Title:
REFRIGERANT COMPOSITIONS AND USE THEREOF IN LOW TEMPERATURE FREEZING SYSTEMS
Document Type and Number:
Japanese Patent JP2015172193
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide refrigerant compositions and methods as a replacement for ozone-depleting refrigerant chlorodifluoromethane (R-22) in a low temperature freezing (cooling) system containing the R-22 refrigerant, the compositions not requiring any significant modification of components or lubricants yet still being able to obtain at least about 90% of operating characteristics of the R-22 composition.SOLUTION: A refrigerant composition contains (a) 28 to 32 wt.% of difluoromethane (HFC-32); (b) 28 to 32 wt.% of pentafluoroethane (HFC-125); and 38 to 42 wt.% of tetrafluoroethane (HFC-134a). The composition comprises a ternary composition in the range shown in figure 4 by the trapezoid.
Inventors:
SPATZ MARK W
Application Number:
JP2015042243A
Publication Date:
October 01, 2015
Filing Date:
March 04, 2015
Export Citation:
Assignee:
HONEYWELL INT INC
International Classes:
C09K5/04; F25B1/00
Domestic Patent References:
| JPH08313120A | 1996-11-29 |
Foreign References:
| WO1995034613A1 | 1995-12-21 |
Attorney, Agent or Firm:
Shinjiro Ono
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Takashi Nakata
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Takashi Nakata
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