1,1,1,3,3-pentafluorobutane refrigerant compositions comprising fluoroether and uses thereof
AssigneeE. I. Du Pont de Nemours and Company
InventorsBarbara Haviland Minor, Mario J. Nappa, Allen C. Sievert
Life of this patent
Estimating the term…
Abstract
Disclosed herein are 1,1,1,3,3-pentafluorobutane refrigerant or heat transfer fluid compositions further comprising fluoroether, which are useful in refrigerain or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab.single pass heat exchangers.
Claims18
An azeotropic or near-azeotropic composition selected from the group consisting of:
- about 1 to about 99 weight percent 1,1,1,3,3-pentafluorobutane and about 1 to about 99 weight percent 1,1,1,3,3,3-hexafluoro-2-methoxypropane.
An azeotropic composition selected from the group consisting of:
- 84.3 weight percent 1,1,1,3,3-pentafluorobutane and 15.7 weight percent 1,1,1,3,3,3-hexafluoro-2-methoxypropane having a vapor pressure of about 14.7 psia (101 kPa) at a temperature of about 39.6° C.
A process for producing refrigeration, said process comprising evaporating the composition of claim or 14, in the vicinity of a body to be cooled, and thereafter condensing said composition.
A process for producing heat, said process comprising condensing the composition of claim or 14 in the vicinity of a body to be heated, and thereafter evaporating said composition.
A method of using the compositions of claim or 4, for heat transfer, said method comprising transferring said composition from a heat source to a heat sink.
The composition of claim or 14 further comprising at least one ultra-violet fluorescent dye selected from the group consisting of naphthalimides, perylenes, coumarins, anthracenes, phenanthracenes, xanthenes, thioxanthenes, naphthoxanthenes, fluoresceins, derivatives of said dye, and combinations thereof.
Dependencies are inferred from the claim text.