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# A fireboat is to fight fires at coastal areas by drawing ISBN: 9780071284219 39

## Solution for problem 91P Chapter 5

Fluid Mechanics | 2nd Edition

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Problem 91P

A fireboat is to fight fires at coastal areas by drawing seawater with a density of 1030 kg/m3 through a 20-cm-diameter pipe at a rate of 0.1 m3/s and discharging it through a hose nozzle with an exit diameter of 5 cm. The total irreversible head loss of the system is 3 m, and the position of the nozzle is 3 m above sea level. For a pump efficiency of 70 percent, determine the required shaft power input to the pump and the water discharge velocity. Step-by-Step Solution:

Introduction

The water is discharged through the nozzle exit having diameter 5 cm and the total irreversible head loss of the system is 3 m and the nozzle is 3 m above the sea level .

Step 1 </p>

The water discharge through the nozzle end the velocity is given by The area       Step 2</p>

Let P1 and  P2 are the pressure at the free surface of the sea and the nozzle exit they were both same so P1 =  P2 =Patm

The energy equation for the control volume between the surface of the sea and the nozzle outlet is P1 =  P2 =Patm  And     Step 3 of 4

Step 4 of 4

##### ISBN: 9780071284219

This full solution covers the following key subjects: diameter, Pump, nozzle, irreversible, areas. This expansive textbook survival guide covers 15 chapters, and 1547 solutions. This textbook survival guide was created for the textbook: Fluid Mechanics, edition: 2. The full step-by-step solution to problem: 91P from chapter: 5 was answered by , our top Engineering and Tech solution expert on 07/03/17, 04:51AM. The answer to “A fireboat is to fight fires at coastal areas by drawing seawater with a density of 1030 kg/m3 through a 20-cm-diameter pipe at a rate of 0.1 m3/s and discharging it through a hose nozzle with an exit diameter of 5 cm. The total irreversible head loss of the system is 3 m, and the position of the nozzle is 3 m above sea level. For a pump efficiency of 70 percent, determine the required shaft power input to the pump and the water discharge velocity.” is broken down into a number of easy to follow steps, and 86 words. Fluid Mechanics was written by and is associated to the ISBN: 9780071284219. Since the solution to 91P from 5 chapter was answered, more than 1202 students have viewed the full step-by-step answer.

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