m2/s? If the velocity of water is 8 m/s and the pressure is 140 kPa on the discharge side of a pump, a) what will be the head of the pump if the velocity is 4 m/s and the pressure is 90 kPa on the suction side of the pump? b) how much power is required to drive it if the diameter of the suction side is 600 mm? c) If the pump is rated at 120 hp, what is the efficiency of the pump neglecting energy losses in the system?

m2/s? If the velocity of water is 8 m/s and the pressure is 140 kPa on the discharge side of a pump, a) what will be the head of the pump if the velocity is 4 m/s and the pressure is 90 kPa on the suction side of the pump? b) how much power is required to drive it if the diameter of the suction side is 600 mm? c) If the pump is rated at 120 hp, what is the efficiency of the pump neglecting energy losses in the system?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Oil flows at the rate of 0.22 m/s in a 500 mm diameter pipeline 500 m. long. Specific gravity of oil is 0.86. Neglecting minor losses and f = 0.018, compute the power loss in kW. Do not write the unit. You will only input the numerical answer in the space provided. Unit of the Correct Answer: kW Decimal Places required in the final answer: 3
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A cylindrical tank, containing water, with a diameter of 3 m and a water level of 5 m is to be drained. Calculate : 1.The time taken in minutes to empty the tank if two orifices in the bottom with a diameter of 50 mm and coefficient of discharge Cd=0.785 2.the time taken in minutes to empty the tank, if a pipe with internal diameter of 50 mm, length of 6 m and coefficient of friction of 0,008,respectively, and the outlet 2 m below the bottom. 3.the time taken in minutes to empty the tank, if a pipe with internal diameter of 50 mm and length of 6 m respectively, an outlet 4 m below the bottom,and a valve with a loss factor of 2,8. Kindly note there's no diagram I can provide it's just those questions.
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A. For the system shown in the figure, select the proper pump that has the best efficiency to raise 12 m³ of water from the lower tank to the upper one. The time targeted for the process to be completed at least in 60 mins. The pump is located at zero elevation. Make your calculations at the minimum allowed depth in the lower tank (i.e. 1 m). What would be the efficiency and actual flow rate? Head (m) 35 30 25 20 15 B. Using your recommended pump, how long does it take the pump to elevate 12 m³ if the water level in the lower tank is fixed at 3 m. 40 10 5 0 - 0 Pump 3 Pump 2 Pump 1 0.001 Max: +3 m 0.002 Min: +1 m I I 60% 70% 80% 90% T I 1 I I + T 1 I I + I CHw = 150 D = 100 mm 0.003 Flow (m³/s) T I I + 1 T L=10 m +16 m 0.004 L = 16 m ooo oo ロロ 0.005 0.006
1. If the pump removes 12 ft/min of water from a tank, how long will it take to empty the tank if it contains 20000 lb of seawater @ 25°C? 2. A standard schedule 40 steel pipe is to be selected to carry 10 gal/min of water with a maximum velocity of 1 ft/s. what size pipe should be used (inches)? 3. A venturi meter is a device that uses a constriction in a flow system to measure the velocity in flow. The figure below illustrates one type of design. If the main pipe section is a standard hydraulic copper tubing having an outside diameter of 80 mm and a wall thickness of 2.5 mm wall thickness, compute the flow rate when the velocity is 4 m/s. Then, for that volume flow rate, specify the required size of the throat section that would make the velocity there at least 15 m/s. Main pipe section 1 Throat section 2 Main pipe section 3 Flow Manometer
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Fluid mechanics
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A centrifugal pump with an overall efficiency of 0.56 rotates at 1650 rpm. The flow is purely radial at the inlet of the rotor. The pump has the following characteristics: Flow rate Q = 72 L/s Inlet diameter D1 = 90 mm Outlet diameter D2 = 280 mm Head H = 25m Width at the inlet b1 =20 mm Width at the outlet b2 = 18 mm Leakage q = 2 L/s Mechanical loss Pm = 1.41 kW Blade angle at the outlet β2 = 35 ͦ The water density =998 kg/m^3,Atmospheric pressure 101 kPa a) Determine the hydraulic, mechanical and volumetric efficiencies. b)Determine the minimum number of blades required for the slip to not exceed 0.9. c)Determine the static pressure difference (P2-P1) through the impeller by using Bernoulli equation. d) Determine the available NPSH if the pump is placed 2m above the free surface of the tank and the vapor pressure is ?=2.43 ???.