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Topic: Hydrofluorocarbon

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	Haloalkane - Wikipedia, the free encyclopedia
		Halon is the group of haloalkanes with bromine as well as chlorine or fluorine groups.
		By the early 1980s, bromofluoroalkanes were in common use on aircraft, ships and large vehicles as well as in computer facilities and galleries.
		One such class are the hydrofluorocarbons (HFCs), which contain only hydrogen and fluorine.
	en.wikipedia.org /wiki/Hydrofluorocarbon (3681 words)

	Potentials of Hydrofluorocarbon (HFC) Solvents for Precision Cleaning (Site not responding. Last check: 2007-10-24)
		Hydrofluorocarbons, as the name suggests, only contain carbon, hydrogen, and fluorine.
		As a class, hydrofluorocarbons remain the only option which could be non-flammable, because they contain fluorine.
		R.S. Basu and K.P. Murphy, "Novel Hydrofluorocarbon Solvents as Alternatives to CFC-113 and Methyl Chloroform in Cleaning," Proceedings of NEPCON East 93, Boston 1993, pp.
	www.p2pays.org /ref/02/01696.htm (2145 words)

	1998 Fire Publications - Extinction of Hydrofluorocarbon Flames With F/H Ratios of Unity and Greater.
		Extinction of Hydrofluorocarbon Flames With F/H Ratios of Unity and Greater.
		Hydrofluorocarbons (HFCs) are being considered as replacements for chlorofluorocarbon (CFC) refrigerants because HFCs do not deplete stratospheric ozone when released to the atmosphere.
		In general, the exchange of a halogen atom in a molecule with hydrogen decreases the atmospheric lifetime of the compound.
	fire.nist.gov /bfrlpubs/fire98/art110.html (178 words)

	HYPER- from FOLDOC (Site not responding. Last check: 2007-10-24)
		A single (2^0 = 1) point (or "node") can be considered as a zero dimensional cube, two (2^1) nodes joined by a line (or "edge") are a one dimensional cube, four (2^2) nodes arranged in a square are a two dimensional cube and eight (2^3) nodes are an ordinary three dimensional cube.
		The fact that the number of directly connected, "nearest neighbour", nodes increases with the total size of the network is also highly desirable for a parallel computer.
		It received considerable government subsidies and, while it was considered well-designed and manufactured and a real threat to the Compaq Portable, the Ottawa firm that designed it was unable to beat Compaq.
	www.instantweb.com /d/dictionary/foldoc.cgi?query=HYPER- (1310 words)

	Waste News \| Waste Management/Recycling/Landfill Headlines
		The program, jointly developed by the EPA and the Association of Home Appliance Manufacturers, will cut hydrofluorocarbon emissions from the annual manufacture of 12 million refrigerator-freezers in the U.S. and more than 60 million worldwide.
		Hydrofluorocarbons have replaced ozone-depleting chlorofluorocarbons as a refrigerant and as a blowing agent for the insulation foam in refrigerators and freezers.
		Though hydrofluorocarbons do not harm the ozone layer, they are potent greenhouse gases, some 1,300 times more potent than carbon dioxide.
	www.wastenews.com /headlines2.html?id=1141841029 (196 words)

	Technology Review: Emerging Technologies and their Impact (Site not responding. Last check: 2007-10-24)
		The regulation of hydrofluorocarbons looms in Europe -- and may be copied by California.
		In the 1990s, air conditioning suppliers switched from the chlorofluorocarbon Freon to an equally troublesome hydrofluorocarbon called R-134a; while easy on the ozone, R-134a is a greenhouse gas that's 1,300 times more potent than CO The impact has been most acute in automotive applications, where refrigerants often leak out.
		According to the chemical companies, the new kinds of hydrofluorocarbons are no more than 150 more potent as greenhouse gases than CO the limit set by the EU for auto refrigerants after 2011.
	www.techreview.com /BizTech-Investing/wtr_16782,307,p1.html (926 words)

