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http://dx.doi.org/10.6110/KJACR.2012.24.3.265

Heat Transfer Characteristics of Heat Exchange Module for a Water Tube Type Modular Boiler  

Ahn, Joon (School of Mechanical Engineering, Kookmin University)
Kim, Jong-Jin (Korea Institute of Energy Research)
Kang, Sae-Byul (Korea Institute of Energy Research)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.24, no.3, 2012 , pp. 265-270 More about this Journal
Abstract
A finned tube type heat exchange module has been proposed for a multi-burner water tube boiler. Fin density and length increase in streamwise direction to equalize the evaporation for each module, which makes it difficult to apply conventional bulk design procedure. The design program has been improved by updating data for every row of tubes along the flow. A numerical simulation has been also conducted to evaluate the effect of inlet conditions and validated with experiment. The heat transfer of the first row has been underpredicted by the conventional Zhukauskas correlation, since the acceleration of the flow due to the blockage is not fully inflected. The fin tip temperature is also underpredicted by Bessel solution, because of the interaction with neighboring fins.
Keywords
Tube bank; Water tube boiler; Heat transfer;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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