Enhanced Surfaces Used in Research on Flow Boiling Heat Transfer in Minichannels

Enhanced Surfaces Used in Research on Flow Boiling Heat Transfer in Minichannels

STRĄK Kinga, PIASECKA Magdalena, STRĄK Dariusz

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Abstract. This paper reviews enhanced surfaces used to study boiling heat transfer in minichan-nels with rectangular cross-sections. Experiments were conducted for refrigerants flowing along a vertical minichannel, asymmetrically heated by one of the enhanced surfaces. The enhanced surfaces used in the experiments were the following: laser textured and vibration-assisted laser textured surfaces with regular cavities, electro-discharge machined surfaces with irregular cavities, fibrous surfaces with capillary-porous structures, and powder-coated surfaces. Heat transfer efficiency was evaluated based on local heat transfer coefficients calculated at the heated surface-fluid interface in the minichannel. Vibration-assisted laser surface texturing provided the most efficient heat transfer compared to the other enhanced surfaces and the smooth surface.

Laser Texturing, Vibration-Assisted Laser Texturing, Electromachining Texturing, Porous Surface, Flow Boiling, Heat Transfer, Minichannel

Published online 7/16/2018, 6 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: STRĄK Kinga, PIASECKA Magdalena, STRĄK Dariusz, ‘Enhanced Surfaces Used in Research on Flow Boiling Heat Transfer in Minichannels’, Materials Research Proceedings, Vol. 5, pp 154-159, 2018

DOI: http://dx.doi.org/10.21741/9781945291814-27

The article was published as article 27 of the book Terotechnology

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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