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Fundamentals Of Hydraulic Engineering Systems 4th Edition Robert J. Houghtalen, A. Osman H. Akan, Ned H. C. Hwang - Solutions

Water at 68°F flows at the rate of 628 cfs (ft3/sec) through 100 feet of horizontal corrugated metal pipe 10 ft in diameter. Determine the friction factor and flow regime (i.e., laminar, critical zone, turbulent; transitional zone, turbulent; smooth pipe; or turbulent, rough pipe).
A homeowner is interested in supplying water (20°C) to her woodshop that is about 30 m from her house. However, she is concerned about the lack of water pressure. Calculate the pressure drop, can expect for a flow rate of 10 liters per minute through a 1.5-cm copper pipe. Assume minor losses are
A 15-in. galvanized iron pipe is installed on a 1/50 slope (uphill) and carries water at 68°F (20oC). What is the pressure drop in the 65-ft-long pipe when the discharge is 18 cfs (ft3/sec)? Assume minor-losses are negligible.
The commercial steel (seamless) pipeline depicted in Figure P3.5.5 is 100 m long and has a diameter of 0.4 m. Determine the height of the water tower (h) if the velocity of flow is 7.95 m/sec. Assume minor losses are negligible and the water temperature is 4°C.Figure P3.5.5
A 30-cm circular cast-iron pipe line, 2 km long, carries water at 10°C. What is the maximum discharge if a 4.6-m head loss is allowed?
Two sections, A and B, are 4.5 km apart along a 4-m-diameter riveted-steel pipe in its best condition. A is 100 m higher than B. If the water temperature is 20°C and the pressure heads measured at A and B are 8.3 m and 76.7 m, respectively, what is the flow rate? Assume minor losses are negligible.
A smooth concrete pipe (l.5-ft diameter) carries water from a reservoir to an industrial treatment plant 1 mile away and discharges it into the air over a holding tank. The pipe leaving the reservoir is 3 ft below the water surface and runs downhill on a 1: 100 slope. Determine the flow rate (in
Drawings to an old buried pipeline have been lost. At the entrance and exit of the pipe, two pressure gauges measure a pressure drop of 16.3 psi (lb/in.2). If the 6-in. galvanized iron pipe carries water at 68°F with a flow rate of 1.34 cfs (ft3/sec),/what is the length of the horizontal
A 6-km cast-iron (new) pipel.ine conveys 320 Lisee of water at 30°C. If the pipe diameter is 30 cm, compare the head loss calculated from (a) The Darcy-Weisbach equation, (b) The Hazen-Williams equation. and (c) The Manning equation. Use computer software to verify your results.
A proposed 2-mile pipeline is required to carry 77 .6 ft3/sec of water at 4°C (39oF) between two reservoirs. The receiving reservoir is located near Denver, Colorado, with a water surface elevation of 5.280 ft MSL. The supply reservoir is being constructed in the foothills with an estimated water
Two reservoirs 1,200 m apart are connected by a 50-cm smooth concrete pipe. If the two reservoirs have an elevation difference of 5m, determine the discharge (20°C) in the pipe by (a) The Darcy-Weisbach equation, (b) The Hazen-Williams equation, and (c) The Manning equation. Assume minor losses
Do some research to find two or three additional empirical equations involving head loss in pipe-lines. List the author(s) and limitations of each equation.
Use the Hazen-Williams equation and the Manning equation to calculate the flow rate for Problem 3.5.7. which was solved using the Darcy-Weisbach equation and yielded Q = 78.8 m3/sec. Compare the results and discuss the differences. Assume minor losses are negligible and verify your results with
A buried horizontal concrete pipe (n = 0.012) of unknown length needs to be replaced. The length not known because the original plans for the pipeline route have been lost. The pressure head drop along the segment that needs to be replaced is 29.9 ft If the flow rate is 30.0 cfs ft3/sec}, what
The elevation difference between two reservoirs 2,000 m apart is 20 m. Compute the flow rate if (a) A 30-cm commercial steel (CHw = 140) pipeline connects the reservoirs and (b) Two 20-cm commercial pipelines are used instead. Ignore minor losses and verify your results with computer software.
