# A System And Method To Determine Thermophysical Properties Of A Multi-Component Gas At Arbitrary Temperature And Pressure

## Abstract

A method to determine thermodynamic properties of a natural gas hydrocarbon, when the speed of sound in the gas is known at an arbitrary temperature and pressure. Thus, the known parameters are the sound speed, temperature, pressure, and concentrations of any dilute components of the gas. The method uses a set of reference gases and their calculated density and speed of sound values to estimate the density of the subject gas. Additional calculations can be made to estimate the molecular weight of the subject gas, which can then be used as the basis for mass flow calculations, to determine the speed of sound at standard pressure and temperature, and to determine various thermophysical characteristics of the gas.

- Inventors:

- (San Antonio, TX)
- (Gilbert, AZ)

- Publication Date:

- Research Org.:
- Southwest Research Institute (San Antonio, TX)

- OSTI Identifier:
- 879573

- Patent Number(s):
- US 6704660

- Application Number:
- 09/237492

- Assignee:
- Southwest Research Institute (San Antonio, TX) NETL

- DOE Contract Number:
- FC21-96MC33033

- Resource Type:
- Patent

- Country of Publication:
- United States

- Language:
- English

### Citation Formats

```
Morrow, Thomas E., and Behring, II, Kendricks A.
```*A System And Method To Determine Thermophysical Properties Of A Multi-Component Gas At Arbitrary Temperature And Pressure*. United States: N. p., 2004.
Web.

```
Morrow, Thomas E., & Behring, II, Kendricks A.
```*A System And Method To Determine Thermophysical Properties Of A Multi-Component Gas At Arbitrary Temperature And Pressure*. United States.

```
Morrow, Thomas E., and Behring, II, Kendricks A. Tue .
"A System And Method To Determine Thermophysical Properties Of A Multi-Component Gas At Arbitrary Temperature And Pressure". United States. https://www.osti.gov/servlets/purl/879573.
```

```
@article{osti_879573,
```

title = {A System And Method To Determine Thermophysical Properties Of A Multi-Component Gas At Arbitrary Temperature And Pressure},

author = {Morrow, Thomas E. and Behring, II, Kendricks A.},

abstractNote = {A method to determine thermodynamic properties of a natural gas hydrocarbon, when the speed of sound in the gas is known at an arbitrary temperature and pressure. Thus, the known parameters are the sound speed, temperature, pressure, and concentrations of any dilute components of the gas. The method uses a set of reference gases and their calculated density and speed of sound values to estimate the density of the subject gas. Additional calculations can be made to estimate the molecular weight of the subject gas, which can then be used as the basis for mass flow calculations, to determine the speed of sound at standard pressure and temperature, and to determine various thermophysical characteristics of the gas.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {2004},

month = {3}

}

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