- Hydrochlorofluorocarbons
- (HCFCs)Chemicals composed of one or more carbon atoms and varying numbers of hydrogen, chlorine, and fluorine atoms.U.S. Dept. of Energy, Energy Information Administration's Energy Glossary
Energy terms . 2014.
Energy terms . 2014.
hydrochlorofluorocarbons — n. type of greenhouse gas, one of the gases thought to be responsible for the hole in the ozone layer, HCFC (Ecology) … English contemporary dictionary
Chlorofluorocarbon — A chlorofluorocarbon (CFC) is an organic compound that contains carbon, chlorine, and fluorine, produced as a volatile derivative of methane and ethane. A common subclass are the hydrochlorofluorocarbons (HCFCs), which contain hydrogen, as well.… … Wikipedia
Haloalkane — The haloalkanes (also known as halogenoalkanes or alkyl halides) are a group of chemical compounds, consisting of alkanes, such as methane or ethane, with one or more halogens linked, such as chlorine or fluorine, making them a type of organic… … Wikipedia
Montreal Protocol — For other similarly named agreements, see Montreal Convention (disambiguation). The largest Antarctic ozone hole recorded as of September 2006 The Montreal Protocol on Substances That Deplete the Ozone Layer (a protocol to the Vienna Convention… … Wikipedia
Ozone layer — The ozone layer is a layer in Earth s atmosphere which contains relatively high concentrations of ozone (O3). This layer absorbs 97–99% of the Sun s high frequency ultraviolet light, which is potentially damaging to the life forms on Earth.[1] It … Wikipedia
Ozone depletion — Image of the largest Antarctic ozone hole ever recorded (September 2006) Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in Earth s… … Wikipedia
Cloud forcing — (sometimes described as cloud radiative forcing) is, in meteorology, the difference between the radiation budget components for average cloud conditions and cloud free conditions. Much of the interest in cloud forcing relates to its role as a… … Wikipedia
Polystyrene — For other uses, see Polystyrene (disambiguation). Expanded polystyrene packaging … Wikipedia
Freon — is DuPont s trade name for its odorless, colorless, nonflammable, and noncorrosive chlorofluorocarbon and hydrochlorofluorocarbon refrigerants, which are used in air conditioning and refrigeration systems.HistoryFreon was initially developed in… … Wikipedia
R-value (insulation) — The R value or R value is a measure of thermal resistance (K·m²/W) [Oak Ridge National Laboratory, [http://www.ornl.gov/sci/roofs+walls/insulation/ins 02.html Which Kind Of Insulation Is Best?] , retrieved 2008 07 13.] used in the building and… … Wikipedia