What is a HCFC made up of?
HCFCs are artificial substances composed of hydrogen, chlorine, fluorine, and carbon with a shorter length of stay in the atmosphere (from 1 to 17 years) (Wallington et al., 1994).
What elements are in HCFCs?
Hydrochlorofluorocarbons (HCFCs) contain Hydrogen, Chlorine, Fluorine, and Carbon atoms.
What is the difference between CFCs and HCFCs?
CFCs, or Chlorofluorocarbons, are the original refrigerant. They consist of Carbon, Chlorine, and Fluorine. HCFCs, or Hydrochloroflourocarbons, are the close neighbor of CFCs. The main difference between the two types of refrigerant is that HCFCs contain one additional hydrogen atom compared to CFCs.
How are HCFCs made?
CFCs and HCFCs are usually produced by halogen exchange starting from chlorinated methanes and ethanes. The brominated derivatives are generated by free-radical reactions of the chlorofluorocarbons, replacing C-H bonds with C-Br bonds. The most common CFCs are small molecules containing only one or two carbon atoms.
What chemicals are HFCs?
Hydrofluorocarbons (HFCs) are a class ofhuman-made chemical compounds that contain only fluorine, carbon and hydrogen.
Where are HFCs used?
refrigeration
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.
Why are HFCs better than CFCs?
Because they contain hydrogen, HCFCs break down more easily in the atmosphere than do CFCs. Therefore, HCFCs have less ozone depletion potential, in addition to less global-warming potential. HFCs do not contain chlorine and do not contribute to destruction of stratospheric ozone.
What is the difference between an HCFC and an HFC?
HCFC refers to hydrochlorofluorocarbon, while HFC refers to hydrofluorocarbon. The key difference between HCFC and HFC is that HCFC contains chlorine and can cause harm to the ozone layer, whereas HFC is free of chlorine and does not harm the ozone layer.
What is the meaning of HCFCs?
HCFCs are compounds containing carbon, hydrogen, chlorine and fluorine. Industry and the scientific community view certain chemicals within this class of compounds as acceptable temporary alternatives to chlorofluorocarbons.
What were HCFCs used for?
HCFCs were used in a wide variety of applications, including refrigeration, air conditioning, foam blowing, solvents, aerosols, and fire suppression.