- #1

FranzSC

- 2

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- TL;DR Summary
- Is NIST database accurate?

There's a huge volume of data on NIST database:

https://webbook.nist.gov/cgi/fluid....nit=m/s&VisUnit=uPa*s&STUnit=N/m&RefState=DEF

I'm interested in getting extensive sets of experimental data for the compressibility factor of Nitrogen. Could not find them anywhere until now, so it seems strange to me that NIST has a huge database for all ranges of pressures and temperatures. Do any of you know if the data on NIST database are approximations calculated with some formulae? For example, the NIST data do not seem to represent the Standing and Katz's chart accurately. Thanks.

https://webbook.nist.gov/cgi/fluid....nit=m/s&VisUnit=uPa*s&STUnit=N/m&RefState=DEF

I'm interested in getting extensive sets of experimental data for the compressibility factor of Nitrogen. Could not find them anywhere until now, so it seems strange to me that NIST has a huge database for all ranges of pressures and temperatures. Do any of you know if the data on NIST database are approximations calculated with some formulae? For example, the NIST data do not seem to represent the Standing and Katz's chart accurately. Thanks.