Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 18, Problem 18.27PP
Specify a size of Schedule
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A home hot water heater contains 40 gal of water. Because of a failure of the heat control, heat is continuously applied to the water in the tank, increasing the temperature and pressure. Unfortunately, the relief valve is clogged and the pressure rises past the maximum pressure of the vessel. At 250 psig the tank ruptures. Estimate the quantity of water flashed
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Question 4
Determine the size of the control valve required to control the flow rate of water. The maximum flow
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Chapter 18 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 18 - A pipe in a compressed air system is carrying 2650...Ch. 18 - Prob. 18.2PPCh. 18 - Prob. 18.3PPCh. 18 - A duct in a heating system carries 8320 cfm....Ch. 18 - The velocity of flow in a ventilation duct is 1140...Ch. 18 - Prob. 18.6PPCh. 18 - Prob. 18.7PPCh. 18 - Prob. 18.8PPCh. 18 - Prob. 18.9PPCh. 18 - Prob. 18.10PP
Ch. 18 - Prob. 18.11PPCh. 18 - Describe a centrifugal fan with forward-curved...Ch. 18 - Prob. 18.13PPCh. 18 - Prob. 18.14PPCh. 18 - Name four types of positive-displacement...Ch. 18 - Name a type of compressor often used for pneumatic...Ch. 18 - Prob. 18.17PPCh. 18 - Prob. 18.18PPCh. 18 - Prob. 18.19PPCh. 18 - Compute the specific weight of nitrogen at 32...Ch. 18 - Compute the specific weight of air at 1260...Ch. 18 - Prob. 18.22PPCh. 18 - An air compressor delivers 820 cfm of free air....Ch. 18 - Prob. 18.24PPCh. 18 - Prob. 18.25PPCh. 18 - Prob. 18.26PPCh. 18 - Specify a size of Schedule 40 steel pipe suitable...Ch. 18 - For an aeration process, a sewage treatment plant...Ch. 18 - Prob. 18.29PPCh. 18 - Prob. 18.30PPCh. 18 - Prob. 18.31PPCh. 18 - Prob. 18.32PPCh. 18 - Prob. 18.33PPCh. 18 - Prob. 18.34PPCh. 18 - Prob. 18.35PPCh. 18 - Figure 18.14 iD shows a two-compartment vessel....Ch. 18 - Prob. 18.37PPCh. 18 - Prob. 18.38PPCh. 18 - Prob. 18.39PPCh. 18 - A tank of Refrigerant is at 150 kPa gage and 20C....Ch. 18 - Prob. 18.41PP
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- 4. A special oil is to be used in an absorption tower. The preliminary design of the unit requires the oil to be pumped from an open tank with a 10 ft liquid level above the floor and forced through 150 ft of 3 inches schedule 40 pipe with a ball check valve and 5 elbows into the top of a tower 30 ft above the floor. The operating pressure in the tower is to be 52 psig and the oil requirement is estimated at 50 gpm. The viscosity of the oil 15 cP and its density is 53.5 Ibm/ft. Assuming the pumping outfit operates with an overall efficiency of 60%, what horsepower input will be required for the pump motor?arrow_forwardCrude oil having a specific gravity of 0.93 and a viscosity of 4cP is draining by gravity from the bottom of the tank. The depth of the liquid above the drawoff connection in the tank is 6m. The line from the drawoff is 3-in. Schedule 40 pipe. Its length is 45m, and it contains one ell and two gate valves. The oil discharges into the atmosphere 9m below the drawoff connection of the tank. What flow rate, in cubic meters per hour, can be expected through the line? Illustrate the problem.arrow_forwardDetermine the time required for the flow in the pipe system shown below to reach 80% of the maximum (equilibrium) value. ECL = 14. Water B Valve Darrow_forward
- The pressure relieve valve has a spool of 1.5 sq inches area, if a pressure of 150 psi is required to compress the sprint 0.25 inches to open the outlet port and reduce pressure(P) in the system. Evaluate the spring stiffness(k). F repestents spring forcearrow_forwardQUESTION 1 of From pump 1.0 m a. Using a vertical bar chart, plot the pressure drop (i.e. P₁-P₂) for these eight nominal pipe sizes: 3/4", 1", 1- 1/4", 1-1/2", 2", 2-1/2", 3", 4", 6", and 8" 1.5 m Given the following conditions: Carbon tetrachloride at 20 °C is flowing through the piping system at a volumetric flow rate of 0.2 m³/min Total length of piping = 50 m Piping to be used is schedule 40 carbon steel pipe with an absolute roughness = 0.05 mm All 45° and 90° elbows have 'threaded regular' geometry Use the nominal pipe dimensions (3/4", 1", etc) for the x-axis labels but be sure to use the actual internal pipe diameters (given in document titled 'Table D1 in Janna textbook') in your calculations. HINT: Using a logarithmic scale on the y-axis scale will allow you to better compare the entire range of values. b. Re-do plot from part a, but now include the total cost (in USD) of the piping (you can ignore the costs associated with the fittings) on a secondary y-axis. For the piping…arrow_forwardShow all problem solution's steps. Direct formula substitution solutions will have NO CREDIT POINTS. 