Historical
ANSI/ASHRAE 23-2005
Methods of Testing for Rating Positive Displacement Refrigerant Compressors and Condensing Units
This standard applies to the methods of testing for rating single-stage positive-displacement refrigerant compressors and condensing units that (a) do not have liquid injection and (b) are operated at subcritical (saturated) temperatures of the refrigerant. It also applies to the methods of testing for rating single-stage positive-displacement refrigerant compressors and condensing units that (a) incorporate liquid injection that is controlled by a steady flow rate method and (b) are operated at subcritical (saturated) temperatures of the refrigerant.
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]