Title:
REFRIGERANT FOR LOW TEMPERATURE APPLICATIONS
Document Type and Number:
WIPO Patent Application WO2006071965
Kind Code:
A3
Abstract:
An apparatus and method wherein potential ozone layer-damaging chlorodifluoromethane (Refrigerant R-22) is substituted with a mix of less environmentally damaging refrigerants pentafluoroethane and tetrafluoroethane in chlorodifluoromethane-based air-cooling systems for low temperature applications. While less environmentally damaging than chlorodifluoromethane, the substitute refrigerant has a temperature-pressure relationship similar to that of chlorodifluoromethane, making the substitute refrigerant suitable for use with chlorodifluoromethane-based low temperature systems. In this event, it is mixed with a relatively small percentage of a lubricating oil which is compatible with both the unit refrigerant and typical R-22 system design.
Inventors:
PONDER KENNETH M (US)
THOMAS STEFFAN JR (US)
THOMAS STEFFAN JR (US)
Application Number:
PCT/US2005/047367
Publication Date:
December 21, 2006
Filing Date:
December 28, 2005
Export Citation:
Assignee:
STEFKO PROPERTIES LLC (US)
PONDER KENNETH M (US)
THOMAS STEFFAN JR (US)
PONDER KENNETH M (US)
THOMAS STEFFAN JR (US)
International Classes:
C09K5/04
Domestic Patent References:
| WO2001023493A1 | 2001-04-05 |
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