1.A 50 mm Venturi meter (C = 0.96) is installed in a 100 mm diameter horizontal pipe carrying oil having a specific gravity of 0.82. If the recorded actual flow in the Venturi meter was 15 liters per second, what could have been the deflection of water in the differential manometer connected between the inlet and the throat? Determine the headloss in the Venturi meter. A 75 mm diameter fire hose discharges water through a nozzle having a jet diameter of 25 mm. The lost head in the nozzle is 25% of the velocity head in the jet. If the pressure at the base of the nozzle is 625 KPa: compute the discharge in m3/min; the maximum horizontal range to which the stream can be thrown; the maximum vertical reach, and the diameter of the jet at a point two-third of the maximum vertical reach from the tip of the nozzle. Neglect air resistance.arrow_forward
- FLOW THROUGH PIPELINE PROBLEM Process water is pumped from the main storage tank (A) to process tanks (B) and (C). The pipeline from main storage tank (A) to the centrifugal pump inlet is 3-inch Schedule 40 commercial steel pipe, with an equivalent length of 61 meters. The line from the centrifugal pump discharge to the tee (entry into leg) where the pipeline branches is also 3-inch Schedule 40 pipe, with an equivalent length of 30.5 meters. The pipeline from the tee to process tank (B) is 1.5-inch Schedule 40 pipe, with an equivalent length of 183 meters. The pipeline from the tee to process tank (C) is 2-inch Schedule 40 commercial steel pipe, with an equivalent length of 183 meters. The equivalent lengths as given do not include four (4) gate valves, one (1) between storage tank (A) and the centrifugal pump, one (1) between the centrifugal pump and the tee, and one (1) each at process tanks (B) and (C); and two (2) globe valves (bevel seat), globe valve “X” in line from the tee to…arrow_forward5. A nozzle meter is to be designed to fit into an 18-in. galvanized pipe. Air at room temperature flows through the pipe at velocities varying from 700 to 1400 ft per min. If a 2-in. inclined manometer containing alcohol with a S.G. of 0.89 is to be used with the nozzle, what should be the diameter of the nozzle?arrow_forwardGive the isometric configuration of the typical piping system of a pump installation using standard symbols for required valves and fittings. Draw according to valid practice and label the parts.arrow_forward
- The head loss due to friction is not proportional to length of the pipe. Select one: True Falsearrow_forwardProblem Statement Water at 60°F and one atmosphere is being transferred from tank 1 to tank 2 with a 2-hp pump that is 75% efficient, as shown in Figure 8-7. All the piping is 4-inch schedule 40 steel pipe except for the last section, which is 2-inch schedule 40 steel pipe. All elbows are 4-inch diameter, and a reducer is used to connect to the 2-inch pipe. The change in elevation between points 1 and 2 is z2 - z1 = 60 ft. Tank 1 6 ft 4-inch 15 ft 4-inch 300 ft 4-inch 150 ft 4-inch Pump Tank 2 = 90° Elbow = Reducer All piping is schedule 40 steel with diameters given. Figure 8-7 Pipe and Pump Network Calculate the expected flowrate in gal/min when all frictional losses are cor Repeat part (a) but only consider the frictional losses in the straight pipe a. Calculate the expected flow rate in gal/min when all frictional losses are considered. b. Repeat part (a) but only consider the frictional losses in the straight pipes. c. What is the % error in flow rate for part (b) relative to part…arrow_forward5. Oil of specific gravity 0.750 is pumped from a tank over a hill through a 24′′ pipe with the pressure at the top of the hill maintained at 25.5 psi. The summit is 250 ft above the surface of the oil in the tank, and oil is pumped at the rate of 22.0 cfs. If the lost head from tank to summit is 15.7 ft, what horsepower must the pump supply to the liquid? indicate free body diagramarrow_forward
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