Figure P5.101 shows a test rig for evaluating the loss coefficient, (mathrm{K}), for a valve. Mechanical energy
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Figure P5.101 shows a test rig for evaluating the loss coefficient, \(\mathrm{K}\), for a valve. Mechanical energy losses in valves are modeled by the equation:
\[ g h_{L}=\mathrm{K}\left(\frac{V^{2}}{2}\right) \]
where \(g h_{L}\) is the mechanical energy loss and \(V\) is the flow velocity entering the valve. In a particular test, the pressure gage reads \(40 \mathrm{kPa}\), gage, and the \(1.5-\mathrm{m}^{3}\) catch tank fills in \(2 \mathrm{~min} 55 \mathrm{~s}\). Calculate the loss coefficient for a water temperature of \(20{ }^{\circ} \mathrm{C}\).
Figure P5.101
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Related Book For
Munson Young And Okiishi's Fundamentals Of Fluid Mechanics
ISBN: 9781119080701
8th Edition
Authors: Philip M. Gerhart, Andrew L. Gerhart, John I. Hochstein
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