Applied Fluid Mechanics: Global Edition
7th Edition
ISBN: 9781292019611
Author: Robert Mott
Publisher: Pearson Higher Education
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Chapter 15, Problem 15.10PP
An orifice meter is to be installed in a 12-in ductile iron pipe carrying water at
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1 - If the pipeline is now specified to be of Schedule 40 with a nominal diameter of 6 in., and the available pressure at the pump exit is P2 = 132.7 psig, what flow rate Q (gpm) can be expected?
Answer the following additional questions:
2 -If the combination of pump and motor is 80% efficient, how much electrical power (kW) is needed to drive the pump?
3 -, in order to avoid vapour lock, the pressure in the pipeline must always be above the vapor pressure of the crude oil, what is the maximum permissible elevation of point 3 relative to point 4?
4 -If the flow in the pipeline were at the upper limit of being laminar, what pump exit pressure would then be needed? (Answer this part without using the friction factor plot.
1. How does the manometer reading of the Orifice Meter apparatus affect its discharge? If the flowrate passing through the apparatus is increased, what will happen to the corresponding theoretical discharge?
31. Situation 11 - Water flows through a horizontal Venturi meter whose inlet diameter is 31 cm. and throat diameter is 19 cm. The pressure at the inlet is 755 kPa and at the throat is 550 kPa. Neglect head lost.
a. Determine the discharge in m3/s. Round off to three decimal places.
b. Determine the velocity in the throat, in m/s. Round off to three decimal places.
c. Determine the velocity in the inlet, in m/s. Round off to three decimal places.
Chapter 15 Solutions
Applied Fluid Mechanics: Global Edition
Ch. 15 - List six factors that affect the selection and use...Ch. 15 - Define range as it relates to flowmeters.Ch. 15 - Describe three methods for calibrating flowmeters.Ch. 15 - Prob. 4RQCh. 15 - Prob. 5RQCh. 15 - Prob. 6RQCh. 15 - Prob. 7RQCh. 15 - What is the nominal included angle of the...Ch. 15 - Why is there such a difference between the angles...Ch. 15 - Prob. 10RQ
Ch. 15 - Prob. 11RQCh. 15 - Describe an orifice meter and how it is used.Ch. 15 - Describe a flow tube and how it is used.Ch. 15 - Of the venturi, the flow nozzle, the flow tube,...Ch. 15 - Describe pressure loss as it relates to flowmetersCh. 15 - Rank the venturi, the flow nozzle, the orifice,...Ch. 15 - Prob. 17RQCh. 15 - Prob. 18RQCh. 15 - Prob. 19RQCh. 15 - Describe a magnetic flowmeter and how it is usedCh. 15 - Describe how mass flow irate can be measuredCh. 15 - Describe a pitot tube and how it is used.Ch. 15 - Prob. 23RQCh. 15 - Prob. 24RQCh. 15 - Prob. 25RQCh. 15 - Prob. 26RQCh. 15 - Describe the method used to measure the average...Ch. 15 - Prob. 28RQCh. 15 - Describe a hot-wire anemometer and how it is usedCh. 15 - Prob. 30RQCh. 15 - A venturi meter similar to the one in Fig. 15.2has...Ch. 15 - Air with a specific weight of 12.7N/m3 and a...Ch. 15 - Prob. 15.3PPCh. 15 - Prob. 15.4PPCh. 15 - Prob. 15.5PPCh. 15 - Prob. 15.6PPCh. 15 - Prob. 15.7PPCh. 15 - An orifice meter is to be used to measure the flow...Ch. 15 - A flow nozzle is to be installed in a 5-in Type K...Ch. 15 - An orifice meter is to be installed in a 12-in...Ch. 15 - A pitot-static tube is inserted into a pipe...Ch. 15 - A pitot-static tube is connected to a differential...Ch. 15 - A pitot-static tube is inserted in a pipe carrying...Ch. 15 - A pitot-static tube is inserted into a duct...Ch. 15 - A pitot-static tube is inserted into a duct...