A concrete tunnel (n = 0.013) with a semicircular cross section (radius = 1.0 ft) flows full with a discharge of 15 cfs (ft3/sec). What is the head loss in 1,200 ft? Can you verify your results with computer software?
A cast-iron, horizontal pipeline was installed 20 years ago with a Hazen-Williams coefficient of 130. The pipeline is 2,000 m long and has a diameter of 30 cm. significant tuberculation has occurred since it was installed, and tests are run to determine the existing CHw. A pressure drop of 366,000
Examine the EGL and HGL in Figure 4.1 and explain the following: (a) The location of the EGL at the reservoirs (b) The drop in the EGL moving from reservoir A into pipe 1 (c) The slope of the EGL in pipe l (d) The separation distance between the EGL and the HGL (e) The drop in the EGL moving from
An irrigation company must transport 5.71 x 10-2 m3/sec of water (20°C) from reservoir A to reservoir B. The reservoirs are separated by 600 m and have an elevation difference of 18.4 m. Determine the diameter pipe required if the relative roughness of the pipe material is 0.36 mm. (Include minor
A 75-ft pipe must transport 2.5 cfs of 40°F water from a head tank to a cooling pond. The elevation difference between the tank and the pond is 4.6 ft. Determine the size of the commercial steel pipe that is required. Assume square-edged connections and include a globe valve in the pipe.
It is necessary to deliver 5 L/min of a water-glycerol solution (sp gr. = l.l ; v = l.03 × 10-5 m2/ sec) under a pressure head of 50 mm Hg. A glass tube is used (e = 0 .003 mm). Determine the tube diameter if the tube length is 2.5 m. Assume the pressure head (50 mm Hg) is needed to overcome the
The 40-m-long, 4-in. commercial steel pipe connects reservoirs A and B as shown in Figure P4.l.6. lf the pressure at point I is 39.3 kPa, what is the pressure P0 at reservoir A? Assume the water is at 20°C, all valves are fully open, and bend losses are negligible.
All the pipes in Figure P4.1.14 have a Hazen-Williams coefficient of 100. Pipe AB is 3, 000 ft long and has a diameter of 2.0 ft. Pipe BC1 is 2,800 ft long with a diameter of 1.0 ft, and pipe BC2 has a length of 3,000 ft and a diameter of l.5 ft. Pipe CD is 2,500 ft long with a diameter of 2.0 ft.
Redo Problem 4.1.14 with QB = 8 cfs and Qc = 8 cfs. Should the discharge in AB in this case be greater or less than that of Problem 4.1.14? Why?Problem 4.1.14All the pipes in Figure P4.1.14 have a Hazen-Williams coefficient of 100. Pipe AB is 3, 000 ft long and has a diameter of 2.0 ft. Pipe BC1 is
Sketch the energy grade line and the hydraulic grade line for the pipeline shown in Figure P4.l.2. Consider all the losses and changes of velocity and pressure heads.Figure P4.l.2
Often the iterative procedure encountered in pipeline problems can be shortened by assuming complete turbulence in the pipe (if e/D is available) to obtain a prelim inary friction factor. This assumption is often valid for water-transmission systems because the viscosity of water is low and the
At a water-treatment plant, water (68°F) flows from tank A to tank B at a rate of 0 .50 cfs through a 3-in.-diameter, cast-iron pipe that is 200 feet long. Determine the difference in water surface elevation between tanks (open to the atmosphere) if there are two bends (RID = 2.0) and a fully open
Determine the elevation of the upstream reservoir (A) in Figure P4. l .2 if the downstream reservoir (B) is at 750 m, the flow rate (water at 20°C) through the smooth concrete pipeline is 1.2 m3/ sec, given the following: Pipes l and 2: 100 m long (D = 0.5 m) Expansion 2- 3: D = 0.5 m to 1.0
The 40-m-long, 4 -in. commercial steel pipe connects reservoirs A and Bas shown in Figure P4. l .6. Determine the pressure at each point designated in the figure if the water flow is 10. 1 liters/sec (20°C), reservoir A is subjected to a pressure of 9.79 kPa (gauge), all valves are fully open,
The 40-m-long, 4-in. diameter commercial steel pipe connects reservoirs A and Bas shown in Figure P4.l.6. The water temperature is 20°C. Determine the flow rate (liters/sec) if reservoir A is subjected to atmospheric pressure, the globe valve is fully open, and bend losses are negligible.
