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Unformatted text preview: -tube manometer.
The densities and vertical distances are shown in Fig.
P6.139. (a) Write an expression for velocity V in terms of
the parameters in the problem. (b) Is it critical that distance h1 be measured accurately? (c) How does the expression for velocity V differ from that which would be
obtained if a pitot-static probe had been available and used
with the same U-tube manometer?
P6.140 Kerosine at 20°C flows at 18 m3/h in a 5-cm-diameter pipe.
If a 2-cm-diameter thin-plate orifice with corner taps is installed, what will the measured pressure drop be, in Pa?
P6.141 Gasoline at 20°C flows at 105 m3/h in a 10-cm-diameter
pipe. We wish to meter the flow with a thin-plate orifice
and a differential pressure transducer which reads best at
about 55 kPa. What is the proper ratio for the orifice?
P6.142 The shower head in Fig. P6.142 delivers water at 50°C.
An orifice-type flow reducer is to be installed. The upstream pressure is constant at 400 kPa. What flow rate, in Textbook Table of Contents | Stud...
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This note was uploaded on 10/27/2009 for the course MAE 101a taught by Professor Sakar during the Spring '08 term at UCSD.
- Spring '08