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Effect of the Fin Density on the Thermal Performance of a Finned-Tube Heat Exchanger Loaded with a Paraffinic PCM

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Abstract:

In this paper, we analyze the thermal performance of a Latent Thermal Energy Storage (LTES) system prototype, consisting of a finned-tube heat exchanger immersed in the paraffinic Phase Change Material (PCM) RT50. With the aim of demonstrating the influence of the fin density on the system thermal performance, experimental tests were conducted by varying the fin pitch while maintaining constant the Heat Transfer Fluid (HTF) operating conditions (i.e., mass flow rate and inlet temperature). The experimental findings indicate that increasing the fin density significantly reduces the charging and discharging process durations up to approximately 5-10 times, consequently improving the average heat transfer rate between the HTF and the PCM.

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Periodical:

Defect and Diffusion Forum (Volume 445)

Pages:

179-188

DOI:

https://doi.org/10.4028/p-OUEFo5

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Online since:

December 2025

Authors:

Gabriella Adele D'Errico, Giulia Martino, Claudia Naldi*, Matteo Dongellini, Filippo Azzini, Cesare Biserni, Gian Luca Morini

Keywords:

Experimental Analysis, Finned-Tube Heat Exchanger, Latent Thermal Energy Storage, Phase Change Materials, Thermal Performance

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

References

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