منابع مشابه
Growth rates of stratospheric HCFC-22
The Michelson Interferometer for Passive Atmospheric Sounding onboard ENVISAT (MIPAS-E) offers the opportunity to detect and spectrally resolve many atmospheric minor constituents affecting atmospheric chemistry. In this paper, we describe an algorithm produced to retrieve HCFC–22 profiles from MIPAS-E measurements made in 2003 and present results from this scheme between 300 and 50 mb. By comp...
متن کاملHfc - 23 Emissions from Hcfc - 22 Production
The compound HFC-23 (Trifluoromethane or CHF3), a potent greenhouse gas with a 100-year global warming potential of 11,700, is generated as a by-product during the manufacture of HCFC-22 (chlorodifluoromethane or CHClF2). This paper outlines options and issues for good practice guidance in the national inventory management of HFC-23 emissions from HCFC-22 production. The issues presented are or...
متن کاملGlobal and regional emission estimates for HCFC-22*
HCFC-22 (CHClF2, chlorodifluoromethane) is an ozone-depleting substance (ODS) as well as a significant greenhouse gas (GHG). HCFC-22 has been used widely as a refrigerant fluid in cooling and air-conditioning equipment since the 1960s, and it has also served as a traditional substitute for some chlorofluorocarbons (CFCs) controlled under the Montreal Protocol. A low frequency record on troposph...
متن کاملEvaporation and Condensation Heat Transfer Coefficients for a HCFC-124/HCFC-22/HFC-152a Blend and CFC-12
Tests were run with both R-12 and R-l34a in a water calorimeter. Refrigerant 12 was run with mineral oil as the lubricant. Evaporating and condensing heat transfer coefficients were calculated over a range of temperatures. To evaluate the impact of the lubricant on the heat transfer coefficients, a oil separator was added. Tests were then run with the oil separator over the same temperature ran...
متن کاملMetabolism and toxicity of hydrochlorofluorocarbons: current knowledge and needs for the future.
Hydrochlorofluorocarbons (HCFCs) are being developed as replacements for chlorofluorocarbons (CFCs) that deplete stratospheric ozone. The depletion of stratospheric ozone may increase the intensity of ultraviolet radiation at the earth's surface, which may be associated with global, adverse human health effects. The greater tropospheric lability of HCFCs, which is due to the presence of C-H bon...
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ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2008
ISSN: 1680-7324
DOI: 10.5194/acp-8-73-2008