Fluorinated ketone and fluorinated ethers as working fluids for thermal energy conversion
申请人:Zyhowski J. Gary
公开号:US20050188697A1
公开(公告)日:2005-09-01
Polyfluorinated ethers and polyfluorinated ketones and mixtures thereof, preferably polyfluorinated ethers such as methyl(trifluoroethyl)ether (CH
3
OCH
2
CF
3
), methyl(heptafluoropropyl)ether (CH
3
OCF
2
CHFCF
3
), di(trifluoroethyl)ether (CF
3
CH
2
OCH
2
CF
3
), methyl(hexafluoropropyl)ether (CH
3
OCF
2
CF
2
CHF
2
), methyl(pentafluoropropyl)ether (CH
3
OCH
2
CF
2
CF
3
), methyl (perfluorobutyl)ether (C
4
F
9
OCH
3
), ethyl(perfluorobutyl)ether (C
4
F
9
OC
2
H
5
), and polyfluorinated ketones such as methyl(perfluoromethyl)ketone (CF
3
COCH
3
), perfluoromethyl(trifluoroethyl)ketone (CF
3
CH
2
COCF
3
), methyl(perfluooroethyl)ketone (C
2
F
5
COCH
3
), methyl(perfluoropropyl)ketone (F
3
CF
2
CF
2
COCH
3
), perfluoroethyl(perfluoropropyl)ketone (CF
3
CF
2
CF
2
COC
2
F
5
), methyl(octafluorobutyl)ketone (C
2
F
5
CFHCF
2
COCH
3
), di(perfluoropropyl)ketone (CF
3
CF
2
CF
2
COCF
2
CF
2
CF
3
), and mixtures thereof meet the requirement for not adversely affect atmospheric chemistry and would be a negligible contributor to ozone depletion and to green-house global warming in comparison to the fully halogenated hydrocarbons and are suitable for use as working fluids for u se i n thermal energy conversion systems such as an organic Rankine cycle system.