This standard applies to the methods of testing for rating the thermodynamic performance of single-stage positive- displacement refrigerant compressors and condensing units that operate at subcritical temperatures of the refrigerant which either (a) do not have liquid injection or (b) incorporate liquid injection that is achieved by compressor motor power.

This standard applies to all of the refrigerants listed in ASHRAE Standard 34, Designation and Safety Classification of Refrigerants, that fall within the scope defined in Section 2.1.

PURPOSE

The purpose of this standard is to provide methods of testing for rating the thermodynamic performance of positive displacement refrigerant compressors and condensing units that operate at subcritical temperatures of the refrigerant.