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Measurment Sheet

The document contains 9 measurement questions regarding fluid flow properties like velocity, pressure drop, flow rate, and nozzle sizing for different liquids flowing through pipes and meters. Key information includes fluid densities and viscosities, pipe diameters, flow rates, measurement devices, and pressure readings. The goal is to use provided data and equations to solve fluid dynamics problems.

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70 views5 pages

Measurment Sheet

The document contains 9 measurement questions regarding fluid flow properties like velocity, pressure drop, flow rate, and nozzle sizing for different liquids flowing through pipes and meters. Key information includes fluid densities and viscosities, pipe diameters, flow rates, measurement devices, and pressure readings. The goal is to use provided data and equations to solve fluid dynamics problems.

Uploaded by

az7303782
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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MEP 214 2nd MECH Spring 2020

Measurement sheet
1. For the pitot-static pressure arrangement, the manometer fluid is (colored) water at
20°C. Estimate the centerline velocity (ρ=998 kg/m3, μ=0.001 Pa.s)

2. 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? (ρ=804 kg/m3, μ=0.00192 Pa.s)

3. 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 β ratio for the orifice? (ρ=680 kg/m3, μ=0.000292
Pa.s)

1
4. A 10-cm-diameter smooth pipe contains an orifice plate with D:2D taps and β=0.5. The
measured orifice pressure drop is 75 kPa for water flow at 20°C. Estimate the flow
rate, in m3/h. What is the nonrecoverable head loss? (ρ=998 kg/m3, μ=0.001 Pa.s)

5. Gasoline at 20°C flows at 0.06 m3/s through a 15-cm pipe and is metered by a 9-cm
long-radius flow nozzle. What is the expected pressure drop across the nozzle? (ρ=680
kg/m3, μ=0.000292 Pa.s)

6. Ethyl alcohol at 20°C flowing in a 6-cm-diameter pipe is metered through a 3-cm long-
radius flow nozzle. If the measured pressure drop is 45 kPa, what is the estimated
volume flow, in m3/h? (ρ=789 kg/m3, μ=0.0012 Pa.s)

7. Kerosine at 20°C flows at 20 m3/h in an 8-cm-diameter pipe. The flow is to be metered


by an ISA 1932 flow nozzle so that the pressure drop is 7000 Pa. What is the proper
nozzle diameter? (ρ=804 kg/m3, μ=0.00192 Pa.s)
8. It is desired to meter a flow of 20°C gasoline in a 12-cm diameter pipe, using a modern
venturi nozzle. In order for international standards to be valid, what is the permissible
range of (a) flow rates, (b) nozzle diameters, and (c) pressure drops? (ρ=680 kg/m3,
μ=0.000292 Pa.s)

9. Ethanol at 20°C flows down through a modern venturi nozzle If the mercury
manometer reading is 4 in, as shown, estimate the flow rate, in gal/min. ( ρ=1.53
slug/ft3, μ=2.51×10-5 slug/ft.s)
Data Sheet
1. Orifice

2. Nozzle
Long Radius nozzle

short-radius ISA 1932

3. Venturi (ReD=1.5×105-2×105) & (0.316 <𝛃 <0.775)


Discharge coefficient for a thin-plate orifice with D:1/2D taps

Discharge coefficient for long-radius nozzle and classical Herschel-type ventur


Discharge coefficient for a venturi nozzle.

Nonrecoverable head loss in Bernoulli obstruction meters

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