Gaseous thermal conductivities of fluorinated methyl ethyl ethers
- Kobe Univ. (Japan). Dept. of Chemical Science and Engineering
- Research Inst. of Innovative Technology for the Earth, Tokyo (Japan). Dept. of the New Refrigerant and Other Substances Research
- National Inst. of Materials and Chemical Research, Tsukuba (Japan)
Although a number of hydrofluorocarbons (HFCs) and hydrochlorofluorocarbons (HCFCs) have been developed as possible substitutes for restricted chlorofluorocarbons (CFCs), it is not easy to satisfy both the industrial and environmental requirements. In the case of blowing agents, HFC 245fa and cyclopentane are presently expected to be promising alternatives to the traditional agent CFC 11 (trichlorofluoromethane). Gaseous thermal conductivities of six fluorinated methyl ethyl ethers, which are potential replacements for traditional blowing agents, have been measured by a transient hot-wire method. Temperature and pressure ranges of the measurements are from 303 K to 343 K and up to 0.4 MPa, respectively. The uncertainty of the thermal conductivities obtained is estimated to be within {+-}1%. Simple correlation equations were developed to represent the temperature and pressure dependences on the experimental thermal conductivities. Comparisons of the thermal conductivities between the present fluorinated ethers and those of traditional blowing agents CFC 11 (trichlorofluoromethane) and HCFC 141b (1,1-dichloro-1-fluoroethane) are given.
- OSTI ID:
- 624362
- Journal Information:
- Journal of Chemical and Engineering Data, Journal Name: Journal of Chemical and Engineering Data Journal Issue: 3 Vol. 43; ISSN JCEAAX; ISSN 0021-9568
- Country of Publication:
- United States
- Language:
- English
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