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http://dx.doi.org/10.3795/KSME-B.2010.34.11.983

Effects of Micro-fin Structure on Spray Cooling Heat Transfer in Forced Convection and Nucleate Boiling Region  

Kim, Yeung-Chan (Dept. of Automotive & Mechanical Engineering, Andong National Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.34, no.11, 2010 , pp. 983-990 More about this Journal
Abstract
In the present study, spray cooling heat transfer was experimentally investigated for the case in which water is sprayed onto the surfaces of micro-fins in forced convection and nucleate boiling regions. The experimental results show that an increase in the droplet flow rate improves heat transfer due to forced convection and nucleate boiling in the both case of smooth surface and surfaces of micro-fins. However, the effect of subcooling for fixed droplet flow rate is very weak. Micro-fins surfaces enhance the spray cooling heat transfer significantly. In the dilute spray region, the micro-fin structure has a significant effect on the spray cooling heat transfer. However, this effect is weak in the dense spray region. A previously determined correlation between the Nusselt number and Reynolds number shows good agreement with the present experimental data for a smooth surface.
Keywords
Spray Cooling; Heat Transfer; Micro-Fins; Droplet Flow Rate; Cooling Device; Full Cone Spray;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
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