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Solution Library
Head Loss Calculations Using Constant Friction Factor
Question
A one-meter in diameter holding tank, which is opened to the atmosphere, is filled with water. A four-inch line (ID) connects the bottom of the tank to a control valve, 30 feet below (assume the liquid level in the tank has negligible impact on the head). To simplify head loss calculations, use a constant friction factor of 0.06.
a) Obtain the pressure versus volumetric flow rate graph for the system outlined (the graph must include the hydrostatic head, pressure drop across the valve and line losses).
b) Based on the ratio of the highest to lowest pressure drop across the valve, would a linear or equal percentage valve be better suited?
c) Based on your recommendation in b), obtain a suitable valve size if the maximum desired flow rate is 150 gpm.
d) Obtain the installed valve characteristic curve for a linear and equal percentage valve. Does your recommendation made in b) hold?
Summary
This question belongs to physics and discusses about head loss calculations of a one-meter diameter tank.
Word count: NA
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