NIST database and compressibility factor Z

Click For Summary
SUMMARY

The NIST database provides extensive experimental data for the compressibility factor (Z) of various substances, including Nitrogen, across a wide range of pressures and temperatures. Users have expressed concerns regarding the accuracy of the NIST data compared to established charts, such as the Standing and Katz's chart. The discussion highlights the importance of referencing original articles associated with the NIST data to verify its reliability. The NIST database can be accessed at the provided link for detailed information.

PREREQUISITES
  • Understanding of compressibility factors in thermodynamics
  • Familiarity with the NIST database and its functionalities
  • Knowledge of Standing and Katz's chart for gas compressibility
  • Basic skills in data interpretation and analysis
NEXT STEPS
  • Explore the NIST database for compressibility factor data on various gases
  • Review the original reference articles linked to the NIST database
  • Study the methodology behind Standing and Katz's chart for gas compressibility
  • Investigate alternative databases for experimental data on compressibility factors
USEFUL FOR

Researchers, engineers, and scientists working in thermodynamics, particularly those focused on gas behavior and compressibility factor analysis.

FranzSC
Messages
2
Reaction score
1
TL;DR
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.
 
Science news on Phys.org
My bad, I finally found the reference articles for the database. Sorry.
 
Reply
  • Like
Likes   Reactions: Twigg