Heat transfer fluid comprising difluoromethane and carbon...

Details Heat transfer fluid comprising difluoromethane and carbon... Heat transfer fluid comprising difluoromethane and carbon...

2007-07-03

2007-07-03

Webb, Gregory (Department: 1751)

Compositions

Vaporization, or expansion, refrigeration or heat or energy...

C510S407000, C510S412000

Reexamination Certificate

active

10285934

ABSTRACT:
Disclosed are heat transfer fluids which possess a highly desirable and unexpectedly superior combination of properties, and heat transfer systems and methods based on these fluids. The heat transfer fluid comprise from about 30 to about 70 percent, on a molar basis, of carbon dioxide (CO2) and from about 30 to about 70 percent, on a molar basis, of hydrofluorocarbon (HFC), preferably HFC having one to two carbon atoms, and even more preferably difluoromethane (HFC-32). The preferred fluids of the present invention have a vapor pressure of at least about 100 psia at 40° F. and are also preferably not azeotropic.

REFERENCES:
patent: 5340490 (1994-08-01), Decaire et al.
patent: 5736063 (1998-04-01), Richard et al.
patent: 5744052 (1998-04-01), Bivens
patent: 5763063 (1998-06-01), Pass et al.
patent: 5774052 (1998-06-01), Hamm et al.
patent: 5956958 (1999-09-01), Dobak, III et al.
patent: 6113803 (2000-09-01), Richard et al.
patent: 6117356 (2000-09-01), Powell et al.
patent: 41 16 274 (1991-05-01), None
patent: 41 16 274 (1992-11-01), None
patent: EP 1 253 185 (2002-10-01), None
patent: WO 97/07181 (1997-02-01), None
Downing, R.C., “Fluorocarbons Refrigerants Handbook,” Ch. 3, Prentice-Hall (1988).

Affiliated with

Also associated with

Rating

Heat transfer fluid comprising difluoromethane and carbon... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heat transfer fluid comprising difluoromethane and carbon..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat transfer fluid comprising difluoromethane and carbon... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3813552