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Physical dealloying for two-phase heat transfer applications: pool boiling case
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Physical dealloying for two-phase heat transfer applications: pool boiling case
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Paper
Physical dealloying for two-phase heat transfer applications: pool boiling case
2023
Overview
In this work, physical dealloying was explored as a simple and green method to microstructure the surface of commercial brass for pool boiling heat transfer coefficient enhancement. Three samples were dealloyed for 0.5, 1 and 3 hours at 650 C, turning the smooth surface into a porous one with a depth of 175, 200 and 223 um. The boiling experiments carried out in ethanol at 78 C have shown, that the maximum enhancement of heat transfer coefficient between 110 and 150% was achieved for the sample dealloyed for 0.5 h. Longer intervals of dealloying reduce boiling performance, but it is still much higher compared to smooth brass. This simple method can be customized for various thermal management equipment, such as conventional, plate and micro heat exchangers, all types of heat pipes, HVAC equipment etc., where the heat transfer occurs with phase change.
Publisher
Cornell University Library, arXiv.org
Subject
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