A fire-man's pump steadily draws water from a river through a pipe with an inlet of diameter 12cm. A fireman positioned 3m above the pump inlet, holds a nozzle with an exit diameter of 3.5cm that is connected to the pump outlet by a flexible hose. The heat transfer to the surroundings from the pump is 10% of its output when it delivers a flow rate of 0.015m³/s. (a) 4. Draw a sketch of the pipe & pump and include an appropriate system boundary for a control volume analysis of the power requirements of the pump. Assuming steady state flow, calculate the power requirement for the pump to deliver 0.015m³/s in these conditions. Note that the density of water is 998kg/m³ and the gravitational acceleration is 10m/s². (b) [Answer: 2.5kW]

A fire-man's pump steadily draws water from a river through a pipe with an inlet of diameter 12cm. A fireman positioned 3m above the pump inlet, holds a nozzle with an exit diameter of 3.5cm that is connected to the pump outlet by a flexible hose. The heat transfer to the surroundings from the pump is 10% of its output when it delivers a flow rate of 0.015m³/s. (a) 4. Draw a sketch of the pipe & pump and include an appropriate system boundary for a control volume analysis of the power requirements of the pump. Assuming steady state flow, calculate the power requirement for the pump to deliver 0.015m³/s in these conditions. Note that the density of water is 998kg/m³ and the gravitational acceleration is 10m/s². (b) [Answer: 2.5kW]

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

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Question

Use the steady flow energy equation to find the Change i entllaipy 10i tme all
through the diffuser.
(c)
[Answers: 121kg/s, 15.3kJ/kg]
A fire-man's pump steadily draws water from a river through a pipe with an inlet of
diameter 12cm. A fireman positioned 3m above the pump inlet, holds a nozzle with an
exit diameter of 3.5cm that is connected to the pump outlet by a flexible hose. The heat
transfer to the surroundings from the pump is 10% of its output when it delivers a flow
rate of 0.015m³/s.
(a)
4.
Draw a sketch of the pipe & pump and include an appropriate system boundary
for a control volume analysis of the power requirements of the pump.
Assuming steady state flow, calculate the power requirement for the pump to
deliver 0.015m³/s in these conditions. Note that the density of water is
998kg/m³ and the gravitational acceleration is 10m/s2.
(b)
[Answer: 2.5kW]
EAP/Revised 14th December 2020.

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