	Use of chlorofluoropolymers as lubricants for refrigerants - Patent 5198139
		This invention pertains to the use of chlorofluoropolyethers to impart lubricity to hydrofluorocarbon (HFC) refrigerants used in cooling and heating systems such as air conditioners, refrigerators and heat pumps.
		This invention pertains to a composition comprising a hydrofluorocarbon refrigerant and an amount of chlorofluoropolyether that is miscible therewith to impart desired lubricity to the refrigerant.
		Compositions of this invention can also be used to lubricate any system in which it is necessary to circulate a lubricant which is miscible in a hydrofluorocarbon, chlorofluorocarbon or chlorofluorohydrocarbon.
	www.freepatentsonline.com /5198139.html (2992 words)

	DuPont Fluorochemicals Develops Next Generation Refrigerants
		The new refrigerants are expected to be compatible with conventional hydrofluorocarbon (HFC) 134a automotive air conditioning systems with the potential for only minor modifications.
		These new refrigerants are expected to be commercialized within three to five years, in time to meet the timeline set by the pending EU F-Gas regulation.
		The F-Gas requirements call for the phaseout of hydrofluorocarbon HFC-134a in all new vehicle models beginning in 2011, and in all new cars by 2017, and replacement with alternatives having GWPs lower than 150.
	refrigerants.dupont.com /Suva/en_US/news/article20060209.html (575 words)

	ZoomInfo Web Summary: T. Bott (Site not responding. Last check: 2007-10-24)
		The role of meiofauna as grazers of microorganisms in streambed sediments was studied in White Clay Creek (Chester Co., PA).
		The appearance of radiolabel in animals after a gut clearing step to differentiate between ingested and absorbed compound was followed in time course experiments.
		Studies were performed to assess whether trifluoroacetate (TFA), a breakdown product of CFC replacement compounds, could affect the metabolism of acetate by freshwater benthic microbial communities and whether they could metabolize TFA under aerobic conditions.
	www.zoominfo.com /directory/Bott_T._94147903.htm (1772 words)

	Hydrofluorocarbon measurements in the Chlorofluorocarbon Alternatives Measurement Project
		Selected HFCs are measured as part of the Chlorofluorocarbon Alternatives Measurement Project within the Flask Sampling Program of the Halocarbons and other Atmospheric Trace Species Group (HATS) of NOAA/CMDL.
		Hydrofluorocarbons (HFCs) are compounds containing carbon, hydrogen, and fluorine.
		Certain chemicals within this class of compounds are viewed by industry and the scientific community as acceptable alternatives to chlorofluorocarbons and hydrochlorofluorocarbons on a long-term basis.
	www.cmdl.noaa.gov /noah/flask/hfc.html (386 words)

	Refrigerants in Vehicles (Site not responding. Last check: 2007-10-24)
		The refrigerant that replaced CFC12 in new vehicle air conditioning systems is R134a and has zero ozone depletion potential.
		This hydrofluorocarbon, like CFC, is also a greenhouse gas but has 80 percent lower greenhouse warming potential than CFC12.
		Under the U.S. Department of Energy's Voluntary Reporting of Greenhouse Gases, GM has reported an estimate of the total greenhouse gas emissions from the refrigerants used in new vehicle factory-fill air conditioning.
	www.gm.com /company/gmability/sustainability/reports/00/vision/environment/product5.html (199 words)

	Aerosol Solvents & Propellants - Honeywell Genesolv® Products
		For over 40 years, Honeywell has provided propellants and solvents to the aerosol industry.
		Honeywell’s Genesolv® S Series is the newest line of industrial solvents for aerosol applications.These solvents are based on HFC-245fa, a nonflammable, non-ozone depleting, non-VOC and low GWP hydrofluorocarbon.
		We manufacture Genetron® 134a, a nonflammable, non-VOC hydrofluorocarbon with excellent peropellant properties.
	www.honeywell.com /sites/sm/chemicals/genesolv/Aerosal.htm (129 words)

	Refron: What's New Full Story
		EPA finalizes rulemaking sustaining the Clean Air Act prohibition against venting hydrofluorocarbon (HFC) and perfluorocarbon (PFC) refrigerants.
		This rulemaking finds that the knowing venting of HFC and PFC refrigerants during the maintenance, service, repair, and disposal of air-conditioning and refrigeration equipment (i.e., appliances) remains illegal under Section 608 of the Clean Air Act.
		• Venting of all substitute refrigerants consisting of Class I or Class II ozone-depleting substance (ODS) and hydrofluorocarbon (HFC) and perfluorocarbon (PFC) refrigerants is prohibited under Section 608 of the Clean Air Act.
	www.refron.com /CompanyInfo/ReadMore.asp?NID=10006 (707 words)

