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Numerical and Experimental Study of Air-to-Air Plate Heat Exchangers with Plain and Offset Strip Fin Shapes

Author

Listed:
  • Kyung Rae Kim

    (LG Electronics, 170, Seongsanpaechong-ro, Changwon-si, Gyeongsangnam-do 51533, Korea)

  • Jae Keun Lee

    (Ecoenergy Research Institute, 2323 Daejeo-dong, Kangseo-gu, Busan 46703, Korea)

  • Hae Do Jeong

    (School of Mechanical Engineering, Pusan National University, Busan 46241, Korea)

  • Yul Ho Kang

    (Research Institute for Future Wind Energy Technology, Pusan National University, Busan 46241, Korea)

  • Young Chull Ahn

    (School of Architectural Engineering, Pusan National University, Busan 46241, Korea)

Abstract

This study evaluates the performance of a plate heat exchanger numerically and experimentally. The predictive model for estimating the heat transfer and frictional pressure drop across the plain and offset strip fins is compared with the experimental results with the parameters of Reynolds number and fin pitch. The heat transfer of the offset fin shape is 13.4% higher than that of the plain fin in the experiment in the case of Re = 6112 for the hot airflow and Re = 2257 for the cold airflow. A predictive model uses the effectiveness-Number of Transfer Units (NTU) method with the discretization in the segments divided into small control volumes in the heat exchanger. The difference of heat transfer and pressure drop for the plain fin between the numerical and the experimental results are approximately 1.9% and 5.9%, respectively. Thus, the results indicate that the predictive model for estimating the heat transfer is useful for evaluating the performance of the plate heat exchanger in the laminar-to-transition regions.

Suggested Citation

  • Kyung Rae Kim & Jae Keun Lee & Hae Do Jeong & Yul Ho Kang & Young Chull Ahn, 2020. "Numerical and Experimental Study of Air-to-Air Plate Heat Exchangers with Plain and Offset Strip Fin Shapes," Energies, MDPI, vol. 13(21), pages 1-13, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:21:p:5710-:d:438487
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    References listed on IDEAS

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    1. Arkadiusz Brenk & Pawel Pluszka & Ziemowit Malecha, 2018. "Numerical Study of Flow Maldistribution in Multi-Plate Heat Exchangers Based on Robust 2D Model," Energies, MDPI, vol. 11(11), pages 1-17, November.
    2. Xiang Peng & Denghong Li & Jiquan Li & Shaofei Jiang & Qilong Gao, 2020. "Improvement of Flow Distribution by New Inlet Header Configuration with Splitter Plates for Plate-Fin Heat Exchanger," Energies, MDPI, vol. 13(6), pages 1-14, March.
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    Cited by:

    1. Ewa Zender–Świercz, 2021. "A Review of Heat Recovery in Ventilation," Energies, MDPI, vol. 14(6), pages 1-23, March.
    2. Tarun Kumar Aseri & Chandan Sharma & Tara C. Kandpal, 2022. "Condenser cooling technologies for concentrating solar power plants: a review," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 24(4), pages 4511-4565, April.
    3. García-Castillo, Jorge L. & Picón-Núñez, Martín & Abu-Khader, Mazen M., 2022. "Improving the prediction of the thermohydraulic performance of secondary surfaces and its application in heat recovery processes," Energy, Elsevier, vol. 261(PB).

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