This briefing explained how cfcs contribute to climate change, opportunities in international treaties and pending federal legislation such as the american clean energy and security act of 2009 (hr 2454) to incentivize safe collection and destruction, and the pros and cons of alternative gases cfcs. Present information from secondary sources to identify alternative chemicals used to replace cfcs and evaluate the effectiveness of their use as a replacement for cfcs. Read more http://roybestjalikloperu/ges&keyword=ozone+depletion+ essay+conclusion ozone depletion essay conclusion companies are finding substitutes for cfcs, and people in general are becoming more awareness of the dangers of ozone layer depletion if harmful uv b rays continue to get worse it can. The alternative technologies already adopted have been effective and inexpensive enough that consumers have not yet felt any noticeable impacts ( except for an increase in automobile air conditioning service costs) (unep, 1994 ) a group of over two dozen industry experts estimated the total cfc phase-out cost in. This protocol controls the consumption and production of chlorine and bromine- containing chemicals that destroy stratospheric ozone such as cfcs, hcfcs, methyl set by the montreal protocol, both developed and developing countries are proceeding to reduce the consumption of ods using alternative substances.
Subsections: methane (see below), ozone and cfcs (1970-1980), other gases as a major factor (the 1980s), struggling toward policies it absorbed radiation were already quite opaque, so you had to add a lot more of the gas to make a serious difference (for more on this saturation see the essay on basic radiation. Costs are likely to increase for a wide range of consumer products and services because few of the alternatives to cfcs will be as inexpensive to produce in addition, product substitutes may not be able to operate as efficiently as those using cfcs, resulting in higher their energy consumption ” douglas. The first observations of the feedstocks, cfc-216ba (1,2- dichlorohexafluoropropane) and cfc-216ca (1,3-dichlorohexafluoropropane), as well as the cfc substitute hcfc-225ca (3,3-dichloro-1,1,1,2,2- pentafluoropropane), are reported in air samples collected between 1978 and 2012 at cape grim,. 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 because all three of these.
The hcfcs are transitional cfcs replacements, used as refrigerants, solvents, blowing agents for plastic foam manufacture, and fire extinguishers in terms of ozone depletion potential (odp), in comparison to cfcs that have odp 06 – 10, these hcfcs have lower odps (001 – 05) in terms of global warming potential. Substitutes for air-conditioning and refrigeration applications are now available, such as that hcfc-22 can be replaced by hfc-410a, cfc-12 can be substitute food containers such as hydrocarbon blown polystyrene, plastic film wrap and bags the following is a summary of the related control:.
Depletion of the ozone layer and the montreal protocol to ban cfcs. However, certain chemicals used as substitutes for harmful man-made cfcs ( chlorofluorocarbons) are potent global warming gases, contributing emissions growing at a rate of about seven per cent annually, and can be expected to “very significantly” affect climate change there are positive indications. Cfc substitutes: good for the ozone layer, bad for climate date: february 24, 2012 source: empa summary: the montreal protocol led to a global phase-out of most substances that deplete the ozone layer, such as chlorofluorocarbons ( cfcs) a happy side-effect of the gradual ban of these products is that the earth's.