Compositions comprising difluoromethane, tetrafluoropropene and carbon dioxide and uses thereof

The present application relates to compositions comprising difluoromethane, tetrafluoropropene and carbon dioxide and uses thereof. According to the present invention, a refrigerant composition is disclosed. The composition comprises a refrigerant mixture consisting essentially of HFC-32, HFO-1234yf, and CO2, and a method for producing the same. The compositions may be used in methods of cooling and heating, methods for replacing refrigerant R-32, and in refrigeration systems, air conditioning systems, or heat pump systems. These inventive compositions match the cooling performance of R-32, wherein the GWP is less than 400 or less than 300. 本申请涉及包含二氟甲烷、四氟丙烯和二氧化碳的组合物及其用途。根据本发明，公开了制冷剂组合物。所述组合物包含基本上由HFC-32、HFO-1234yf和CO2组成的制冷剂混合物。所述组合物可用于制冷和制热的方法、用于替换制冷剂R-32的方法，以及制冷系统、空调系统或热泵系统中。这些发明组合物匹配R-32的冷却性能，其中GWP小于400或小于300。