NIST Thermodynamic Properties for 105 Pure Fluids and Mixtures

NIST Standard Reference Data 23 provides thermodynamic and transport properties for 105 pure fluids and mixtures of up to 20 components, including HFCs, CFCs, and natural refrigerants. The database includes FORTRAN subroutines, fluid data files, and a sample Excel spreadsheet for accessing calculations. This version has been superseded by REFPROP Version 10.

Use Cases

• Calculate boiling points and azeotropes for binary mixtures of alternative refrigerants.
• Model air conditioning system performance using properties like air density and viscosity.
• Analyze calorific values and adiabatic processes for biofuels and biodiesels.
• Implement FORTRAN subroutines to compute thermodynamic properties like acentric factors for pure fluids.

Strengths

• Covers 105 pure fluids, including environmentally acceptable HFCs and natural refrigerants like ammonia.
• Supports mixtures of up to 20 components, enabling complex thermodynamic modeling.
• Provides source code (FORTRAN subroutines) and data files for integration into custom applications.
• Includes a sample Excel spreadsheet demonstrating linkage to the REFPROP DLL for property calculations.

Limitations

• This version (9.1) has been officially superseded by REFPROP Version 10, which may contain updated data and features.
• The system requirements specify older Windows operating systems (e.g., Windows 98, XP, Vista, 7), which may limit compatibility with modern systems.
• The dataset's primary format is HTML documentation with associated binaries, lacking a directly queryable tabular structure for some users.

Provenance

Source

National Institute of Standards and Technology (NIST)

Collection Method

Compiled as NIST Standard Reference Data, including revised data and source code.

Freshness

Last updated on 2022-07-29, but the version is superseded.