The Evaluation of the Equations of State Used for the Joule-Thomson Effect Analysis in the Dry Gas Seal

Cheng Xiang Deng; Peng Yun Song

doi:10.4028/www.scientific.net/AMM.752-753.391

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 752-753The Evaluation of the Equations of State Used for...

The Evaluation of the Equations of State Used for the Joule-Thomson Effect Analysis in the Dry Gas Seal

Abstract:

The Joule-Thomson (JT) effect will occur when the gas flows through the components of filters, valves, orifices and end faces in the system of the dry gas seal, which may cause the temperature of the seal gas to decrease, and even the emergence of liquid condensation. Generally, the Joule-Thomson effect is reflected by the Joule-Thomson coefficient. As to the hydrogen, nitrogen, carbon dioxide and air, which are often met in the dry gas seal, the corresponding Joule-Thomson (JT) coefficients were calculated by four classical equations of state (EOS) of VDW, RK, SRK and PR, which are compared with the experimental data in the literature. The results show that the JT coefficients calculated by RK equation are most close to the experimental data in the literature, whose relative error is lowest and less than 4%. When the JT effect of real gas in the dry gas seal is analyzed, the RK equation of state is recommend.

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Periodical:

Applied Mechanics and Materials (Volumes 752-753)

Pages:

391-395

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.752-753.391

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Online since:

April 2015

Authors:

Cheng Xiang Deng, Peng Yun Song*

Keywords:

Dry Gas Seal, Equation of State, Joule-Thomson Coefficient

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* - Corresponding Author

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