ENGINEERING FUNDAMENTALS
6th Edition
ISBN: 9781337705011
Author: MOAVENI
Publisher: CENGAGE L
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Chapter 13, Problem 5P
To determine
Plot the efficiency curve.
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The setup shown in the figure is being used to measure the energy loss across a valve.
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A pump pumps water from one tank (open to atmosphere) to another tank (open to atmosphere) at a height of 25 m. A pipe with a diameter of 50 mm and a length of 100 m (e=1.5 mm) is used in the system. Since the variation of the pump's head with the flow rate is given as H= 50-20000Q^2, calculate the water flow through the pipe by ignoring the local losses (ρ=1000 kg/m^3, μ= 0.001 N.s/m)
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Chapter 13 Solutions
ENGINEERING FUNDAMENTALS
Ch. 13.2 - Prob. 1BYGCh. 13.2 - Prob. 2BYGCh. 13.2 - Prob. 3BYGCh. 13.2 - Prob. 4BYGCh. 13.2 - Prob. 5BYGCh. 13.2 - Prob. BYGVCh. 13.4 - Prob. 1BYGCh. 13.4 - Prob. 2BYGCh. 13.4 - Prob. 3BYGCh. 13.4 - Prob. 4BYG
Ch. 13.4 - Prob. BYGVCh. 13.5 - Prob. 1BYGCh. 13.5 - Prob. 2BYGCh. 13.5 - Prob. 3BYGCh. 13.5 - Prob. 4BYGCh. 13.5 - Prob. 5BYGCh. 13.5 - Prob. BYGVCh. 13 - Prob. 1PCh. 13 - Prob. 2PCh. 13 - An elevator has a rated capacity of 2200 lb. It...Ch. 13 - Prob. 4PCh. 13 - Prob. 5PCh. 13 - Prob. 6PCh. 13 - Prob. 7PCh. 13 - Prob. 8PCh. 13 - Prob. 9PCh. 13 - Prob. 10PCh. 13 - Prob. 12PCh. 13 - Prob. 14PCh. 13 - Prob. 15PCh. 13 - Prob. 16PCh. 13 - Prob. 17PCh. 13 - Prob. 18PCh. 13 - Prob. 19PCh. 13 - Prob. 20PCh. 13 - Prob. 22PCh. 13 - Prob. 23PCh. 13 - Prob. 24PCh. 13 - Prob. 25PCh. 13 - Prob. 26PCh. 13 - Prob. 28PCh. 13 - Prob. 29PCh. 13 - Prob. 30PCh. 13 - Prob. 31PCh. 13 - Prob. 32PCh. 13 - Prob. 33PCh. 13 - Prob. 34PCh. 13 - Prob. 35PCh. 13 - Prob. 37PCh. 13 - Prob. 38P
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- 4. The horizontal pump in the Figure discharges 13°C water at 26 m/h. Neglecting losses, what power in kW is delivered to the water by the pump? y = 9790 N/m 100 kPa 300 kPa Pump D=12 cm Dz=4 cmarrow_forwardThe following data were recorded when a centrifugal pump worked at its maximum efficiency: Q = 40 /ps ; Manometric head developed = 25 m; Input shaft horse power = 11.9 W. What is the non- dimensional specific speed of the pump it it was running at 1500 rpm? (May adopt the following (all in S.I. units): g¹/4 = 1.77, g/2² = 3-132, g/=5.544, √√21.414,5 = 2.236 and 10 = 3.162)arrow_forwardA tube of diameter 25 mm is used (as shown in the below figure) as a siphon to discharge water from a large open vessel into a drain at atmospheric pressure, (Given: Atmospheric pressure = 101.325 kPa) ignoring friction losses (3) (1) Determine (a)Velocity of flow through syphon (b)Discharge through the syphon (c)The minimum pressure inside the syphon (2) 160 mm 80 mm, 100 mmarrow_forward
- An open cylindrical vessel 1.2 m in diameter and 2.1 m high is 2/3 full of water. Compute the amount of water that will be spilled out of the vessel if the vessel is rotated about its vertical axis at a constant angular speed of 90 rpm. Select one: O a. 16 liters O b. 13 liters O c. 9.6 liters O d. 10 litersarrow_forwardProblem 6: Energy Equation Demonstration Recently we saw a laboratory apparatus demonstrate several aspects of the energy equation. As you will recall, the cross-sectional area of the pipe varied from a maximum of 4.909×104 m² at point A to 7.854x105 m² at point E (factor of 6.25 difference): 76.08 BCDE SLOB 74 35 5.0 Part A What is the smallest velocity at Point E (VE) that will cause cavitation? T = 20°C, and you may assume the pressure at Point A (PA) is one Denver atmosphere, so PA = Patm = 85 kPa. Neglect the piezometer connections - assume they do not exist. [m/s] Part B In reality, of course, we do have piezometer connections at points A-F. What happens in the real apparatus when the discharge equals the result from Part A? (≤25 words)arrow_forwardA tank with a capacity of 4000 L is full of a mixture of water and chlorine with a concentration of 0.005 g of chlorine per liter. In order to reduce the concentration of chlorine, freshwater is pumped into the tank at a rate of 40 L/s. The mixture is kept stirred and is pumped out at a rate of 100 L/s. Find the amount of chlorine in the tank as a function of time. (Let y be the amount of chlorine in grams and t be the time in seconds.)arrow_forward
- The discharge through a 75mm diameter orifice at the bottom of a large tank was measured to be 1734 liters for every minute. If the head over the orifice remains constant at 5.5m, determine the coefficient of discharge. (A 0.91 В 0.63 0.84 No Answer among the choices (E) 0.72arrow_forward9. A pump, which has characteristics such in Table 1 is used to deliver water from 2 reservoirs having a static head of 4.5 m through a pipeline. The pipe is 600 m length with 125 mm in diameter, having a friction factor of 0.016. There are 4 bends and 2 gate valves installed. Head (m) Efficiency (%) Determine: i. ii. 16.0 15.0 0 44 4.5 m 12.7 9.5 60 63 flow rate, head, and efficiency at operating point Power input and output required by the pump 5.6 53 1.0 10arrow_forwardCalculate the theoretical discharge through a vertical orifice 0.3 m square in the side of a tank if the free surface of the liquid in the tank is 150 mm above the top edge of the orifice. Compare this value with that obtained by multiplying the orifice area by the theoretical velocity at its center. Draw the figure properly.arrow_forward
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