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Experimental and Numerical Study of Heat Pipe Heat Exchanger with Individually Finned Heat Pipes

Author

Listed:
  • Grzegorz Górecki

    (Faculty of Mechanical Engineering, Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Street, 90-924 Lodz, Poland)

  • Marcin Łęcki

    (Faculty of Mechanical Engineering, Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Street, 90-924 Lodz, Poland)

  • Artur Norbert Gutkowski

    (Faculty of Mechanical Engineering, Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Street, 90-924 Lodz, Poland)

  • Dariusz Andrzejewski

    (Faculty of Mechanical Engineering, Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Street, 90-924 Lodz, Poland)

  • Bartosz Warwas

    (Faculty of Mechanical Engineering, Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Street, 90-924 Lodz, Poland)

  • Michał Kowalczyk

    (Faculty of Mechanical Engineering, Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Street, 90-924 Lodz, Poland)

  • Artur Romaniak

    (Faculty of Mechanical Engineering, Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Street, 90-924 Lodz, Poland)

Abstract

The present study is devoted to the modeling, design, and experimental study of a heat pipe heat exchanger utilized as a recuperator in small air conditioning systems (airflow ≈ 300–500 m 3 /h), comprised of individually finned heat pipes. A thermal heat pipe heat exchanger model was developed, based on available correlations. Based on the previous experimental works of authors, refrigerant R404A was recognized as the best working fluid with a 20% heat pipe filling ratio. An engineering analysis of parametric calculations performed with the aid of the computational model concluded 20 rows of finned heat pipes in the staggered arrangement as a guarantee of stable heat exchanger effectiveness ≈ 60%. The optimization of the overall cost function by the “brute-force” method has backed up the choice of the best heat exchanger parameters. The 0.05 m traversal (finned pipes in contact with each other) and 0.062 m longitudinal distance were optimized to maximize effectiveness (up to 66%) and minimize pressure drop (less than 150 Pa). The designed heat exchanger was constructed and tested on the experimental rig. The experimental data yielded a good level of agreement with the model—relative difference within 10%.

Suggested Citation

  • Grzegorz Górecki & Marcin Łęcki & Artur Norbert Gutkowski & Dariusz Andrzejewski & Bartosz Warwas & Michał Kowalczyk & Artur Romaniak, 2021. "Experimental and Numerical Study of Heat Pipe Heat Exchanger with Individually Finned Heat Pipes," Energies, MDPI, vol. 14(17), pages 1-26, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:17:p:5317-:d:623122
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    References listed on IDEAS

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    Cited by:

    1. Artur S. Bartosik, 2022. "Numerical Heat Transfer and Fluid Flow: A Review of Contributions to the Special Issue," Energies, MDPI, vol. 15(8), pages 1-8, April.

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