Excel Refrigeration and Heat Pump Systems: The vapor-compression refrigeration cycle is used widely throughout our every-day life and industrial processes as well. Imagine your life without air conditioning and without refrigeration of food (and beverages!). The Excel files offered here will help you refresh your memory on the engineering computations needed to determine how much power is needed to provide the desired cooling effect. Getting good at analyzing the vapor-compression refrigeration cycle enables you to communicate the benefits of heat pump operation, and how it works.
Vapor Compression Refrigeration Cycle Analysis
Refrigerant R134a Thermodynamic Properties (Moran)
Refrigerant R134a Thermodynamic Properties (NIST)
Carbon Dioxide (CO2) Thermodynamic Properties (NIST) An emerging concept for a safe refrigerant working fluid is to use carbon dioxide (CO2). This Excel file contains tabular data for saturated liquid, saturated vapor, and superheated vapor carbon dioxide. Source of data is Ohio University, which ultimately used the NIST Chemistry Web Book as its source.
Thermodynamic properties of saturated and superheated ammonia (NH3) (Moran tables). Ammonia was first-used as a refrigerant in the early development of the vapor-compression refrigeration cycle. It is now used for very large scale refrigeration installations, but it is a lethal inhalation hazard if leaks occur.
Thermodynamic properties of saturated and superheated refrigerant R22. R22 is the refrigerant which replaced R12 (Freon-12) as a result of environmental considerations.