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http://dx.doi.org/10.7731/KIFSE.2013.27.6.001

A Study on the Effects of Various Disk Shape of Hydrant on the Pressure Drop  

You, Woo Jun (Dept. of Mechanical Engineering, Chung-Ang University)
Shim, Myoung Gyu (Korea Fire Institute of Industrial & Technology)
Sung, Kun Hyuk (Dept. of Mechanical Engineering, Chung-Ang University)
Yu, Jae Bum (Korea Fire Institute of Industrial & Technology)
Youm, Moon Cheon (Korea Fire Institute of Industrial & Technology)
Ryou, Hong-Sun (Dept. of Mechanical Engineering, Chung-Ang University)
Publication Information
Fire Science and Engineering / v.27, no.6, 2013 , pp. 1-7 More about this Journal
Abstract
In this study, the effects of various disk shapes of hydrant on the pressure drop are experimentally and numerically analyzed. The test methods for measuring pressure drop of hydrant are comply with standard of Underwriters Laboratory (UL). The hydrant as used in this study has one inlet, diameter 150 mm, and three outlet, 114.3 mm diameter for one outlet and 63.5 mm diameter for the others. The pressure of the hydrant are measured in the range 760 L/min~2,270 L/min for 63.5 mm outlet and 3,030 L/min~6,060 L/min for 114.3 mm outlet. Also, the numerical results of pressure drop are compared with the experiments to verify the accuracy and to analyze the of various valve shape of hydrant on the pressure drop. The engineering parameters, flow coefficients, are reduced from 181.57 to 136.35 ($L/min/kPa^{0.5}$) with inclined angle of disk from $0^{\circ}$ to $45^{\circ}$. These results are able to practical use for design hydrant to minimize pressure drop.
Keywords
Hydrant; Disk shape; Flow coefficient; Loss of head; Inclined angle; Open area of hydrant's disk;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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