DuPont Refrigerant Expert (DUPREX)DUPREX Version 3.2 is a software tool from DuPont specifically developed to allow users to easily and quickly generate data for DuPont refrigerants, including:thermodynamic propertiestransport propertiestheoretical refrigeration cycle calculationsData can be calculated for a variety of direct expansion systems (single stage, single stage with internal heat exchanger, two stage cascade, and single stage heat pump).DUPREX is available in:6 languages: English, German, French, Spanish, Italian, and DutchSI and ENG units of measure