Thermal Conductivities of Alternatives to CFC-11 for Foam Insulation

Autor:	Maria L. V. Ramires, John B Howley, Laurence Cusco, Richard A. Perkins, Arno Laesecke, Sigrun Matthes
Rok vydání:	2001
Předmět:	Trichlorofluoromethane Chemistry General Chemical Engineering Vapor phase Analytical chemistry Spray foams General Chemistry Pentane Octafluorocyclobutane chemistry.chemical_compound Thermal conductivity Thermal Cyclopentane Nuclear chemistry
Zdroj:	Journal of Chemical & Engineering Data. 46:428-432
ISSN:	1520-5134 0021-9568
DOI:	10.1021/je990337k
Popis:	The present work examines the thermal conductivities of several dilute vapors which are potential alternatives to chlorofluorocarbons (CFCs) for cellular-plastic foams. Thermal conductivity data are reported in the vapor phase, from 280 to 340 K, for trichlorofluoromethane (CFC-11), 1,1,1-trifluoro-2,2-dichloroethane (HCFC-123), 1-fluoro-1,1-dichloroethane (HCFC-141b), 1,1,2-trifluoroethane (HFC-143), 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea), 1,1,1,2,3,3-hexafluoropropane (HFC-236ea), 1,1,1,3,3,3-hexafluoropropane (HFC-236fa), 1,1,2,2,3-pentafluoropropane (HFC-245ca), 2-(difluoromethoxy)-1,1,1-trifluoroethane (HFE-245fa1), 2-(trifluoromethoxy)-1,1,1-trifluoroethane (HFE-263fb1), octafluorocyclobutane (RC318), 1,1,1-trifluoroacetone, and a 75 mol % cyclopentane + 25 mol % pentane mixture. These data were obtained with a transient hot-wire instrument and are estimated to have an uncertainty of ±2% (2σ confidence) at these low densities.
Databáze:	OpenAIRE
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