Search results
Results From The WOW.Com Content Network
Uses. 1,1,1,2-Tetrafluoroethane is a non-flammable gas used primarily as a "high-temperature" refrigerant for domestic refrigeration and automobile air conditioners. These devices began using 1,1,1,2-tetrafluoroethane in the early 1990s as a replacement for the more environmentally harmful R-12. Retrofit kits are available to convert units that ...
0.0824 W/m·K (0.0478 Btu/hr·ft°F) Thermal Conductivity at 25 °C vapor at 1 atm 0.0145 W/m·K (0.00836 Btu/hr·ft°F) Viscosity at 25 °C, liquid 0.202 mPa·S (cP) Viscosity at 25 °C, vapor at 1 atm 0.012 mPa·S (cP) Solubility in water at 25 °C and 1 atm 0.15% by weight Solubility of water in HFC-134a at 25 °C 0.11% by weight
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 1,1,2,2-Tetrafluoroethane (also called R-134 or HFC-134) is a hydrofluorocarbon, a fluorinated alkane. It is an isomer of the more-used 1,1,1,2-tetrafluoroethane (R-134a). It is used as a foam expansion agent and heat transfer fluid.
Download as PDF; Printable version; Appearance. move to sidebar hide. This is a list of refrigerants ... 71-55-6: 5.0 [3] [4] 0.12 [4] 160 [5] 133.4 [7] 74 [8] HCFC ...
Refrigerant. A refrigerant is a working fluid used in the refrigeration cycle of air conditioning systems and heat pumps where in most cases they undergo a repeated phase transition from a liquid to a gas and back again. Refrigerants are heavily regulated because of their toxicity and flammability and the contribution of CFC and HCFC ...
For this reason, 2,3,3,3‑tetrafluoropropene is the pre-eminent replacement for R-134a in vehicular air conditioners. As of 2022, 90% of new U.S. vehicles are estimated to use HFO-1234yf. [6] Unlike previous vehicular refrigerants, 2,3,3,3‑tetrafluoropropene is flammable, but does not increase fire risk in internal combustion engines.
Vapour-compression refrigeration or vapor-compression refrigeration system ( VCRS ), [ 1] in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air conditioning of buildings and automobiles. It is also used in domestic and commercial refrigerators, large-scale warehouses ...
R-407C. R-407c container. R-407C is a mixture of hydrofluorocarbons used as a refrigerant. It is a zeotropic blend of difluoromethane (R-32), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-134a). Difluoromethane serves to provide the heat capacity, pentafluoroethane decreases flammability, tetrafluoroethane reduces pressure. [ 1]