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Natural Gas Processing
book

Natural Gas Processing

by Alireza Bahadori
May 2014
Intermediate to advanced
896 pages
27h 46m
English
Gulf Professional Publishing
Content preview from Natural Gas Processing

8.7. Calculating Cv for gases

Because of compressibility, gases and vapors expand as the pressure drops at the vena contracta, decreasing their specific weight. To account for the change in specific weight, an expansion factor, Y, is introduced into the valve sizing formula. The form of the equation used is one of the following, depending on the process variables available.

w=63.3FPCvYxP1γ1

image (8.12)

Q=1360FPCvP1YxGgT1Z

image (8.13)

w=19.3FPCvP1YxMWT1Z

image (8.14)

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Publisher Resources

ISBN: 9780080999715