A 40-cm straight pipe is used to carry water at 20°C from reservoir A co reservoir B that is 0.7 km away. There is an elevation difference of 9 m between the two reservoirs. Determine the discharge for the following pipes: (a) commercial steel, (b) cast iron, and (c) smooth concrete. Determine the
Water flows from tank A to tank B (Figure P4.1.9), and the water surface elevation difference is 60 feet. Assume the water temperature is 68°F, the pipe material is cast iron, and the pipeline has the following characteristics:Large pipe: l,000 ft long(D = 16in.)Bends: four (R/D = 4 in large
After flows in a new 20-cm, 300-m-long ductile iron pipe between reservoirs A and B, as shown in Figure P4.2.l. The pipe is elevated at S, which is 150 m downstream from reservoir A. The water surface in reservoir B is 25 m below the water surface in reservoir A. If ˆ†s = 7.0 m, is
Water flows in a new 20-cm-diameter, 300-m-Jong ductile iron pipe between reservoirs A and B, a~ shown in Figure P4.2.l. The pipe is elevated at S, which is 150 m downstream from reservoir A. The water surface difference between the two reservoirs is 25 m. Determine the head that should be provided
A 40-m-long, 4-in. commercial steel pipe connects reservoirs A and Bas shown in Figure P4.1.6. Determine the minimum pressure (P0) that would keep the pressure head throughout the pipe positive. Assume all value are fully open. bend losses are negligible, and the water temperature is 20°C.
A 12-cm-diameter tube is 13 m long and used to siphon water from the reservoir and discharge it into the air, as shown in Figure P4.2.2. If the total head loss between the intake end of the tube and the summit, S, is 0. 8 m and between Sand the discharge end is 1.8 m, what is the discharge of the
A siphon spillway, as shown in Figure P4.2.3, is 200 feet long with a diameter of 2 feet. It is used to discharge water (68°F) to a downstream reservoir 50 ft below the upstream reservoir. The friction losses in the rough concrete siphon are evenly distributed throughout its length. If the
Do all siphons encounter negative pressure at their summits? Prove your answer by using an energy grade line and a hydraulic grade line sketch on Figure P4.2.2.Figure P4.2.2
A confusor is installed in a 40-cm pipe. Immediately upstream from the confusor the water pressure is 84,000 N/m2. Determine the minimum diameter of the confusor outlet that will keep the pressure head at the outlet above -8 m when the flow rate is 440 Lisee. (The -8 m of gauge pressure is the
A pump draws water from reservoir A and lifts it to a higher reservoir B, as shown in Figure P4.2.6. The head loss from A to the pump is four times the velocity head in the 10 cm pipe, and the head Joss from the pump to B is seven times the velocity head. The pressure head at the inlet of the pump
A pump is installed in a I 00-m pipeline to lift water at 20°C from reservoir A to reservoir B (see Figure P4.2.6). The pipe is rough concrete with a diameter of 80 cm. The design discharge is 5 m3/sec. Determine the maximum distance from reservoir A that the pump could be installed without
A pump installed at an elevation of l0 ft delivers 8 cfs of water (68°F) through a horizontal pipe system to a pressurized tank. The water surface elevation in the receiving tank is 20 ft, and the pressure at the top of the tank is 32. 3psi. The ductile iron pipe has a 15-in. diameter on the
An emergency pump is installed in the pipeline system of Example 4.4 at a distance of 500 m from reservoir A. The pump is used to boost the flow rate when needed. Determine the pressure head the pump must add to the pipeline to double the flow rate.
