Disclosed herein are hydrofluorocarbon refrigerant or heat transfer fluid compositions that are useful in refrigerain or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab.single pass heat exchangers.
本文披露了一种在制冷或空调设备中有用的氢
氟碳制冷剂或传热流体组合物。本发明的组合物还适用于采用双级压缩机或单板、单通道换热器的离心压缩机设备。