What is hydrochlorofluorocarbon used for?
Reducing Hydrofluorocarbon (HFC) Use and Emissions in the Federal Sector through SNAP. Hydrofluorocarbons (HFCs) are greenhouse gases (GHGs) commonly used by federal agencies in a wide variety of applications, including refrigeration, air-conditioning (AC), building insulation, fire extinguishing systems, and aerosols.
When were HFC refrigerants introduced?
They became widely used for this purpose beginning in the late 1980s, with the introduction of the Montreal Protocol, which phased out the use of chemicals such as halons and chlorofluorocarbons (CFCs) that contribute to the depletion of Earth’s ozone layer.
When were CFCs phased out?
By 1987, just two years after the hole was discovered, an international treaty was in place that cut the use of CFCs in half. Three years later in 1990, the Montreal Protocol was strengthened to ban the use of CFCs altogether in industrialised countries by the year 2000 and by the year 2010 in developing countries.
When was HCFC discovered?
HCFCs and their cousins, hydrofluorocarbons (HFCs), were created in the 1980s as substitutes for chlorofluorocarbons (CFCs) for use in refrigeration and a wide variety of manufacturing processes.
What’s the difference between a CFC and a hydrochlorofluorocarbon?
The term hydrochlorofluorocarbon (HCFC) refers to halogenated hydrocarbons that contain chlorine and/or fluorine in place of some hydrogen atoms in the molecule. They are chemical cousins of the chlorofluorocarbons (CFCs), but differ from them in that they have less chlorine.
What kind of compounds are hydrochlorofluorocarbons made out of?
Hydrochlorofluorocarbons. Hydrochlorofluorocarbons (HCFCs) are compounds consisting of hydrogen, chlorine, fluorine, and carbon atoms. HCFCs and hydrofluorocarbons (HFCs) were created in the 1980s as substitutes for chlorofluorocarbons (CFCs) for use in refrigeration and a wide variety of manufacturing processes.
What is the formula for hydro chlorofluorocarbons?
Hydro-chlorofluorocarbons (HCFCs): when derived from methane and ethane these compounds have the formula CCl m F n H 4−m−n and C 2 Cl x F y H 6−x−y, where m, n, x, and y are nonzero. and bromofluorocarbons have formulae similar to the CFCs and HCFCs but also include bromine.
How are hydrochlorofluorocarbons used in everyday life?
Promising applications include the recovery of chlorinated hydrocarbons, chlorofluorocarbons (CFCs) and/or hydrochlorofluorocarbons (HCFCs). These solvents are typically expensive (around US$2 – 8/lb) and difficult to recover using conventional processes, such as carbon adsorption and compression-condensation.