HFO-based alternative for R-410A in commercial refrigeration.

R-410A is the predominant refrigerant used in air conditioning systems. More recently, it has been finding increased use in commercial refrigeration, particularly in Japan. However, due the relatively high global warming potential of R-410A, lower GWP alternatives are needed. Along with the Kigali amendment to the Montreal Protocol to phase down use of HFCs, Japan has enacted HFC regulations with specific GWP limits. For commercial condensing units and larger refrigeration systems, a GWP limit of <1500 GWP will be implemented starting in 2025. To address this need, a nonflammable hydrofluoroolefin (HFO) refrigerant mixture with <1500 GWP named XP41 (R-463A) has been developed. This paper will present basic property information for R-463A, including cycle performance, materials compatibility data.

R-410A是空调系统中使用的主要制冷剂。近年来，它在商业制冷领域的应用日益增加，尤其在日本。然而，由于R-410A具有相对较高的全球变暖潜能值（Global Warming Potential，GWP），因此需要更低GWP的替代物。随着《蒙特利尔议定书》（Montreal Protocol）的基加利修正案（Kigali Amendment）要求逐步减少氢氟烃（Hydrofluorocarbon，HFC）的使用，日本已颁布了具有特定GWP限值的HFC法规。对于商用冷凝机组和大型制冷系统，自2025年起将实施GWP限值<1500的规定。为满足这一需求，已开发出一种名为XP41（R-463A）的不可燃氢氟烯烃（Hydrofluoroolefin，HFO）制冷剂混合物，其GWP<1500。本文将介绍R-463A的基本特性信息，包括循环性能和材料兼容性数据。