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molecular formula; CAS registry number / blend name; Atmospheric lifetime in years; Semi-empirical ozone depletion potential, ODP (normalized to be 1 for R-11) Net global warming potential, GWP, over a 100-year time horizon (normalized to be 1 for R-744, carbon dioxide)
Pentafluoroethane is a common replacement for various chlorofluorocarbons (i.e Freon) in new refrigerant systems, especially for air-conditioning. The zeotropic mix of difluoromethane with pentafluoroethane ( R-125 ) and tetrafluoroethane ( R-134a ) is known as R-407A through R-407F depending on the composition.
R-410A was invented and patented by Allied Signal (now Honeywell) in 1991. [5] Other producers around the world have been licensed to manufacture and sell R-410A. [6] R-410A was successfully commercialized in the air conditioning segment by a combined effort of Carrier Corporation, Emerson Climate Technologies, Inc., Copeland Scroll Compressors (a division of Emerson Electric Company), and ...
A DuPont R-134a refrigerant. A refrigerant is a working fluid used in cooling, heating or reverse cooling and heating of air conditioning systems and heat pumps where they undergo a repeated phase transition from a liquid to a gas and back again.
Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems. [1] A heat pump is a mechanical system that transmits heat from one location (the "source") at a certain temperature to another location (the "sink" or "heat sink") at a higher temperature. [2]
packaged terminal air conditioner An air conditioner and heater combined into a single, electrically powered unit, typically installed through a wall and often found in hotels. Abbreviated PTAC. PAG Polyalkylene glycol is a synthetic oil used in A/C systems to lubricate the compressor.
The energy efficiency and system capacity of systems designed for R-22 is slightly greater using R-22 than the available substitutes. [11] R-407A is for use in low- and medium-temp refrigeration. Uses a polyolester (POE) oil. R-407C is for use in air conditioning. Uses a minimum of 20 percent POE oil.
R-12 was used in most refrigeration and vehicle air conditioning applications prior to 1994 before being replaced by 1,1,1,2-tetrafluoroethane (R-134a), which has an insignificant ozone depletion potential. Automobile manufacturers began phasing in R-134a around 1993 [citation needed].