	EPA - Climate Leaders - Sector Specific Core Modules Guidance
		Direct Emissions from the Cement Sector (PDF, 17 pp., 91 KB): This module is used to identify and estimate direct process GHG emissions of cement manufacturing (CO) from the calcination process.
		Direct HFC and PFC Emissions from Manufacturing Refrigeration and Air Conditioning Equipment (PDF, 13 pp., 180 KB): This module is used to identify and estimate GHG direct hydrofluorocarbon (HFC) emissions resulting from manufacturing of all refrigeration/air conditioning equipment.
		Direct Emissions from Iron and Steel Production (PDF, 17 pp., 117 KB): This module is used to identify and estimate direct GHG emissions (CO) from oxidation of the reducing agent and flux used in steel production and from the removal of carbon from the iron ore. Separate from combustion emissions.
	www.epa.gov /stateply/resources/sector.html (278 words)

	DefenseLINK News: EPA Honors "Best of the Best" (Site not responding. Last check: 2007-10-24)
		The Naval Research Laboratory received top honors for efforts to reduce or eliminate the use of halon, an ozone-depleting substance commonly found in refrigerants and fire extinguishers.
		Researchers tested numerous alternatives to halon and selected a nonozone-depleting hydrofluorocarbon for use in numerous applications aboard Navy ships.
		The U.S. Naval Surface Warfare Center was cited for efforts in converting shipboard air conditioning and refrigeration units to more ozone-friendly systems.
	www.defenselink.mil /news/Sep1997/n09261997_9709266.html (535 words)

	Hydrofluorocarbon 152A Registration (Site not responding. Last check: 2007-10-24)
		Hydrofluorocarbon 152A - Registration, import consent and bans
		Note: See Working with the Information on this Page section below for important notes about this data.
		For detailed chemical information see the chemical detail page.
	www.pesticideinfo.org /Detail_ChemReg.jsp?Rec_Id=PC34941 (335 words)

	Rapid growth of hydrofluorocarbon 134a and hydrochlorofluorocarbons 141b, 142b, and 22 from Advanced Global Atmospheric ...
		Rapid growth of hydrofluorocarbon 134a and hydrochlorofluorocarbons 141b, 142b, and 22 from Advanced Global Atmospheric Gases Experiment (AGAGE) observations at Cape Grim, Tasmania, and Mace Head, Ireland
		An update of in situ Advanced Global Atmospheric Gases Experiment (AGAGE) hydrofluorocarbon (HFC)/hydrochlorofluorocarbon (HCFC) measurements made at Mace Head, Ireland, and Cape Grim, Tasmania, from 1998 to 2002 are reported.
		(2004), Rapid growth of hydrofluorocarbon 134a and hydrochlorofluorocarbons 141b, 142b, and 22 from Advanced Global Atmospheric Gases Experiment (AGAGE) observations at Cape Grim, Tasmania, and Mace Head, Ireland, J.
	www.agu.org /pubs/crossref/2004/2003JD004277.shtml (509 words)

	Hydrofluorocarbon (HFC) Measurements Collected by the NOAA/CMDL Flask Sampling Network at NOAA/CMDL/HATS
		Hydrofluorocarbon (HFC) Measurements Collected by the NOAA/CMDL Flask Sampling Network at NOAA/CMDL/HATS
		The National Oceanic and Atmospheric Administration's (NOAA) Climate Monitoring and Diagnostics Laboratory (CMDL) has collected hydrofluorocarbons (HFCs) from flask samples and in situ instruments located at monitoring stations and 3 ship cruises.
		The Halocarbons and other Trace Species Group (HATS)of NOAA/CMDL collected flask pair measurements for HFC-134a (1,1,1,2-tetrafluoroethane) from network stations, from shipboard instruments, and archived air samples.
	gcmd.gsfc.nasa.gov /records/GCMD_NOAA_CMDL_NOAH_HFCS.html (391 words)

	Amazon.com: A study of water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures (SuDoc C ... (Site not responding. Last check: 2007-10-24)
		This item is not eligible for Amazon Prime, but over a million other items are.
		I own the rights to this title and would like to make it available again through Amazon.
		A study of water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures (SuDoc C 13.58:6330) (Unknown Binding)
	www.amazon.com /exec/obidos/tg/detail/-/B000110N0A?v=glance (324 words)

