Applied Fluid Mechanics
7th Edition
ISBN: 9780133414622
Author: UNTENER
Publisher: YUZU
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Chapter 15, Problem 15.15PP
A pitot-static tube is inserted into a duct carrying air at standard atmospheric pressure and a temperature of
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The volume flow rate of water that recirculates from the blade outlet to the impeller is estimated to be 0.4524 ft^3/min, and the losses through the shaft sealing is negligible. The hydraulic and mechanical efficiency of a centrifugal pump are 95% and 93%, respectively. If the pump delivers water a flow rate of 12 ft^3/min, calculate the pump efficiency in %.
Chapter 15 Solutions
Applied Fluid Mechanics
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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- A horizontal pipe line conveys a constant rate of flow which is measured by a venturimeter located in it. The secondary element is a differential manometer. When the manometer is inclined upward in the direction of flow, the deflection on a differential manometer will _______.arrow_forwardA fan produces 200Pa at an impeller speed of 1000rpm. What is the change in pressure if the impeller speed was increased to 2000rpm? Show complete solution.arrow_forwardA system pumps water from a lower reservoir to a higher reservoir. The pipe diameter is 0.245 m and the pipe lengths are L1= 5 m, L2= 3 m, L3= 3 m, and L4= 0.3 m. The impeller of the centrifugal pump has a diameter of 0.5 m and operates at 900 rpm. The uniform blade height is 56 mm. The water enters the pump parallel to the pump shaft with a flow rate of 0.19 m3/s. Take viscosity as 0.00112 N s/m2. What would be the shaft power required to turn the impeller if the exit blade angle is 50 degrees. Work to 4 significant digits. Enter all values using base units or their combinations, i.e. m, m/s, Pa, N. Do not use multiples as e.g. mm, kPa. You can use values with exponents, such as 0.12e3.arrow_forward
- A pitot static tube fitted in a pipe of 0.25 m diameter records the difference in stagnation and static pressure as 0.085 m of water. Assume the velocity coefficient as unity, calculate the water velocity in the pipe line.arrow_forwardA pitot static tube is used to measure the velocity of water in a pipeline. If the mercury manometer attached to it shows a reading of 0.17 m, calculate the water velocity in the pipe. Assume coefficient of velocity as 0.98.arrow_forwardQ.4) Differentiate between major and minor losses in pipes.arrow_forward
- Calculate the minimal head of the pump required to pump 1 m³ of water per second to the height 10 m trough a pipe with cross sectional area 0.1 m². Assume constant friction coefficient f = 0.04 and neglect all losses in fittings. The pump head is the gravity head plus losses and so it can be found?arrow_forwardA single-stage centrifugal pump has an impeller speed of 1750 rpm. If the flow rate of water is 60 gal/min, determine the expected head. Choices: 45 ft 60 ft 29 ft 18 ftarrow_forwardA venturimeter of 0.5 contraction ratio has been fixed in a 100 mm diameter horizontal pipe.The head of water on the metre when there is no flow is 3 m . Calculate the rate of flow for which the throat pressure will be 2 metres of water absolute. The co-efficient of meter is 0.97 , Taking atmospheric pressure head is 10.3 m of water.arrow_forward
- Water recirculates at a volume flow rate of 0.4524 ft3/min from the blade outlet to the impeller, and shaft sealing losses are negligible. A centrifugal pump has a hydraulic efficiency of 95% and a mechanical efficiency of 93%, respectively. Calculate the pump efficiency in percent if the pump delivers water at a flow rate of 12 ft3/min.arrow_forwardA pump is used to lift water at ambient temperature from one tank to another at a rate of 08/50 m3/min. If the pipe diameter is 4 in, calculate the power required to run the pump (efficiency 70%). The pipe material is commercial steel and contains 3 standard radius elbows. Assume h=1 cP. Calculate the Reynolds number and the friction head loss using the Moody chart attached, Using Colebrook equation. Calculate the other losses and the total loss, (Calculate the required power. Flow rate is not necessary for answering the question.arrow_forwardAn orifice 150 mm diameter, having a coefficient of contraction of 0.65 discharges oil (SG=0.80) under a head of 8 m. The average actual velocity of the jet is 11.65 m/s. Compute the diameter of the jet at the vena contracta.arrow_forward
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