Speed of Sound AGA10:2003

This report outlines a method for the calculation of the speed of sound in natural gas and the individual components that make up natural gas. It calculates the entropy, enthalpy and C* coefficient for the sonic nozzles. This information is based on research that was developed and managed by the Gas Technology Institute (formerly the Gas Research Institute).

Inputs

Base Temperature   oC (-8 to 62)
Base Pressure   bar a (0 to 120)
Line Temperature   oC (-8 to 62)
Line Pressure   bar a (0 to 120)

INPUT

Gas Component

Formula

 

Gas Composition (% Mole)

Methane

C1

CH4

Nitrogen

N2

N2

Carbon Dioxide

CO2

CO2

Ethane

C2

C2H6

Propane

C3

C3H8

Water

H2O

H2O

Hydrogen Sulphide

H2S

H2S

Hydrogen

H

H

Carbon Monoxide

CO

CO

Oxygen

O2

O2

iso-Butane

iC4

C4H10

n-Butane

nC4

C4H10

iso-Pentane

iC5

C5H12

n-Pentane

nC5

C5H12

n-Hexane

nC6

C6H14

n-Heptane

nC7

C7H16

n-Octane

nC8

C8H18

n-Nonane

nC9

C9H20

n-Decane

nC10

C10H22

Helium

He

He

Argon

Ar

Ar

Note: For demonstration, fixed value entries are shown shaded grey