NIST Standard Reference Database 23

NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP): Version 8.0

See the following frequently asked questions link for additional information:
http://www.boulder.nist.gov/div838/theory/refprop/Frequently_asked_questions.htm

Price:$200.00

Upgrade Price:$100.00

Multiple copy discounts are available. Contact joan.sauerwein@nist.gov for information regarding distribution licensing.

REFPROP 8.0 has replaced the NIST 12 and 14 databases

Version 8.0 expands the capability of the REFPROP database.  New features include:

• Many additional fluids and mixtures
• Updated and improved models for many fluids and mixtures
• Greatly expanded support for natural gas systems, including:
       - addition of the AGA8 mixture model for natural gas fluids
       - addition of the GERG-2004 mixture model for natural gas fluids, which includes binary interaction parameters for the following fluids: argon, butane, carbon monoxide, carbon dioxide, ethane, helium, heptane, hexane, hydrogen, isobutane, isopentane, methane, nitrogen, octane, oxygen,pentane, propane, and water

• New dielectric correlations for many fluids
• Convergence is now faster, and the number of nonconvergences has been substantially reduced
• Addition of enthalpy derivatives with respect to temperature, pressure, and density
• The ability to select a set of fluids, with all others removed from list
  -predefined lists have been set up for typical refrigerants, natural gas fluids, cryogens, and calibration fluids
  -users can modify these lists or make their own
• The fluids screen can be sorted on fluid name, CAS #, chemical formula, synonym, or UN number
• The ability to add or remove a fluid in an existing mixture
• Fluid search menu to find fluids that match a certain criteria, such as critical point properties, the vapor pressure at the boiling point, or the liquid density at the boiling point

  Version 8.0 includes 84 pure fluids, 5 pseudo-pure fluids (such as air) and mixtures with up to 20 components:

• The typical natural gas constituents methane, ethane, propane, butane, isobutane, pentane, isopentane, hexane, isohexane, heptane, octane, nonane, decane, dodecane, carbon dioxide, carbon monoxide, hydrogen, nitrogen, and water
• The hydrocarbons acetone, benzene, butene, cis-butene, cyclohexane, cyclopropane, ethylene, isobutene, neopentane, propyne, trans-butene, and toluene
• The HFCs R23, R32, R41, R125, R134a, R143a, R152a, R227ea, R236ea, R236fa, R245ca, R245fa, and R365mfc
• The HCFCs R21, R22, R123, R124, R141b, and R142b
• The traditional CFCs R11, R12, R13, R113, R114, and R115
• The fluorocarbons R14, R116, R218, C₄F₁₀, C₅F₁₂, and RC318
• The "natural" refrigerants ammonia, carbon dioxide, propane, isobutane, and propylene
• The main air constituents nitrogen, oxygen, and argon
• The noble elements helium, argon, neon, krypton, and xenon
• The cryogens argon, carbon monoxide, deuterium, krypton, neon, nitrogen trifluoride, nitrogen, fluorine, helium, methane, oxygen, normal hydrogen, and parahydrogen
• Water (as a pure fluid, or mixed with ammonia)
• Miscellaneous substances including carbonyl sulfide, dimethyl ether, ethanol, heavy water, hydrogen sulfide, methanol, nitrous oxide, sulfur hexafluoride, sulfur dioxide, and trifluoroiodomethane
• 55 predefined mixtures (such as R407C, R410A, and air); the user may define and store others

The program uses the most accurate equations of state and models currently available:

• High accuracy Helmholtz energy equations of state, including international standard equations for water, R134a, R32, and R143a and equations from the literature for ethane, propane, R125, ammonia, carbon dioxide, and others
• High accuracy MBWR equations of state, including the international standard EOS for R123
• The Bender equation of state for several of the "older" refrigerants, including R14, R114, and RC318
• An extended corresponding states model for fluids with limited data
• An excess Helmholtz energy model for mixture properties
• Experimentally based values of the mixture parameters are available for hundreds of mixtures
• Viscosity and thermal conductivity are based on fluid-specific correlations (where available), a modification of the extended corresponding states model, or the friction theory model

