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Characteristics of Heat Transfer in the Ribbed Rectangular Channel with Variable Heating Condition  

Kim Won-Cheol (School of Mechanical & Aerospace Engineering, Institute of Marine Industry, Gyeongsang National University)
Putra Ary Bachtiar Krishna (School of Mechanical & Aerospace Engineering, Institute of Marine Industry, Gyeongsang National University)
Kang Ho-Keun (School of Mechanical & Aerospace Engineering, Institute of Marine Industry, Gyeongsang National University)
Ahn Soo-Whan (School of Mechanical & Aerospace Engineering, Institute of Marine Industry, Gyeongsang National University)
Publication Information
International Journal of Air-Conditioning and Refrigeration / v.15, no.1, 2007 , pp. 10-16 More about this Journal
Abstract
Surface heat transfer of a fully developed turbulent air flow in a $45^{\circ}$ inclined ribbed square duct with two and four heating walls was experimentally investigated, at which the experimental works were performed for Reynolds numbers ranging from 7,600 to 24,900. The pitch-to-rib height ratio, p/e was kept at 8 and rib-height-to-channel hydraulic diameter ratio, $e/D_h$ was kept at 0.0667. The channel length-to-hydraulic diameter ratio, $L/D_h$ was 60. The heat transfer coefficient values were decreased with the increase in the number of heating walls. Results of this investigation could be used in various applications of internal channel turbulent flow involving roughened walls.
Keywords
Fully developed turbulent flow; Rough square duct; Number of heating walls; Heat transfer coefficient;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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