When solving a three-reservoir problem, it is advantageous to set the total energy elevation, P, at the junction to match exactly with the elevation of the middle reservoir for the first iteration.
Determine flow rates in the branching pipe system depicted in Figure P4.3.2 given the following water surface (WS) elevation and pipe data (lengths and diameters): ..All of the pipes are lined ductile iron (DIP, e = 0.0004 ft), and the temperature of the water is 68 °F. Also determine the
Determine flow rates in the branching pipe system depicted in Figure P4.3.2 given the following WS elevation and pipe data (lengths and diameters):All of the pipes are commercial steel (e = 0.045 mm), and the temperature of the water is 20°C. Also determine the pressure head (P/y) at the junction
Solve Problem 4.3.2 using the Hazen-Willia.ms equation (CHw = 140 for lined ductile iron) for friction losses instead of the Darcy-Weisbach equation.Problem 4.3.2Determine flow rates in the branching pipe system depicted in Figure P4.3.2 given the following water surface (WS) elevation and pipe
Solve Problem 4.3.2 using the Manning equation (n = 0.011 for ductile iron) for friction losses instead of the Darcy-Weisbach equation.Problem 4.3.2Determine flow rates in the branching pipe system depicted in Figure P4.3.2 given the following water surface (WS) elevation and pipe data (lengths and
The highest reservoir in a three-reservoir branching system is inaccessible after a mountain storm. Determine the surface elevation of this reservoir given the following water surface elevation and pipe data (lengths and diameters):All of the pipes are rough concrete (e = 0. 6 mm), so complete
A long pipeline carries 75.0 cfs of water from reservoir 1 to junction J, where it is distributed into pipes 2 and 3 and transported to reservoirs 2 and 3. Determine the surface elevation of reservoir 3, given the following WS elevation and pipe data (lengths and diameters):All of the pipes are
Two rooftop cisterns supply a tropical bungalow with shower water. The water surface in the uppermost cistern (A) is 8 m above the ground, and the water surface in the lower cistern (B) is 7 m above the ground. They both supply water to a junction below the lowest cistern's water surface through
Refer to Example 4.8 to answer the following questions.(a) Determine the pressure at junction F by accounting for pressure drops in pipes AB, BC, CH, and HF. (Recall that in Example 4.8 we arrived at the pressure at F by a different sequence of pressure drops.) Comment on your answer.(b) Where is
Using computer software, determine the flow rate (water at l 0 °C) and head loss in each cast-iron pipe in the network shown in Figure P4.4.10. The demands on the system are currently at junctions C(0.030 m3/sec), D(0.250 m3/sec), and H(0.120 m3/sec). Water enters the system at junctions
For Problem 4.4.10, use computer software and the Hazen-Williams equation instead of the DarcyWeisbach equation to solve for the flows.Problem 4.4.10Using computer software, determine the flow rate (water at l 0 °C) and head loss in each cast-iron pipe in the network shown in Figure P4.4.10.
