Hexafluoride thermal properties

The values in these tables were generated from the NIST REFPROP software (Lemmon, E. W., McLinden, M. O., and Huber, M. L., NIST Standard Reference Database 23 Reference Fluid Thermodynamic and Transport Properties—REFPROP, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, Md., 2002, Version 7.1). The primary source for the thermodynamic properties is de Reuck, K. M., Craven, R. J. B., and Cole, W. A., Report on the Development of an Equation of State for Sulphur Hexafluoride, lUPAC Thermodynamic Tables Project Centre, London, 1991. Validated equations for the viscosity and thermal conductivity are not currently available for this fluid. 

The construction of new equipment with higher capacity and improved performance has been made possible by the excellent electrical, thermal and chemical properties of SFg. Changing from conventional dielectrics to sulfur hexafluoride, which is a nonflammable chemically inactive and nontoxic gas with high density, results in considerable space and weight savings. Improvements in the operational safety of converted equipment can also be achieved [41, 42]. 

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