Theory and Design for Mechanical Measurements
6th Edition
ISBN: 9781118881279
Author: Richard S. Figliola, Donald E. Beasley
Publisher: WILEY
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Chapter 10, Problem 10.26P
An application uses water flowing at up to 0.2m7min of 20 °C through a 10-cm-diameter pipe. The engineer wants to select from a set of orifice plates using flange taps to measure and monitor the flow. It is desired that the meter develop a nominal 250 mm Hg pressure head. Specify an appropriate size (do) for the orifice meter. Sng = 13.6.
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A 3.81-cm diameter venturi meter is installed in a pipe with an internal diameter of 10.23 cm. A 127 cm manometer filled with mercury is used to measure the pressure difference across the venturi meter. If the manometer reads 101.6 cm when 15 °C water is flowing through the pipe, what is the flow rate of water (m3/min)? Assume that the venturi meter coefficient of discharge equals 0.98.
Chapter 10 Solutions
Theory and Design for Mechanical Measurements
Ch. 10 - Prob. 10.1PCh. 10 - A 20-cm-i.d. pipe through which 10 °C air flows is...Ch. 10 - What is the best estimate of the pipe flow rate...Ch. 10 - A mercury-filled (S = 13.57) manometer is used in...Ch. 10 - A capacitance pressure transducer is used to...Ch. 10 - Estimate the expansion factor in measuring the...Ch. 10 - The Reynolds number of a fluid flowing through a...Ch. 10 - At what flow rate of 20 °C water through a 10-cm-...Ch. 10 - Water (25 °C) flows through a square-edged orifice...Ch. 10 - An orifice plate is installed to meter air flow in...
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- Oil at 38 deg. Celsius is being drawn from a closed tank having a pressure of 70 kPa gage. The level of oil in the tank is 2.5m above the pump centerline. The suction line friction loss is 0.6m. The vapor pressure of the gasoline is 48 kPa absolute and its specific gravity is 0.82 Determine the NPSH in meters available. choices: a. 19.36 b. 17.23 c. 4.64arrow_forwardPROBLEM 3: A venturi meter with a throat diameter of 100 mm is fitted in a vertical pipeline of 200 mm diameter with oil of specific gravity 0.88 flowing upwards. Two pressure gauges are fitted at tapping points, one at the throat and the other in the inlet pipe 320 mm below the throat. The difference between the 2 gage pressure readings is 28 kPa. (a) Determine the flow in m^3/s neglecting head losses. (b) Working from Bernoulli’s equation, determine the difference in level (in millimeters) between the two limbs of a mercury manometer if it is connected to the tapping points and the connecting pipes are filled with the same oil.arrow_forwardA venturimeter with a 10.16cm throat is installed in a 15.24cm pipe which is inclined upward at an angle of 45 degrees to the horizontal. If the distance between pressure taps along the pipe is 1.5, the difference in pressure is 70 kPa, and the water temperature is 70oC, what is the discharge of water in m3/sec? Assume coefficient of 0.985.arrow_forward
- Find the difference in pressure head and velocity of flow of an oil through a pipe, when the difference of mercury level in a different U-tube manometer connected to the two tappings of the pitot tube as 110 mm. Take co-efficient of the pitot tube ("L" shaped measuring instrument ) as 0.9 and sp. gr of oil = 0.9 (Enter only the values in the boxes by considering units given in the bracket. Do not send the hand written answers to my mail Id) Difference in pressure head (unit in m) = Velocity of flow (unit in m/s) = Question 8 个arrow_forwardA venturi meter is to be installed in a schedule 40, 6-inch line to measure the flow of water. The maximum rate is expected to be 800 gpm at 86°F. A 50-inHg manometer is to be used. Specify the throat diameter of the venturi. The discharge cone angle is 5°.A. 2.38 inB. 2.98 inC. 3.40 inD. 4.50 inarrow_forward1. Solve and draw the figures İ. An oil of sp. gr. 0.9 is flowing through a venturimeter having inlet diameter 20 cm and throat diameter 10 cm. The oil-mercury differential manometer shows a reading of 20 cm. Calculate the discharge of oil through the horizontal venturimeter. Take C, = 0.98. ii. A horizontal venturimeter with inlet diameter 30 cm and throat diameter 15 cm is used to measure the flow [Ans. 59.15 litres/s] of oil of sp. gr. 0.8. The discharge of oil through venturimeter is 50 litres/s, find the reading of the oil- mercury differential manometer. Take C = 0.98. iii. A horizontal venturimeter with inlet diameter 20 cm and throat diameter 10 cm is used to measure the flow of water. The pressure at inlet is 14.715 N/cm² and vacuum pressure at the throat is 40 cm of mercury. Find the discharge of water through venturimeter. [Ans. 2.489 cm] [Ans. 162.539 lit./s]arrow_forward
- A venturi meter of 20 mm throat diameter is used to measure. The velocity of water in a horizontal pipe of 40 mm diameter. If the pressure difference between the pipe and the throat sections is found to be 30 KPa then, neglecting frictional losses, the flow velocity is?arrow_forwardA venturi meter with a throat diameter of 100 mm is fitted in a vertical pipeline of 200 mm diameter with oil of specific gravity 0.88 flowing upwards. Two pressure gauges are fitted at tapping points, one at the throat and the other one in the inlet pipe 320 mm below the throat. The difference between the gage pressure readings is 28 kPa. (a) Determine the flow in m^3/s neglecting head losses. (b)Working from Bernoulli's equation, determine the difference in level (in millimeters) between the two limbs of a mercury manometer if it is connected to the tapping points and the connecting pipes are filled with the same oil.arrow_forward3:'A hydraulic oil is flowing in a horizontal drawn steel hydraulic tube ( ɛ = 1.5 x 10-6m) with an ID of 0.047m. A pressure difference of 68 kPa is || observed between two points in the tube 30 meters apart. The oil has a specific gravity of 0.90 and a dynamic viscosity of 3.0 × 10¬³P ·s. Calculate the velocity of the flow of oil using Method Il-C iteration.arrow_forward
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