A planning study is being proposed for the pipe network of Example 4. 10. In particular, the water company wants to determine the impact of increasing the outflow at junction F from 0.25 m3/sec to 0.30 m3/sec. Although there is an adequate supply of water to meet this demand, there is a concern
Using the Newton method and appropriate computer software, analyze the pipe network in Figure P4.4.13 if HA = 190ft, HE = 160ft, HG; = 200ft, QB = 6.0cfs, QC = 6.0cfs, QD = 6cfs, and QF = 12.0 cfs. Suppose the K = 1.0 sec21ft5 for pipes 1, 7, and 8 and 3.0 sec21ft5 for the other pipes. Use initial
The total discharge from A to Bin Figure P4.4.2 is 50.0 cfs (ft 3/sec). Pipe 1 is 4,000 ft long with a diameter of 1.5 ft, and pipe 2 is 3,000 ft long with a diameter of 2 ft. Using (a) Hardy-Cross principles and (b) the method of equivalent pipes, determine the head loss between A and B and the
The total discharge from A to B in Figure P4.4.2 is 12 liters/sec. Pipe 1 is 25 m long with a diameter of 4 cm, and pipe 2 is 30 m long with a diameter of 5 cm Using (a) Hardy-Cross principles and (b) the method of equivalent pipes, dete1mine the head loss between A and B and the flow rate in each
An industrial water-distribution system is schematically shown in Figure P4.4.4. The demands on the system are currently at junctions D (0.550 m3/sec) and E (0.450 m3/sec). Water enters the system at junction A from a storage tank (surface elevation of 355.0 m). All pipes are concrete (e = 0.36 mm)
Solve Problem 4.4.4 using the Hazen-Williams equation instead of the Darcy-Weisbach for friction losses. Let CHw = 120 for the concrete pipes.Problem 4.4.4An industrial water-distribution system is schematically shown in Figure P4.4.4. The demands on the system are currently at junctions D (0.550
The three-loop water-distribution system in Example 4.8 is not functioning effectively. The demand for water at junction F is being met but not at the pressure required by the industrial customer. The water company has decided to increase the diameter of one pipe in the network by 5 cm. Determine
A three-loop water-distribution system is depicted in Figure P4.4.7. The demands on the system are currently at junctions C(6.00 cfs), D (8.00 cfs) and E (11.0 cfs). Water enters the system at junction A from a storage tank with a pressure of 45 psi. Using the pipe network data in the table below,
The two-loop water-distribution system in Example 4.9 is not functioning effectively. The demand for water at junction F is being met but not at the pressure required by the industrial customer. (The industrial customer would like to have a pressure head of 14 m on the water delivered.) The water
Verify that Equation 4.l7b is the proper flow correction equation when the Hazen-Williams formula is used for friction head Joss instead of the Darcy-Weisbach formula (i.e., derive Equation 4. 17b).
The pressure head rise caused by water hammer can be evaluated by using Equation 4.26. Review the derivation and answer the following questions. (a) What concepts (fundamental principles) are used in the derivation? (b) What limitations are placed on the use of the equation?
Derive Equation 4.21 from Equation 4.25b.
A 500-m long pipeline carries oil (sp. gr. = 0. 85) from a storage tank to the bold of an oil tanker. The 0.5-m-diameter steel pipe has expansion joints and a wall thickness of 2.5 cm. The normal discharge rate is 1.45 m3/sec, but it can be controlled by a valve at the end of the pipeline. The
A 2,400-ft-long, 2-ft-diameter pipeline conveys water from a hilltop reservoir to an industrial site. The pipe is made of ductile iron, has an outside diameter of 2. 25 feet, and has expansion joints. The flow rate is 30 cfs. Determine the maximum water hammer pressure (in psi) that is likely to
A horizontal pipe 30 cm in diameterand 420 m long has a wall thickness of l cm. The pipe is commercial steel and carries water from a reservoir to a level 1 00 m below and discharges into the air. A rotary valve is installed at the downstream end. Calculate the maximum water hammer pressure that
