A 6-cm-diameter horizontal water pipe expands gradually to a 9-cm-diameter pipe. The walls of the expansion section are angled 30° from the horizontal. The average velocity and pressure of water before the expansion section are 7 m/s and 150 Ka, respectively. Determine the head loss (m) in the expansion section. 6 cm 9 cm Water 7 m/s 150 kPa Gradual Expansion and Contraction (based on the velocity in the smaller-diameter pipe) Expansion: K = 0.02 for 0 = 20° K = 0.04 for 0 = 45° K = 0.07 for 0 = 60° Contraction (for 0 = 20°): K = 0.30 for d/D = 0.2 K = 0.25 for dlD = 0.4 K, = 0.15 for diD = 0.6 K = 0.10 for dlD = 0.8 %3D -v d d %3D

A 6-cm-diameter horizontal water pipe expands gradually to a 9-cm-diameter pipe. The walls of the expansion section are angled 30° from the horizontal. The average velocity and pressure of water before the expansion section are 7 m/s and 150 Ka, respectively. Determine the head loss (m) in the expansion section. 6 cm 9 cm Water 7 m/s 150 kPa Gradual Expansion and Contraction (based on the velocity in the smaller-diameter pipe) Expansion: K = 0.02 for 0 = 20° K = 0.04 for 0 = 45° K = 0.07 for 0 = 60° Contraction (for 0 = 20°): K = 0.30 for d/D = 0.2 K = 0.25 for dlD = 0.4 K, = 0.15 for diD = 0.6 K = 0.10 for dlD = 0.8 %3D -v d d %3D

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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Pressure Vessels

The term pressure vessel refers to a closed container that contains gas or liquid at a different pressure than environment pressure. The pressure vessels have a wide scale of applications in our day-to-day lives and other industrial places. Some common examples of pressure vessels are gas cylinders, autoclaves, compressor vessels, etc.

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A 6-cm-diameter horizontal water pipe expands gradually to a 9-cm-diameter pipe. The walls of the expansion section are angled 30° from the horizontal. The average
velocity and pressure of water before the expansion section are 7 m/s and 150 Ka, respectively. Determine the head loss (m) in the expansion section.
6 cm
9 cm
Water
7 m/s
150 kPa
Gradual Expansion and Contraction (based on the velocity in the smaller-diameter pipe)
Expansion:
K = 0.02 for 0 = 20°
K = 0.04 for 0 = 45°
K = 0.07 for 0 = 60°
Contraction (for 0 = 20°):
K = 0.30 for d/D = 0.2
K = 0.25 for dlD = 0.4
K, = 0.15 for diD = 0.6
K = 0.10 for dlD = 0.8
%3D
-v d
d
%3D

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