本标准适用于电机驱动、单级和可变容量、单级和两级容积式制冷剂压缩机，以及在亚临界和跨临界制冷应用中使用二氧化碳的压缩机组。本标准还适用于容积式压缩机和使用二氧化碳运行的压缩机组性能数据的表示。对于国际单位制，参见AHRI 571-2012

This standard applies to electric motor driven, single and variable capacity, single and two stage Positive Displacement Refrigerant Compressors and Compressor Units operating with carbon dioxide in both subcritical and transcritical applications for refrigeration. This standard also applies to the presentation of performance data for Positive Displacement Compressor and Compressor Units operating with carbon dioxide.For SI Units, seeAHRI 571-2012