat sink for the TECU used in PCSs. Firstly, the heat exchange mechanism of the thermoelectric module is analyzed. The structural design of the cold-side heat sink in the TECU is summarized as a multiobjective optimization problem in which four structural parameters (number of fin rows, fin thickness, fin height and thickness of base) of the heat sink are selected as the adjusting variables. Then, based on the establishment of the cold-side computational fluid dynamics simulation model, a multiobjective genetic algorithm is utilized for the optimization task. Sensitivity analysis demonstrates that the number of rows and the fin thickness have significant influence on the optimization objectives. Taking both the outlet airflow temperature and the velocity into consideration, five representative heat sinks involving two different materials are customized. A testing platform is built for performance comparison. Results show that the proposed optimization method can effectively improve the heat exchange efficiency of a TECU, which provides a reference for the TECU-based PCS design.

Suggested Citation

  • Wenping Xue & Xiao Cao & Guangfa Zhang & Gang Tan & Zilong Liu & Kangji Li, 2022. "Structural Optimization of Heat Sink for Thermoelectric Conversion Unit in Personal Comfort System," Energies, MDPI, vol. 15(8), pages 1-16, April.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:8:p:2781-:d:791152
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    References listed on IDEAS

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