Thermodynamic properties of refrigerants influence their selection and usage in refrigeration systems. System designers must know the properties of refrigerants in order to accurately determine the performance of refrigeration systems. Precise properties of refrigerants must be available to system designers in order to insure that their systems would satisfy their intended application.

Different manufacturers give away software packages that calculate refrigerant properties for the users of their own refrigerants. Most of these packages are difficult to use since they were designed for engineers who most the time can live without the user friendliness of software. Also, it would take several different programs to calculate properties of refrigerants when a user tries to compare properties of different refrigerants from different manufacturers.

SPI created this program to give the user a single user friendly tool for refrigerant properties calculations. It is like having a handy calculator that gives access to all available refrigerant properties including new and popular mixtures.

RefCycle provides system designers with a very valuable tool which is system cycle analysis. The designer would enter known system conditions and this program will calculate theoretically the properties of different components around the system. We also provided an option that will allow the designer to compare up to 15 different conditions and refrigerants at once.

A very important feature was also incorporated into this program which offers users a great flexibility. Other programs can call this program and execute any option automatically and then retrieve the results to use in their programs. A sample Excel spreadsheet was included as a demonstration of this feature.

Reports were designed to give users flexibility. Users can print results directly to any printer supported by Windows and if they want, can send it to a file in the .CSV format compatible with many spreadsheet programs. If results were sent to a file, the user would have the option of viewing that file from Microsoft's Excel, Windows Notepad or Wordpad provided with Windows 95 (in the order shown and depending on program availability).