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The main waterline into a tall building has a pressure of

Fundamentals of Thermodynamcs | 8th Edition | ISBN: 9781118131992 | Authors: Claus Borgnakke, Richard E. Sonntag ISBN: 9781118131992 58

Solution for problem 99HP Chapter 1

Fundamentals of Thermodynamcs | 8th Edition

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Fundamentals of Thermodynamcs | 8th Edition | ISBN: 9781118131992 | Authors: Claus Borgnakke, Richard E. Sonntag

Fundamentals of Thermodynamcs | 8th Edition

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Problem 99HP

Problem 99HP

The main waterline into a tall building has a pressure of 600 kPa at 5-m elevation belowground level. The building is shown in Fig. P1.99. How much extra pressure does a pump need to add to ensure a waterline pressure of 200 kPa at the top floor 150 m aboveground?

FIGURE P1.99

Step-by-Step Solution:

Solution 99HP

Step 1 of 3:

The main waterline is connected to a tall building having height h from the water below the ground at a pressure Pg. We are going to find the extra pressure to be added to ensure the pressure Pt at the top.

The pressure of water below ground Pg = 600 kPa

The height of the building h = 150 m

The depth of water below ground d = 5 m

The acceleration due to gravity g = 9.81 m/s2

The pressure at the top Pt = 200 kPa = 200 x 103 Pa

The density of water ⍴ = 1000 kg/m3

Step 2 of 3

Chapter 1, Problem 99HP is Solved
Step 3 of 3

Textbook: Fundamentals of Thermodynamcs
Edition: 8
Author: Claus Borgnakke, Richard E. Sonntag
ISBN: 9781118131992

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The main waterline into a tall building has a pressure of