Claims
- 1. A process for cooling a body comprising the steps of condensing a mixture consisting essentially of a substantially constant boiling composition consisting of about 55-90 weight percent pentafluoroethane and about 45-10 weight percent difluoromethane, wherein the pressure at the dew point and bubble point differ by less than about 1.5% at a vapor pressure of about 210 to about 240 at 25.degree. C.; and thereafter, evaporating said mixture in the vicinity of the body to be cooled.
- 2. A process for heating a body comprising the steps of condensing a mixture in the vicinity of the body to be heated, said mixture consisting essentially of a substantially constant boiling composition consisting of about 55-90 weight percent pentafluoroethane and about 45-10 weigh percent difluoromethane, wherein the pressure at the dew point and bubble point differ by less than about 1.5% at a vapor pressure of about 210 to about 240 psia at 25 degrees C.; and thereafter, evaporating said mixture.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of U.S. application Ser. No. 07/907,992, filed Jul. 2, 1992, which was a continuation-in-part of U.S. application Ser. No. 07/659,210, filed Feb. 22, 1991, now a abandoned, which was a continuation-in-part of U.S. application Ser. No. 07/628,000, filed Dec. 17, 1990, now abandoned.
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Number |
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Kind |
4174295 |
Bargigia et al. |
Nov 1379 |
|
4978467 |
Shankland et al. |
Dec 1990 |
|
5185094 |
Shiflett |
Feb 1993 |
|
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Number |
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Country |
64-79288 |
Mar 1989 |
JPX |
1-108291 |
Apr 1989 |
JPX |
Non-Patent Literature Citations (5)
Entry |
McLinden & Didion's article "Quest For Alternatives" (Ashrae Journal, Dec. '87). |
Vinyard, Sand & Statt's article "Selection of Ozone-Safe, Nonazeotropic Refrigerant Mixtures for Capacity Modulation in Residential Heat Pumps" (Ashraie Transactions 1989, vol. 95, Part 1). |
Extract fr. OakRidge Nat. Lab. "Environmental, Health, and CFC Substitution Aspects of the Ozone Depletion Issue", Apr. 1989. |
Article "Beyond CFCs: Extending the search for new refrigerants": (presented at Sep. 1989) Ashrae CFC Technology Conf., Gaithersburg, Md. |
Research Disclosure #14623, vol. 146, Jun. 1976. |
Continuation in Parts (3)
|
Number |
Date |
Country |
Parent |
907992 |
Jul 1992 |
|
Parent |
659210 |
Feb 1991 |
|
Parent |
628000 |
Dec 1990 |
|