Analysis of Enhanced Pool Boiling Heat Transfer on Laser—Textured Surfaces

Enhancement of pool boiling heat transfer can be attained with a number of passive and active techniques. The paper experimentally analyses the impact of laser treatment of the copper surfaces on pool boiling heat transfer of distilled water and ethyl alcohol. The samples were modified with a laser...

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Published in:Energies (Basel) 2020-06, Vol.13 (11), p.2700
Main Authors: Orman, Łukasz J., Radek, Norbert, Pietraszek, Jacek, Szczepaniak, Marcin
Format: Article
Language:English
Subjects:
boiling heat transfer
enhancement
laser texturing
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creator Orman, Łukasz J.
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description Enhancement of pool boiling heat transfer can be attained with a number of passive and active techniques. The paper experimentally analyses the impact of laser treatment of the copper surfaces on pool boiling heat transfer of distilled water and ethyl alcohol. The samples were modified with a laser beam to produce longitudinal grooves of highly developed microstructures in the laser textured area. Specimens of different groove depths, groove widths and micro-fin widths were produced. The results indicate a significant influence of laser processing on heat flux dissipated from the surfaces and heat transfer enhancement for all the samples tested. The experimental results have been generalized in the form of a heat flux correlation based on a modified model of enhanced pool boiling heat transfer.
doi_str_mv 10.3390/en13112700
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subjects boiling heat transfer
enhancement
laser texturing
title Analysis of Enhanced Pool Boiling Heat Transfer on Laser—Textured Surfaces
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