	2000 Building Publications - Water-to-Water Heat Pump Using Hydrocarbon and Hydrofluorocarbon Zeotropic Mixtures With ... (Site not responding. Last check: 2007-10-24)
		2000 Building Publications - Water-to-Water Heat Pump Using Hydrocarbon and Hydrofluorocarbon Zeotropic Mixtures With and Without an Internal Heat Exchanger.
		Water-to-Water Heat Pump Using Hydrocarbon and Hydrofluorocarbon Zeotropic Mixtures With and Without an Internal Heat Exchanger.
		The application of the internal heat exchanger degraded R29O's performance.
	fire.nist.gov /bfrlpubs/build00/art014.html (276 words)

	EPA - Climate Leaders - Partner Resources - Cross Sector Core Modules Guidance
		The guideline is divided into Road, Air, Waterborne, Rail Transport, and Other Mobile Sources.
		Direct HFC and PFC Emissions from Use of Refrigeration and Air Conditioning Units (PDF, 24 pp., 184KB): This module is used to identify and estimate GHG direct hydrofluorocarbon (HFC) emissions resulting from commercial refrigeration and air conditioning.
		This guidance addresses emissions from operating commercial equipment, including service, disposal, and retrofit emissions.
	www.epa.gov /stateply/resources/cross_sector.html (314 words)

	yet2.com - Browse by Category
		This unique proven technology scouting tool captures the inventive skills and core competencies of the small to medium enterprise sector, providing your organisation with pre-qualified technology prospects.
		As the stationary air conditioning and domestic refrigeration industry transitions to non-ozone destroying hydrofluorocarbon (HFC) refrigerants, conventional mineral oil (MO) and alkyl benzene (AB) compressor lubricants formerly used with CFC and HCFC refrigerants are being replaced with polyol ester (POE) lubricants, due to insufficient miscibility of MO and AB with HFCs.
		Honeywell has developed a unique, continuous process for separating water from refrigerants, solvents, and other chemicals.
	www.yet2.com /app/find/category?type=1&id=244800 (370 words)

	Dove.com \| Silky Dry Aerosol Ingredients
		Butane, Hydrofluorocarbon 152a, Cyclopentasiloxane, Isopropyl Palmitate, Talc, Quaternium-18 Hectorite, Fragrance (Parfum), Propylene Carbonate
		Butane, Hydrofluorocarbon 152a, Cyclopentasiloxane, Isopropyl Palmitate, Talc, Silk Powder (Serica), Quaternium- 18 Hectorite, Fragrance (Parfum), Propylene Carbonate, BHT.
		It works excellent, doesn't leave a film on my clothes, and smells great too!"
	www.dove.us /your_skin/aerosols_ingred.asp (55 words)

	Beauty Effex Waterless Instant Finish Spray (Site not responding. Last check: 2007-10-24)
		Hold container about 8 inches from hair and spray with a slow sweeping motion.
		SD Alcohol 40-B, Hydrofluorocarbon 152a, Isobutane, Octylacrylamide/Acrylates/Butylaminoethyl Methacrylate Copolymer, Aminomethyl Propanol, Panthenol, PEG/PPG-18/18 Dimethicone, Pentaerythrityl Tetracaprylate/Tetracaprate, PPG-2 Myristyl Ether Propionate, Quaternium-52, Triethyl Citrate, Quaternium-52, Triethyl Citrate, PPG-5-Ceteth-20, Fragrance (Parfum).
		Do not use near fire or flame or while smoking.
	www.folica.com /Beauty_Effex_Wa_d1395.html (136 words)

	Screw Feeder and Screw Conveyor for INEOS Fluor
		Screw Feeders and Screw Conveyors for hydrofluorocarbon (HFC) Production Plant
		Solids handling and processing equipment specialist, Ajax Equipment is supplying a screw feeder, screw conveyor and associated plant to INEOS Fluor's hydrofluorocarbon (HFC) production facility.
		Over 6 metres in length, the inclined 350mm screw feeder is designed to transfer lime to a slaker reaction vessel, and a second reaction vessel via an Ajax screw conveyor.
	www.ajax.co.uk /fluor.htm (278 words)

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