A 0.5-m-diametcr concrete pipe (5.0 cm wall thickness with rigid pipe walls) carries water 600 m before discharging it into another reservoir. The surface elevation of the downstream reservoir is 55 m lower than the supply reservoir. A gate valve just upstream of the lower reservoir controls the
An emergency drawdown structure for a reservoir consists of a 1,000-ft long, 1.0-ft diameter, steel (commercial) pipe with a wall thickness of 0.5 inches. A gate valve is located at the end of the pipe. If the valve is closed suddenly, determine the maximum water hammer pressure that will develop
A pipeline is being designed to withstand a total maximum pressure of 2.13 × 106 N/m2. The 20-cm pipeline is ductile iron and conveys water at 40 L/sec. Determine the required thickness of the pipe wall if the operational head on the pipeline is 40 m and also subject to water hammer if the flow
A 700-m-long, 2.0-m-diameter steel penstock conveys water from a reservoir to a turbine. The reservoir water surface is l 50 m above the turbine, and the flow rate is 77. 9 m3/sec. A gate valve is installed at the downstream end of the pipe. Determine the wall thickness to avoid damage to the
Determine the wall thickness in Problem 4.5.8 if the valve closes in 60 sec and the pipe walls are assumed to be rigid. Problem 4.5.8 A 700-m-long, 2.0-m-diameter steel penstock conveys water from a reservoir to a turbine. The reservoir water surface is l 50 m above the turbine, and the flow rate
By using logic, sketches, and relevant design equations, answer the following questions about (a) Does a surge tank eliminate elevated pressures because of water hammer in the entire pipeline? If not, what portions of the pipeline will still be subject to some increase in pressure? Refer to Figure
Review Example 4.13. Determine the size of the surge tank required if the allowable water surface rise is 7.50 m.
A 425-m-long, commercial steel pipe with a 0.90 m diameter carries irrigation water between a reservoir and a distribution junction. The maximum flow is 2.81 m3/sec. A simple surge tank is installed just upstream from the control valve to protect the pipeline from water hammer damage. Compute the
Water flows from a supply reservoir (surface elevation, 450 ft, MSL) through a 2,500-ft horizontal pipeline at a rate of 350 cfs. A surge tank is required to be installed in the pipeline before a gate valve. The pipeline is made of smooth concrete and has a 6-ft diameter. Determine the required
Determine the minimum diameter of the surge tank in Problem 4.6.3. if the allowable water surface rise is 5 mover the supply reservoir water level.
A court case involving pipeline damage hinges on knowing the flow rate at the time of valve closure. A simple surge tank was operational in a 1,500-m-long pipeline to protect a turbine, but the flow gauge had malfunctioned. The pipeline is 2 min diameter and made of rough concrete. If a 5-mrise was
A centrifugal pump is installed in a pipeline between two reservoirs. The pump is required to produce a flow rate of 2,500 gpm (gallons per minute) in moving water from the lower reservoir to the upper reservoir. The water surface elevations of the two reservoirs are separated by 104 feet, and the
A pump is needed to quickly drain a small pond before the earth dam fails. Water must be pumped over the top of the dam, which is about 2 m above the water surface. The only pump available is an old 10-cm diameter propeller pump. The power requirement for the motor is 1,000 watts, and the pump
A pump is installed in a 100-m pipeline to raise water 20 m from reservoir A to reservoir B. The pipe is rough concrete with a diameter of 80 cm. The design discharge is 2.06 m3/sec. Determine the overall efficiency of the pump system if the power requirement for the motor is 800 kW.
