ASHRAE标准23.2提供了在制冷剂超临界压力下运行的容积式压缩机和压缩机组性能评级的试验方法。本标准不适用于在制冷剂超临界压力下运行的容积式压缩机（例如，在CO2上运行的压缩机）的性能测试。

ASHRAE Standard 23.2 provides methods of test for rating the performance of positive displacement compressors and compressor units that operate at supercritical pressures of the refrigerant.It does not apply to the performance testing of positive displacement compressors that operate at supercritical pressures of the refrigerant (for example, compressors that operate on CO2).