Beattie-Bridgeman Equation of State: The Beattie-Bridgeman equation of state was proposed in It has five experimentally determined constants. A some what more complex equation is the Beattie-Bridgeman equation. P = R T d + (B R T – A – R c / T2) d2 + (- B b R T + A a – R B c / T2) d3 + R B b c d4 / T2. Orig. Receipt Date: DEC Country of Publication: United States. Language: English. Subject: PHYSICS; BEATTIE-BRIDGEMAN EQUATION; ENTROPY;.

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For reproduction of material from PPS: The animation on the left shows the error involved in assuming steam to be an ideal gas.

For most applications, such a detailed analysis is unnecessary, and the ideal gas approximation can be used with reasonable accuracy. If you are the author of this article you do not need to formally request permission to reproduce figures, diagrams etc. Bridge,an is the XXth reference in the list of references. To understand the behaviour of real gases, the following must be taken into account:. It is expressed as. The Clausius equation named after Rudolf Clausius is a very simple three-parameter equation used to model gases.

It is almost always more accurate than the van der Waals equationand often more accurate than some equations with more than two parameters.


From the generalized compressibility chart, the following observations can be made. Where p is the pressure, T is the temperature, R the ideal gas constant, and V m the molar volume. If you are the author of this article you still need to obtain permission to reproduce the whole article in a bridgemaj party publication with the beatgie of reproduction of the whole article in a thesis or dissertation.

Van der Waals Equation of State: Search articles by author J. Jump to main content. By using this site, you agree to the Terms of Use and Privacy Policy. The Virial equation derives from a perturbative treatment of statistical mechanics.

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For reproduction of material from all other RSC journals and books: Dieterici [2] fell out of usage in recent years. This equation is known to be reasonably accurate for densities up to about 0.

Reproduced material should be attributed as follows: The properties with a bar on top are molar basis. For ideal gas, Z is equal to 1. The compressibility factor Z is a dimensionless ratio of the product of pressure and specific volume to the product of gas constant and temperature. The following equation is the ideal-gas equation of state. Beattie-Bridgeman Equation of State: If the material has been adapted instead of reproduced from the original RSC publication “Reproduced from” can be substituted with “Adapted from”.


Any equation that relates the pressure, temperature, and specific volume of a substance is called the equation of state. The compressibility factor Z is a measure of deviation from the ideal-gas behavior. Benedict, Webb, and Rubin raised the number of experimentally determined constants in the Beattie-Bridgeman Equation of State to eight in vridgeman For reproduction of material from PCCP: Previous Article Next Article.

Beattiie [1] is very rarely used. Views Read Edit View history.

Equations of State

The constants of the Beattie-Bridgeman equation. However, it is only accurate over a limited range. If you are not the author of this article and you wish to reproduce material from it in beattei third party non-RSC publication you must formally request permission using Copyright Clearance Center.

Authors contributing to RSC publications journal articles, books or book chapters do not need to formally request permission to reproduce material contained in this article provided that the correct acknowledgement is given with the reproduced material. Information about reproducing material from RSC articles with different licences is available on our Beatie Requests page.

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