نتایج جستجو برای: hcfc
تعداد نتایج: 174 فیلتر نتایج به سال:
The phaseout ofhydrochlorofluorocarbon (HCFC)-22 will require manufacturers of air-conditioning and refrigeration equipment to find suitable alternatives for this widely-used refrigerant. The R-22 Alternative Refrigerants Evaluation Program (AREP) was established by the Air-Conditioning and Refrigeration Institute (ARI) to assist manufacturers in obtaining performance data on a multitude of R-2...
Abstract. Monitoring atmospheric anthropogenic halocarbons plays an important role in tracking their concentrations accordance with international agreements on emissions of ozone-depleting substances and, thus, estimating the ozone layer recovery. Within Network for Detection Atmospheric Composition Change (NDACC), regular Fourier transform infrared (FTIR) measurements can provide information a...
Atmospheric measurements show that emissions of hydrofluorocarbons (HFCs) and hydrochlorofluorocarbons are now the primary drivers of the positive growth in synthetic greenhouse gas (SGHG) radiative forcing. We infer recent SGHG emissions and examine the impact of future emissions scenarios, with a particular focus on proposals to reduce HFC use under the Montreal Protocol. If these proposals a...
In many cases, polyol ester (POE) and polyalkylene glycol (PAG) lubricants used with HFC refrigerants, may cause long-term reliability and stability problems. Mineral oil lubricants are much more stable in the long run and do not suffer from stability problems nearly as much as POE and PAG lubricants. HFC based refrigerants and blends are, in general, nonmiscible in mineral oils, and will not r...
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