# Presentation: 223385

## REFPROP V6.0NIST Thermodynamic and Transport Properties of Refrigerants and Refrigerant Mixtures Database

- Includes 33 pure fluids and mixtures with up to 5 components
- including R23, R32, R125, R134a, R143a, R245fa, R22, R123, R124, R141b, R142b, R11, R12, R13, R113, R114, R115, CO2, ammonia, propane, isobutane, R407C, R410A
- Uses the most accurate pure fluid equations of state currently available; also has new mixture model with experimentally based values of mixture parameters for 75 mixtures.
- Provides both equilibrium and transport properties including P, V, T, density, Cp, Cv, enthalpy, entropy, speed of sound, thermal conductivity, viscosity and surface tension.
- Uses a new, graphical user interface with on-line help, plots of properties, and a wide variety of tables.
- FORTRAN Source code for property routines is provided.

- NIST Standard Reference Data 23
- 301-975-2208  http://www.nist.gov/srd

## NIST Chemistry Webbookhttp://webbook.nist.gov

- Web site for thermochemical data on-line.
- Thermochemical data for over 5000 organic and small inorganic compounds:
- Enthalpy of formation , Enthalpy of combustion, Heat capacity, Entropy, Phase transition enthalpies and temperatures, Vapor pressure
- Heat of reaction data for over 3000 reactions.
- IR spectra for over 5000 compounds.
- Mass spectra for over 8000 compounds.
- Ion energetics data for over 14000 compounds:
- Ionization energy,  Appearance energy,  Electron affinity, Proton affinity, Gas basicity
- Thermophysical property data for 13 fluids:
- Density, Specific volume, Cp, Cv, Enthalpy, Internal energy, Entropy, Sound speed

- NIST Standard Reference Data 69
- 301-975-2208  http://www.nist.gov/srd

## NIST/ASME Steam Properties Database V2.1 

- Based on the new International Association for the Properties of Water and Steam (IAPWS) formulation.
- Many thermophysical properties are available including:
- T, P, V, Density, quality, enthalpy, internal energy, entropy, Cv, Cp, Helmholtz energy, Gibbs energy, fugacity, isothermal compressibility, volume expansivity, speed of sound, Joule-Thomson coefficient, thermal conductivity, viscosity, dielectric constant, and surface tension.
- Uses a new, graphical user interface with on-line help; plots of properties, and a wide variety of tables.
- FORTRAN source code is provided for property subroutines.

- NIST Standard Reference Data 10
- 301-975-2208  http://www.nist.gov/srd

## NIST Mixture Property DatabaseNIST14, V9.08

- Provides thermodynamic and transport properties of pure fluids and their mixtures with an emphasis on validated density calculations, especially for CO2-rich hydrocarbon mixtures. Each pure fluid is computed using high accuracy equations of state. Mixtures use an extended corresponding states model with exact shape factors. 17 pure fluids are available including:
- methane, ethane, propane, iso and normal butane, iso and normal pentane, n-hexane, n-heptane, nitrogen, oxygen, argon, carbon monoxide, carbon dioxide, hydrogen sulfide.
- Many properties are available:
- Phase equilibrium calculations: bubble point pressure and temperature, dew point pressure and temperature.
- saturation properties, P, V, T, density, enthalpy, Cp,  entropy, viscosity and thermal conductivity.
- Isothermal flash calculations; tables of density, enthalpy, entropy and heat capacity as functions of T or P.

- NIST Standard Reference Data 14
- 301-975-2208  http://www.nist.gov/srd

## NIST Thermophysical Properties of Hydrocarbon Mixtures Database(SUPERTRAPP) NIST4 v2.0

- Program  provides thermophysical properties of pure fluids and hydrocarbon mixtures with an emphasis on prediction, for a large number of fluids.
- 192 pure fluids available: alkanes from methane to C26, alkenes, cycloalkanes, aromatics, napthenic compounds.
- Users may input their own new fluids, by inputting molecular weight, critical properties and normal boiling point.
- Many properties are available:
- Phase equilibrium calculations: bubble point pressure and temperature, dew point pressure and temperature.
- Saturation properties, P,V, T, density, enthalpy, Cp,  entropy, viscosity and thermal conductivity.
- Isothermal flash calculations; tables of density, enthalpy, entropy and heat capacity as functions of T or P.
- Adiabatic flash calculations, isentropic flash calculations.
- FORTRAN source code is available for property subroutines.

- NIST Standard Reference Data 4
- 301-975-2208  http://www.nist.gov/srd

## NIST Thermophysical Properties of Pure Fluids DatabaseNIST12 V3.0

- Provides equilibrium thermodynamic properties and transport properties using wide ranging NIST Standard Reference correlations including:
- P,V,T, density, Cp,  Cv, speed of sound, enthalpy, entropy, thermal conductivity, viscosity, Gruneisen parameter, Joule-Thomson coefficient,  Prandtl number,  dielectric constant, thermal diffusivity, compressibility factor.
- 17 pure fluids available:
- argon, iso-butane, n-butane, carbon dioxide, carbon monoxide, deuterium, ethane, ethylene, helium (including superfluid states), normal hydrogen, para hydrogen, methane, nitrogen, nitrogen trifluoride, oxygen, propane, and xenon.
- FORTRAN source code is provided for property routines.

- NIST Standard Reference Data 12
- 301-975-2208  http://www.nist.gov/srd

## NIST Database 72Thermophysical Properties of Air and Air Component Mixtures:AIRPROPS

- Provides thermophysical properties of standard air and mixtures of nitrogen-argon-oxygen.
- Properties include: P, V, T, density, enthalpy, entropy,  internal energy, Gibbs energy, Helmholtz energy, Cp, Cv, speed of sound, thermal conductivity, viscosity,  compressibility factor, virial coefficients,  fugacity coefficient, surface tension,  Joule-Thomson coefficient,  adiabatic compressibility,  adiabatic bulk modulus, isothermal compressibility, isothermal bulk modulus,  volume expansivity
- Equation of state is valid from the triple point to 870K and up to 70MPa
- Dew and bubble point pressures, and the pressure along the freezing line may be calculated.
- FORTRAN source code is available for property subroutines.

- NIST Standard Reference Data 72
- 301-975-2208  http://www.nist.gov/srd