Available properties:

• Temperature, Pressure, Density, Energy, Enthalpy, Entropy, Cv, Cp, Sound Speed, Compressibility Factor, Joule Thompson Coefficient, Quality, 2nd and 3rd Virial Coefficients, Helmholtz Energy, Gibbs Energy, Heat of Vaporization, Fugacity, Fugacity Coefficient, K value, Molar Mass, Thermal Conductivity, Viscosity, Kinematic Viscosity, Thermal Diffusivity, Prandtl Number, Surface Tension, Dielectric Constant, Isothermal Compressibility, Volume Expansivity, Isentropic Coefficient, Adiabatic Compressibility, Specific Heat Input, Exergy, dp/dr, d²p/dr², dp/dT, dr/dT, dr/dp, and many others

Windows^TM-based, graphical user interface features:

• The fluid or mixture, units, reference state, properties to be displayed (among the 75 available), and other options are specified via pull down menus.
• A wide variety of tables - in a scrollable, spreadsheet style format - may be calculated, including saturation properties (with temperature, pressure, density, enthalpy, entropy, composition, or quality as the independent variable) and tables at constant temperature, pressure, density, volume, enthalpy, or entropy (with temperature, pressure, or density varied).
• Input properties may be read from a file.
• Data in any table can be copied to the clipboard for export to other programs (such as spreadsheets).
• Data in any table can be plotted.
• A wide variety of property diagrams may be automatically generated, including pressure-enthalpy and temperature-entropy diagrams and (for binary mixtures) temperature-composition and pressure-composition plots.
• User preferences and entire sessions may be stored for later use.
• A fluid search dialog is available to find fluids that match a certain criteria.
• A complete help system is available.

Source code: The FORTRAN subroutines and associated fluid data files are provided for those wishing to access REFPROP calculations from their own applications.

Excel spreadsheets:  Two sample spreadsheets are included that demonstrate how the REFPROP DLL can be linked to Excel.  Most properties that are available in the graphical interface can also be calculated in the spreadsheets.

System Requirements: PC running Windows^TM 98, 2000, XP or similar operating system; 10.0 MB available hard disk space.  The Vista operating system is not yet supported but initial testing has been positive.

You may browse the Users' Guide to see how this database works.

Click here to view the PDF version of Users' Guide.

Price: $200.00

Upgrade Price: $100.00

Multiple copy discounts are available..

For more information please contact:

Standard Reference Data Program
National Institute of Standards and Technology
100 Bureau Dr., Stop 2300
Gaithersburg, MD 20899-2310
(301) 975-2008 (VOICE)
(301) 926-0416 (FAX)
Contact Us (E-MAIL)

Contact Joan Sauerwein for information regarding distribution licensing.

(301) 975-2208 (VOICE)
(301) 926-0416 (FAX)
Joan.Sauerwein@nist.gov (E-MAIL)

The scientific contacts for the database:

Thermodynamic properties, graphical interface, and Excel spreadsheets:

Eric W. Lemmon
Physical and Chemical Properties Division
National Institute of Standards and Technology
Boulder, CO 80305-3328
(303) 497-7939
EricL@boulder.nist.gov

Transport properties:

Marcia L. Huber
Physical and Chemical Properties Division
National Institute of Standards and Technology
Boulder, CO 80305-3328
(303) 497-5252
Huber@boulder.nist.gov

Keywords: air; alternative refrigerants; CFC; chemical engineering; chemistry; chlorofluorocarbons; cryogens; hydrochlorofluorocarbons; equation of state; fluids; hydrocarbons; HCFC; HFC; mixtures; natural gas; refrigerants; thermodynamic property; thermodynamics; thermophysics; transport property