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- How does the Orifice Meter equipment measure and record the kinetic and potential energy of a flowing fluid? When fluid flows through the Orifice Meter equipment, describe the changes in velocity, pressure, and elevation heads that occur.arrow_forwardC3. An oil of specific gravity 0.85 is flowing through a horizontal venturimeter fitted to a 240 mm diameter pipe at the rate of 102 liters/s and throat diameter is 98 mm. The entrance and throat of the venturimeter are connected in the two limbs of a U-tube mercury manometer. The difference in mercury level shows 835 mm. Calculate (i) the head difference in m of oil, (ii) the theoretical discharge in m3/s, (iii) the actual discharge in m3/s, and (iv) the coefficient of discharge of a venturimeter. If instead of a U-tube mercury manometer, the pressure gauges are inserted at the entrance and throat of venturimeter. Find (v) the pressure at the throat in N/mm2, if the entrance pressure gauge shows0.126 N/mm2. (Enter only the values by referring to the unit given. Also, upload the handwritten answers in the link provided) (i) the head difference in m of oil (ii) the theoretical discharge in m3/s (iii) the actual discharge in m3/s (iv) the coefficient of…arrow_forward04: Three pipes of diameters 300 mm, 200 mm and 400 mm and lengths 450 m, 255 m and 315 m, respectively, are connected in series. The difference in water surface levels in two tanks is 18 m. Determine the rate of water flow if coefficients of friction are 0.0075, 0.0078 and 0.0072, respectively, considering: (a) with minor losses, (b) without (neglecting) ‘minor losses.arrow_forward
- PROBLEM 2: Water flows downwards in a vertical pipeline of gradually varying section from point 1 to point 2, which is 1.5m above point 1, at the rate of 0.9m^3/s. At section 1 the pipe diameter is 0.5m and pressure is 800 kPa. If pressure at section 2 is 600 kPa, determine the pipe diameter at that location. Neglect losses.arrow_forwardGiven below are pipe lengths, sizes, and connections. All pipes have a friction factor of 0.020. If the flow from Ato B is 5 cfs. a) Determine the head loss in feet in PIPE 1 and PIPE 2 b) Determine the head loss in feet in PIPE 5 c) Determine the flow in the upper branch pipe Q2 in cubic feet per second d) Determine the total head loss in feet between the inlet A and the outlet Darrow_forwardAn oil of specific gravity 0.89 is flowing through a horizontal venturimeter fitted to a 242 mm diameter pipe at the rate of 108 liters/s and throat diameter is 98 mm. The entrance and throat of the venturimeter are connected in the two limbs of a U-tube mercury manometer. The difference in mercury level shows 841 mm. Calculate (i) the head difference in m of oil, (ii) the theoretical discharge in m3/s, (iii) the actual discharge in m3/s, and (iv) the coefficient of discharge of a venturimeter. If instead of a U-tube mercury manometer, the pressure gauges are inserted at the entrance and throat of venturimeter. Find (v) the pressure at the throat in N/mm2, if the entrance pressure gauge shows0.13 N/mm2.arrow_forward
- In the test of the reaction turbine, the water flowing over the weir in the tailrace was found to be 39.8 ft3 /s. The leakage into the tailrace was found to be 1ft3 /s. The elevation of the centerline of the shaft above, the surface of tailwater was 12.67ft. The diameter of the turbine intake was 30in and the pressure at this section was measured by a mercury U-tube. The readings in the two sides of the mercury U-Tube were 10.556 ft and 0.900 ft, the zero of the scale being at a level 3.82ft below that of the centerline of the turbine shaft. The generator output was 391.8 kW, friction and windage loss 13.8 kW, iron loss 2.0kW and armature loss of 4.4kW. The specific gravity of the mercury used was 13.57. Calculate the efficiency of the turbine.arrow_forwardO1: A stream of water of diameter d = 0.1 m flows steadily from a tank of diameter D= 1.0 m. Determine The Weight Flowrate, needed from the inflow pipe if the water depth remains constant, 0 — d=010marrow_forwardA pipe, 12 inch in diameter at A, discharges 4.0 cfs of heavy fuel oil (sp gr = 0.899) into the air at B, where the diameter is 6 inch. If B is 12 ft above A and the frictional loss between the two points is equivalent to 3.0 lb per sq in, determine the pressure at A in pounds per square inch.arrow_forward
- Water flows through a garden hose at a rate of 1 l/s. The upstream diameter of the hose is 2.5 cm, and the nozzle outlet has a diameter of 1 cm. Determine the upstream pressure (gage pressure).arrow_forwardVariable displacement pumps used in hydraulic applications canarrow_forwardPROBLEM 1: Water flows upwards in a vertical pipeline of gradually varying section from point 1 to point 2, which is 1.5m above point 1, at the rate of 0.9m^3/s. At section 1 the pipe diameter is 0.5m and pressure is 800 kPa. If pressure at section 2 is 600 kPa, determine the pipe diameter at that location. Neglect losses.arrow_forward
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