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

Górecki, Grzegorz; Łęcki, Marcin; Gutkowski, Artur Norbert; Andrzejewski, Dariusz; Warwas, Bartosz; Kowalczyk, Michał; Romaniak, Artur

doi:10.3390/en14175317

Open AccessArticle

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

by

Grzegorz Górecki

^*,

Marcin Łęcki

,

Artur Norbert Gutkowski

,

Dariusz Andrzejewski

,

Bartosz Warwas

,

Michał Kowalczyk

and

Artur Romaniak

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

^*

Author to whom correspondence should be addressed.

Energies 2021, 14(17), 5317; https://doi.org/10.3390/en14175317

Submission received: 9 July 2021 / Revised: 18 August 2021 / Accepted: 21 August 2021 / Published: 27 August 2021

(This article belongs to the Special Issue Numerical Heat Transfer and Fluid Flow 2021)

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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 m³/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%.

Keywords: heat pipe heat exchanger; wickless heat pipe; heat transfer; individually finned tubes

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MDPI and ACS Style

Górecki, G.; Łęcki, M.; Gutkowski, A.N.; Andrzejewski, D.; Warwas, B.; Kowalczyk, M.; Romaniak, A. Experimental and Numerical Study of Heat Pipe Heat Exchanger with Individually Finned Heat Pipes. Energies 2021, 14, 5317. https://doi.org/10.3390/en14175317

AMA Style

Górecki G, Łęcki M, Gutkowski AN, Andrzejewski D, Warwas B, Kowalczyk M, Romaniak A. Experimental and Numerical Study of Heat Pipe Heat Exchanger with Individually Finned Heat Pipes. Energies. 2021; 14(17):5317. https://doi.org/10.3390/en14175317

Chicago/Turabian Style

Górecki, Grzegorz, Marcin Łęcki, Artur Norbert Gutkowski, Dariusz Andrzejewski, Bartosz Warwas, Michał Kowalczyk, and Artur Romaniak. 2021. "Experimental and Numerical Study of Heat Pipe Heat Exchanger with Individually Finned Heat Pipes" Energies 14, no. 17: 5317. https://doi.org/10.3390/en14175317

APA Style

Górecki, G., Łęcki, M., Gutkowski, A. N., Andrzejewski, D., Warwas, B., Kowalczyk, M., & Romaniak, A. (2021). Experimental and Numerical Study of Heat Pipe Heat Exchanger with Individually Finned Heat Pipes. Energies, 14(17), 5317. https://doi.org/10.3390/en14175317

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

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