Honeywell International Inc.
HEAT TRANSFER COMPOSITIONS, METHODS, AND SYSTEMS

Abstract:

The present invention relates to a refrigerant composition comprising at least about 98.5% by weight of the following three compounds, with each compound being present in the following relative percentages: 16.5% to 21.5% by weight difluoromethane (HFC-32); 68.5% to 80.5% by weight of 2,3,3,3-tetrafluoropropene (HFO-1234yf); and 3.0% to 10.0% by weight fluoroethane (HFC-161), and to the use of the refrigerant in a heat exchange system, including air conditioning, refrigeration applications and heat pump applications and to the use of such compositions as a replacement of the refrigerant R-410A or R1234yf for heating and cooling applications.