If, for example, an EES 5-user license is in use, a 5-user EES_REFPROP interface is required. The number of users for the EES_REFPROP interface must match the number of users for the EES license. Note that the EES_REFPROP interface is paired to an EES license and it will only operate with that license. Single and multiple-user licenses for the EES_REFPROP interface can be ordered. If you are involved in modeling refrigeration systems that use property information not included in EES, you will find the NIST REFPROP program and the EES_REFPROP interface to be of considerable interest. Transport properties as well as thermodynamic properties are provided in all fluid regimes, including compressed liquid and near critical states.Īn interface has been developed for REFPROP that allows the NIST property data base to be used with the equation-solving and other features of EES.
REFPROP uses the most advanced methods for estimating property data.
REFPROP also provides high accuracy data for mixtures such as ammonia-water and most organic refrigeration mixtures. Included in the database are the "natural" refrigerants, carbon dioxide, ammonia, propane, isobutane and other hydrocarbons. The National Institute of Standards and Technology (NIST) has developed REFPROP (also called NIST Standard Reference Database 23), which provides high accuracy property data for pure refrigerants and refrigerant mixtures. Click here to view a list of the fluids for which property data are available in EES. EES provides properties for many pure fluids and some refrigerant mixtures such as R407C, R410A, R449A, R450A.
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