THERMODYNAMICS: ENG APPROACH LOOSELEAF
9th Edition
ISBN: 9781266084584
Author: CENGEL
Publisher: MCG
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Chapter 2.8, Problem 45P
A water pump increases the water pressure from 15 psia to 70 psia. Determine the power input required, in hp, to pump 0.8 ft3/s of water. Does the water temperature at the inlet have any significant effect on the required flow power?
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Students have asked these similar questions
A centrifugal pump compresses 3000 liters/min of water from 98 kPa to 300 kPa.
The inlet and outlet temperatures are 25°C. The inlet and discharge piping are on
the same level, but the diameter of the inlet piping is 15 cm, whereas that of the
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Solve the problem.
A reciprocating compressor draws in 500 cubic feet per minute of air whose density is 0.079 lb/cu ft and discharges it with a density of 0.304 lb/cu ft. At the suction, pressure is 15 psia, at discharge pressure is 80 psia. The increase in the specific internal energy is 33.8 Btu/lb and the heat transferred from the air by cooling is 13 Btu/lb. Determine the work on the air in Btu/min and in hp. Neglect change in kinetic energy.
A reciprocating compressor draws in 500 cubic feet per minute of air whose density is 0.079
Ibm/cu ft and discharges it with a density of 0.304 lb /cu ft. At the suction, pi = 15 psia; at
discharge, p = 80 psia. The increase in the specific internal energy is 33.8 Btu/lbm. Determine
the work on the air in Btu/min and in hp. Neglect change in kinetic energy.
Ans. 56.25 hp
Chapter 2 Solutions
THERMODYNAMICS: ENG APPROACH LOOSELEAF
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