5.119 Water is to be pumped from the large tank shown in Fig. P5.119 with an exit velocity of 6 m/s. It was determined that the original pump (pump 1) that supplies 1 kW of power to the water did not produce the desired velocity. Hence, it is proposed that an additional pump (pump 2) be installed as indicated to increase the flowrate to the desired value. How much power must pump 2 add to the water? The head loss for this flow is h, = 250 Q², where h, is in m when Q is in m/s. Nozzle area = 0.01 m2 Pipe area = 0.02 m² 6 m/s

5.119 Water is to be pumped from the large tank shown in Fig. P5.119 with an exit velocity of 6 m/s. It was determined that the original pump (pump 1) that supplies 1 kW of power to the water did not produce the desired velocity. Hence, it is proposed that an additional pump (pump 2) be installed as indicated to increase the flowrate to the desired value. How much power must pump 2 add to the water? The head loss for this flow is h, = 250 Q², where h, is in m when Q is in m/s. Nozzle area = 0.01 m2 Pipe area = 0.02 m² 6 m/s

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Water is fed to an inward flow reaction turbine, running at 180 rpm with a velocity of flow of 3 m/s. The diameter and width of the wheel at inlet are 1 m and 135 mm, respectively. Assuming the velocity of flow to be constant and radial discharge at inlet and outlet, find, (a) work done per kN of water, (b) power developed by the turbine, (c) head of water on the turbine, and (d) hydraulic efficiency of the turbine. Also, draw velocity triangles showing all details.
You only know one point on a pump curve, where a water pump produces 20 m of hydraulic head at flow rate of 3.67 L/s, and you want to use this to pump water from a lower tank to an upper tank located 15 m higher. Both tanks are open to the atmosphere. Briefly explain your reasoning, in 1‐2 sentences, for each of the following. a) Should this pump be placed next to the lower tank or the higher one? b) Given the data point you have from the pump curve, will the flow rate be higher or lower than 3.67 L/s if the water is pumped exactly 15 m uphill?
A two-lobe rotary positive-displacement pump moves 0.60 cm3 of motor oil in each lobe volume. For every 90° of rotation of the shaft, one lobe volume is pumped. If the rotation rate is 550 rpm, the volume flow rate of oil is (a) 330 cm3 /min (b) 660 cm3 /min (c) 1320 cm3 /min (d) 2640 cm3 /min (e) 3550 cm3 /min
(a) A substance flows through a turbine at the rate of 100 lb./min with ΔKE = 0 and Q = 0. At entry, its pressure is 175 psia, its volume is 3.16 ft.3/lb., and its internal energy is 1166.7 BTU/lb. At exit, its pressure is 0.813 psia, its volume is 328 ft.3/lb., and its internal energy is 854.6 BTU/lb. What horsepower is developed? (b) The same as (a) except that the heat loss from the turbine is 10 BTU/lb. of steam.
The velocity of water and pressure at the suction side of a pump is 4m/s and 90kPa respectively. If the velocity of water is 8m/s and the pressure is 140kPa on the discharge side of a pump, what is the head added by the pump?
An inward flow reaction turbine has an external and internal diameters of runner 67.5 cm and 50 cm, respectively, and corresponding widths or breadths 15 cm and 22.5 cm, respectively. The effective head is 21 m. If the velocity of flow at inlet is 3 m/s and the guide vane angle is 12°, the runner vane is radial at inlet. Assume that the turbine discharges radially at outlet also. A. Find the outlet vane angle, in degree. B. Find the Power developed, in kilowatts.
A cylindrical tank with a large diameter is filled with water to a depth D = 0.402 m. A hole of cross-sectional area A = 5.26 cm2 in the bottom of the tank allows water to drain out. (a) What is the rate at which water flows out, in cubic meters per second? (b) At what distance below the bottom of the tank is the cross-sectional area of the stream equal to one-half the area of the hole?
1) A plot of pump net head is shown below. Two curves are drawn: blue color curve and red color curve. Which one is called pump performance curve? Will the location of pump performance curve change if the velocity of the fluid at pump outlet changes? a) red curve; No, the location will not change b) blue curve; yes, the location will change c) red curve; yes, the location will change d) blue curve; No, the location will not change 2) In a turbine system, states A and B are homologous. If the net head ratio HA/HB =16 , volume flow rate ratio VA˙/VB˙=9. What is the diameter ratio DA/DB ? a) 3/2 b) 6 c) 12 d) 2/3
Steady-state flow exists in a pipe that undergoes a gradual expansion from a diameter of 6 in. to a diameter of 8 in. The density of the fluid in the pipe is constant at 60.8 lbm/ft3. If the flow velocity is 22.4 ft/sec in the 6 in. section, what is the flow velocity in the 8 in. section?
The original design of a hydraulic turbine has data as follows: flow rate of 1 cumex, effective head of 50 m, and runner diameter of 1.5 m. If the same turbine design is to be used in another application where the available flow is 2.5 cumex and effective head is 75 m, what would be the runner diameter (in meters) for this new application?
The impeller diameter of a centrifugal pump used in water pumping is 250 mm, the inlet radius of the water to the impeller blades is 25 mm, and the outlet radius is 10 mm. The inlet angle of water to the blade is 30°, and the outlet angle from the blade is 25°. The blade inlet width is 10 mm, and the outlet width is 5 mm. Given that the pump's rotation speed is 1800 rpm; a) Find the flow rate of the water passing through the pump?b) Find the required shaft power for the pump under ideal conditions?c) Find the pump's discharge head under ideal conditions?
Suppose that you are willing to determine the diameter of the water jet impinging to the sink from the kitchen tap.The tap is produced to supply three different flow rates of the low, medium, and high. For each flow rate level, waterthat comes from the tap fills the beaker with a volume of 30 mL in 10 s, 6 s, and 2 s, respectively. The outlet of the tapis 13 mm, and the distance between the tap outlet and the sink is 53 mm. Determine the diameters of the water jetimpinging on the sink at three given flow rates.