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http://dx.doi.org/10.3795/KSME-B.2017.41.11.719

Effects of Pitch on Pool Boiling from Horizontal Tube Array  

Kang, Myeong-Gie (Dept. of Mechanical Engineering Education, Andong Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.41, no.11, 2017 , pp. 719-726 More about this Journal
Abstract
An experimental study was performed to investigate the combined effects of the pitch and heat flux of nearby tubes on boiling in a pool as well as the heat transfer from a horizontally-installed tube bundle. For this test, two smooth stainless steel tubes (19 mm outside diameter) were used, and the water was at atmospheric pressure. The pitch of these tubes was varied between 28.5 mm and 95 mm, and the heat flux of the nearby tube altered between 0 and $90kW/m^2$. Enhancements in heat transfer were clearly observed when the heat flux of the nearby tube increased while the heat flux of the test section remained below $40kW/m^2$. The tube pitch was found to have a negligible effect on heat transfer when the pitch was greater than four times larger than the tube diameter. The circulating flow, convective flow, and liquid agitation were all seen to enhance heat transfer; however, the interaction between the flow and coalescence of bubbles was detrimental to heat transfer.
Keywords
Pool Boiling; Tube Array; Horizontal Direction; Pitch;
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Times Cited By KSCI : 2  (Citation Analysis)
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