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 10.21P
Compute the flow rate of 20 °C air through a 0.5-m square-edged orifice plate that is situated in a 1.0-m-i.d. pipe. The pressure drop across the plate is 90 mm H2O, and upstream pressure is 2 atm.
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A 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.
The ethanol solution is pumped into a vessel 25 m above the reference point through a 25 mm diameter steel pipe at a rate of 8 m3 / hr. The pipe length is 40 m and there are 2 elbows. Calculate the power requirements of the pump. The properties of the solution are density 975 kg / m3 and viscosity 4x 10-4 Pa s.
a. Reynold number = Answer.
b. Loss of Energy along the straight pipe = AnswerJ / kg.
c. Losing Energy at curves = AnswerJ / kg.
d. Total energy to overcome friction = AnswerJ / kg.
e. Energy to increase water according to height = AnswerJ / kg.
f. The theoretical energy requirement of the pump ethanol / second = AnswerJ / kg.
g. Actual pump power requirement = Answerwatt.
Water (specific gravity, G, is 1.0 and the kinematic viscosity, ν, is 1.14 *10-6 m2 /s) flows through a piping system with a flow rate of 0.9 m3 /s. The pipe is 2750 m long and 550 mm inside diameter. The pipe has four gate valves, one globe valve, two swing check valves, three standard tees through-branch, and three 90o standard elbows. Calculate the following:
1. The total length of the piping system.2. Is the flow laminar or turbulent?
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...
Ch. 10 - Determine the flow rate of 38 °C air through a...Ch. 10 - A square-edged orifice (p = 0.5) is used to meter...Ch. 10 - Size a suitable orifice plate to meter the steady...Ch. 10 - An in-line flow nozzle is to be used to measure...Ch. 10 - A cast venturi meter is to be used to meter the...Ch. 10 - For 120 ft3/m of 60 °F water flowing through a...Ch. 10 - Estimate the flow rate of water through a...Ch. 10 - A 2-in. (50.8 ram) diameter orifice plate is...Ch. 10 - In order to measure the flow rate ina2mx2mair...Ch. 10 - A flow nozzle is to be used at choked conditions...Ch. 10 - Compute the flow rate of 20 °C air through a 0.5-m...Ch. 10 - An ASME long radius nozzle (P = 0.5) is to be used...Ch. 10 - A square-edged orifice plate is selected to meter...Ch. 10 - Estimate the error contribution to the uncertainty...Ch. 10 - For Problem 10.24, suppose the air flow rate is 17...Ch. 10 - An application uses water flowing at up to...Ch. 10 - Dry air at a static pressure and temperature of...Ch. 10 - Dry air at a stagnation pressure and temperature...Ch. 10 - A sonic nozzle can be used to regulate flow rate...Ch. 10 - Select an appropriate range for a differential...Ch. 10 - From a vendor catalog or online site, select a...Ch. 10 - A vortex flow meter uses a shcdder having a...Ch. 10 - A thermal mass flow meter is used to meter 30 °C...Ch. 10 - Research available thermal mass flow meters...Ch. 10 - Fuel oil used in large sea vessels is known as...Ch. 10 - Estimate an uncertainty in the determined flow...Ch. 10 - A thermal mass flow meter is used to meter air in...Ch. 10 - A vortex meter is to use a shedder having a...Ch. 10 - An engineer has an application of water at 20 °C...Ch. 10 - The flow of air is measured to be 30 m3/min at 50...Ch. 10 - A 6 in. x 4 in. i.d. cast venturi is used to...Ch. 10 - A simple method to measure volume flow rate is to...Ch. 10 - In the problem 10.42, suppose volume can be...
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- 1. Ahorizontal pipe with a diameter of 350 mm discharges water at the rate of 12 m2/ min and has a venturi meter with a throat diameter of 175 mm. Use a loss coefficient Q of 0,97 and calculate the difference in pressure heads between the inlet and the throat of the venturi meter.arrow_forwardpiping system can be neglected but the minor loss at the exit can't be neglected. What is the total head loss in the system, i.e. free surface to pipe exit? What is the minor loss at the exit? volumetric flow rate at the exit is 0.01 m³/s. Assume the minor loss at the entrance of the The valve is partially open. The pipe is made of commercial steel (ɛ = 0.046 mm). The 4. Water is being discharged from a very large reservoir via the piping system shown below. What is the loss coefficient at the exit? Water p=1000 kg/m3 5 m p=0.001 kg/(m s) 0.1 m Q=0.01 m3/s 25marrow_forwardA pitot tube with dia of 3cm is installed in a pipe with ID150 mm. Water flows through the pipe, and the determined pressure drop across the pitot tube is 45 kPa. What is the average velocity of the flow.arrow_forward
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