Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)
5th Edition
ISBN: 9781305084766
Author: Saeed Moaveni
Publisher: Cengage Learning
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Chapter 13, Problem 5P
To determine
Plot the efficiency curve.
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A centrifugal pump is driven by a motor. The performance of the pump reveals the following information:Power input to the pump by the motor (kW):0.5, 0.7, 0.9, 1.0, 1.2Power input to the fluid by the pump (kW):0.3, 0.55, 0.7, 0.9, 1.0Plot the efficiency curve. The efficiency of a pump is a function of the flow rate. Assume that the flow-rate readings corresponding to power data points are equally spaced.
In the figure shown below, it is desired to pump 5259705 lit/day of water from a stream to a pool. El. A = 49m while El. B = 98 m. If the combined pump and motor efficiency is 90%, calculate the monthly power cost in pesos if electricity rate is P10 per kW-hr. Assume that the pump operates for 24 hours and take 1 month = 31 days;
Round your answer to 4 decimal places.
Pipe
Length (m)
Diameter (mm)
Hazen Coefficient
1
1997 m
375 mm
120
2
1514 m
240 mm
122
3
902 m
205 mm
149
a centrifugal pump discharges 300 gpm against a head of 55 ft when the speed is 1500 rpm. The diameter of the impeller is 15.5 in. and the brake horsepower is 6.0.
a. determine the efficiency of the pump.
b. what should be the speed of the geometrically similar pump of 15 in. in diameter running at a capacity of 400 gpm?
Chapter 13 Solutions
Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)
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. 26P
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