Experimental Estimation of Head Loss Coefficient and Performance of Discharge Control Valve

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MEHRI NARGES; Bijankhan Mohammad

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Journal: Iranian Journal of Soil and Water Research Year:2019 | Volume:50 | Issue:8 Page(s): 2001-2007

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Title

Experimental Estimation of Head Loss Coefficient and Performance of Discharge Control Valve

Author(s)

MEHRI NARGES | Bijankhan Mohammad | Issue Writer Certificate

Keywords

Discharge control valveQ2

Head-loss coefficientQ1

Volumetric water deliveryQ1

Abstract

Discharge control valve is a device for Volumetric water delivery purposes without using electronic facilities. For analytical modeling of pressurized pipe networks, valves are introduced with their head loss properties. Therefore, any information about the valve head loss is very crucial. In this study, the head loss coefficient in Discharge control valves is estimated. For this purpose, control valves were fabricated for the design discharges of 5 and 10 l/s and their performances were tested experimentally. The results indicated that the Discharge control valves could accurately deliver an almost constant discharge, irrespective to the pressure fluctuations. The head-loss of entrance and all parts of the valve were investigated experimentally. Measuring the associated head loss coefficients indicated that the entrance head loss is significant in low differential pressures. Also, it was observed by increasing the differential pressure, the total head loss increases as well. From the hydraulic point of view, the main reason creating a relatively constant discharge through the valve is increasing/decreasing the head-loss proportional to increasing/decreasing the differential pressure. Finally, based on Buckingham analysis, empirical formulas were presented to define the Head-loss coefficients.

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APA: Copy

MEHRI, NARGES, & Bijankhan, Mohammad. (2019). Experimental Estimation of Head Loss Coefficient and Performance of Discharge Control Valve. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 50(8 ), 2001-2007. SID. https://sid.ir/paper/225528/en

Vancouver: Copy

MEHRI NARGES, Bijankhan Mohammad. Experimental Estimation of Head Loss Coefficient and Performance of Discharge Control Valve. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2019;50(8 ):2001-2007. Available from: https://sid.ir/paper/225528/en

IEEE: Copy

NARGES MEHRI, and Mohammad Bijankhan, “Experimental Estimation of Head Loss Coefficient and Performance of Discharge Control Valve,” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 50, no. 8 , pp. 2001–2007, 2019, [Online]. Available: https://sid.ir/paper/225528/en

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