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Pressure-Volume-Temperature Relationships of Gases Virial Coefficients.

AD719749

Publication Date	1971
Personal Author	Sengers, J. M. H. L.; Klein, M.; Gallagher, J. S.
Page Count	56
Abstract	Tables of second virial coefficients as functions of temperature are presented for 14 gases. These gases are mainly noble gases and constituents of air. In most cases, these are based on a reexamination of the original P-V-T data. Where necessary and possible, these data have been refitted and improved experimental virials determined. In the case of eight of these gases, it has been possible to fit the experimental second virials to those predicted by the (m,6) potential function and potential parameters determined. In almost all cases, an optimum fit was obtained for m = 18. The optimum potential function was used for extrapolating the tables somewhat beyond the experimental range, and for obtaining temperature derivatives of B. In the case of the other six substances virial coefficients predicted by the (m,6) functions were used as a smoothing aid. Experimental third virial coefficients are presented at the experimental temperatures. A table of Boyle and Joule-Thomson inversion temperatures is also presented. (Author)
Keywords	Gases Thermodynamics Helium group gases Air Oxygen Nitrogen Water Heavy water Methane Carbon dioxide Tables Virial coefficients
Source Agency	Invalid Source Agency Code
NTIS Subject Category	99F - Physical & Theoretical Chemistry
Corporate Authors	National Bureau of Standards Washington D C Heat Div
Document Type	Technical Report
Title Note	Final rept. Jul 69-Oct 70.
NTIS Issue Number	197108

Pressure-Volume-Temperature Relationships of Gases Virial Coefficients.

Pressure-Volume-Temperature Relationships of Gases Virial Coefficients.
AD719749

Publication Date	1971
Personal Author	Sengers, J. M. H. L.; Klein, M.; Gallagher, J. S.
Page Count	56
Abstract	Tables of second virial coefficients as functions of temperature are presented for 14 gases. These gases are mainly noble gases and constituents of air. In most cases, these are based on a reexamination of the original P-V-T data. Where necessary and possible, these data have been refitted and improved experimental virials determined. In the case of eight of these gases, it has been possible to fit the experimental second virials to those predicted by the (m,6) potential function and potential parameters determined. In almost all cases, an optimum fit was obtained for m = 18. The optimum potential function was used for extrapolating the tables somewhat beyond the experimental range, and for obtaining temperature derivatives of B. In the case of the other six substances virial coefficients predicted by the (m,6) functions were used as a smoothing aid. Experimental third virial coefficients are presented at the experimental temperatures. A table of Boyle and Joule-Thomson inversion temperatures is also presented. (Author)
Keywords	Gases Thermodynamics Helium group gases Air Oxygen Nitrogen Water Heavy water Methane Carbon dioxide Tables Virial coefficients
Source Agency	Invalid Source Agency Code
NTIS Subject Category	99F - Physical & Theoretical Chemistry
Corporate Authors	National Bureau of Standards Washington D C Heat Div
Document Type	Technical Report
Title Note	Final rept. Jul 69-Oct 70.
NTIS Issue Number	197108