Answer the following questions about pumps.(a) Referring to Figure 4.3, balance energy between positions J and 4. Solve for Hp and describe what the energy head added by the pump accomplishes physically in the system. (b) Referring to Figure 4.3, balance energy between positions 2 and 3. Solve for
A pump impeller has an outside radius of 50 cm, an inside radius of 15 cm, and vanes with a uniform opening (width) of 20 cm. When the impeller is rotated at an angular speed of 450 rpm, water exits from the impeller with an absolute velocity of 45 m/ sec. The angle of the exiting water is 55
A centrifugal water pump runs at 1,800 rpm and has an out5ide radius of 12 in. ( β0 = 170°) , an inside radius of 4 in. ({βo = 160°) , and an impeller thickness (width) of 2 in. at r = ri and ~ in. width at r = r 0 • Determine the pump flow rate for a shockless entry (i.e., a I = 90°) and
A centrifugal pump has the following specifications: a uniform impeller thickness of 4 in., an inlet radius of l ft, an outlet radius of 2.5 ft, βi = 120°, and β = 135°. The pump delivers a flow rate of 70 cfs (ft3/sec) in overcoming a head of 33 ft. If the pump rotates at such a speed that no
A centrifugal pump is being tested in a laboratory. The inside and outside radii of the impellers are 7 .5 cm and 15.0 cm, respectively. The width of the impeller vanes (or flow opening height) varies from 5.0 cm at intake to 3.0 cm at outflow. If the measured flow rate is 55 liters/ sec, what is
Answer the following questions about specific speed and pump similarity.(a) Using both U.S. and Sl units, show that the shape number given in Equation 5.24 is dimensionless.(b) Is specific speed a dimensionless number (Equations 5.25 and 5.26)?(c) Is it possible to derive Equation 5.25 from
A geometrically similar pump of the same design as in Example 5.9 has an impeller diameter of 72 cm and the same efficiency when operated at 1,720 rpm (revolutions per minute). Determine the pump head and shaft power required to operate the pump if the discharge is l 2. 7 m3/sec.
The specific speed of a pump is rated at 68.6 (based on unit discharge) and 240 (based on unit power). Jn a specific operation, the flow rate is 0. 15 m3/sec when the pump is operating at l , 800 rpm. Determine the efficiency of the pump.
A pump is required for a U.S. fie ld application with the following specifications: a flow rate of I 2.5 cfs (ft 3/ sec) against a head of 95 ft. To design the pump, a model is built with a 6 in. diameter impeller and tested under optimum conditions. The test results show that at aspeed of I , 150
The design of a centrifugal water pump is studied by a 1/ 10 scale model in a hydraulic laboratory. At the optimum efficiency of 89 percent the model delivers 75.3 L/ sec of water against a 10-m head at 4,500 rpm. If the prototype pump has a rotational speed of 2,250 rpm, what is the discharge and
Referring to Example 5. 11 , plot the system head curve with a spreadsheet program. On the same graph, plot the pump characteristic curve for pump III at a speed of 3,850 rpm. Now answer the following questions.(a) What is the shape of the system curve? Why does it take this shape?(b) What is the
A pump is required to deliver 0. 125 m3/sec of water (20°C) from reservoir A to reservoir B (water surface elevations of 385. 7 m and 402.5 m, respectively). The pipeline (concrete) is 300 m long with a diameter of 0.20 m and contains five bends (R/D = 6) and two gate valves. Determine the
A pump is required to deliver 20°C water to an elevated storage tank. The water must be raised 44 m, and a I 50-m-long, ductile-iron pipe, 35 cm in diameter, is to be used. Determine the appropriate pump speed (based on the highest efficiency obtainable) and the operating conditions if pump Ill
Select two different pumps (model and rotational speed) from Figure 5.24 that are capable of supplying water (20°C) to a reservoir at a flow rate of 30 L/sec. The water must be raised 20 m. and the di stance between the supply and receiving reservoirs is I 00 m. A ball check valve is used with
Determine the working conditions (HP, Q, e, and Pi) of a pump capable of moving water (6 8°F) C7from reservoir A to reservoir B (EA = 102 ft and E8 = I 80 ft ). The LO-ft -diameter pipe connecting the two reservoirs has a length of 8,700 ft, and Cmv = 100. The pump characteristics are available in
A project requires a pump that will operate with a minimum discharge of 20 L/ sec against an elevation head of 40 m. The distance between the supply and delivery points is l 50 m. A ball check valve will be used in the system that consists of commercial steel pipes. Determine the most economical
A pump station is required to deliver 20°C water from a reservoir to an elevated srorage tank at a minimum required discharge of 300 L/ sec. The difference in elevations is 15 m, and a 1,500-m-long, wrought-iron pipe that is 40 cm in diameter is used. Select the pump(s) from the set given in

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