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Friction and Colburn factor correlations and shape optimization of chevron-type plate heat exchangers

Title
Friction and Colburn factor correlations and shape optimization of chevron-type plate heat exchangers
Author
이관수
Keywords
Chevron; Plate heat exchanger; Friction factor; Colburn factor; Correlation; Optimization
Issue Date
2015-10
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
APPLIED THERMAL ENGINEERING, v. 89, Page. 62-69
Abstract
The unsteady numerical analysis with a large-eddy simulation (LES) has been described to examine the characteristics of pressure drop and heat transfer for chevron-type plate heat exchangers. For validation of the numerical results, experiments were carried out; good agreement was found, with a maximum error of 10%. Correlations of friction factor and Colburn factor were determined by taking various geometric parameters (chevron angle beta, pitch p, and height h) and working fluids into account. Design optimization was also conducted by using the micro-genetic algorithm and considering the JF factor as an objective function. The optimal points (beta = 66.5 degrees and p/h = 2.73) were almost constant, regardless of the Reynolds number. (C) 2015 Elsevier Ltd. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S1359431115005499?via%3Dihubhttp://hdl.handle.net/20.500.11754/28299
ISSN
1359-4311
DOI
10.1016/j.applthermaleng.2015.05.080
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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