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Comparison of the Efficiency of Cross-Flow Plate Heat Exchangers Made of Varied Materials

Author

Listed:
  • Krzysztof Grysa

    (Faculty of Management and Computer Modelling, Kielce University of Technology, 25-314 Kielce, Poland)

  • Artur Maciąg

    (Faculty of Management and Computer Modelling, Kielce University of Technology, 25-314 Kielce, Poland)

  • Artur Ściana

    (Faculty of Management and Computer Modelling, Kielce University of Technology, 25-314 Kielce, Poland)

Abstract

This paper discusses a mathematical model for airflow through a cross-flow plate heat exchanger. The exhaust air is used to heat the supply air. Three kinds of plates are considered: made of aluminium, copper, and steel. The purpose of this research was to verify which material used to build the plate heat exchangers uses the exhaust air heat more efficiently. The method of the Trefftz function was used to determine approximate solutions to the analysed problem. The results obtained for 1.2 mm-thick plates and for external winter, summer, and spring–autumn temperatures are discussed. The results indicate that if the efficiency and price of the metals are considered, then steel is the best material for the plate heat exchanger. Thanks to the use of thin steel plates and the reduction in air exchange time to a few minutes, a cheap and efficient cross-flow heat exchanger can be obtained.

Suggested Citation

  • Krzysztof Grysa & Artur Maciąg & Artur Ściana, 2022. "Comparison of the Efficiency of Cross-Flow Plate Heat Exchangers Made of Varied Materials," Energies, MDPI, vol. 15(22), pages 1-17, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:22:p:8425-:d:969279
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    References listed on IDEAS

    as
    1. Das, Rajat Subhra & Jain, Sanjeev, 2015. "Performance characteristics of cross-flow membrane contactors for liquid desiccant systems," Applied Energy, Elsevier, vol. 141(C), pages 1-11.
    2. Krzysztof Grysa & Artur Maciąg & Artur Ściana, 2021. "Comparison of the Efficiency of Two Types of Heat Exchangers with Parallel Plates Made of Varied Materials," Energies, MDPI, vol. 14(24), pages 1-15, December.
    3. Artur Maciąg & Krzysztof Grysa, 2021. "Trefftz Method of Solving a 1D Coupled Thermoelasticity Problem for One- and Two-Layered Media," Energies, MDPI, vol. 14(12), pages 1-16, June.
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