Air conditioner and heat pump with tetra fluoroethane-containing working fluid
US5438849A · kind A · utility
13Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1994 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Sep 15, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2205/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An air conditioner or heat pump containing a working fluid comprising tetrafluoroethane and at least two fluorinated hydrocarbons having a boiling point of not higher than -40.degree. C. under atmospheric pressure selected from the group consisting of methane derivatives and ethane derivatives which consist of one or two carbon atoms, hydrogen atoms and fluorine atoms, which has very small influence on the ozone layer in the stratosphere and is suitable as a substitute working fluid for chlorodifluoromethane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.