Chemical and thermal stability of refrigerant-lubricant mixture with metal. Materials compatibility and lubricants research on CFC-refrigerant substitutes [electronic resource] : Quarterly report, 1 February 1992--31 March 1992

Published:: Washington, D.C. : United States. Dept. of Energy. Office of Fissile Materials Disposition, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 28 pages : digital, PDF file
Additional Creators:: United States. Department of Energy. Office of Fissile Materials Disposition and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

This report presents completed sealed tube stability test results for the R-123/mineral oil mixture and preliminary results for seven of the eighteen contracted refrigerant-lubricant mixtures. The R-123 mixture was tested at 105, 150, and 175°C. The results obtained indicate that prolonged exposure to temperatures of about 150°C and higher will lead to rapid chemical deterioration of the R-123/mineral oil system. Chlorotrifluoroethane (R-133a) and trifluoroethane (R-143a) have been identified as decomposition products of R-123. Testing at 150 and 175°C have been completed for the HCFC refrigerants R-22, R-124, and R-142b with either mineral oil or alkylbenzene lubricants. These mixtures were very stable at the indicated temperatures. Testing at a higher temperature level will be necessary to define their upper temperature limits. Similarily, partial test results are available for HFC refrigerants R-32, R-125, R-134a (two esters), and R-143a with pentaerythritol ester lubricants at the 150 and 175°C temperature levels. Again, all five mixtures were found to be extremely stable at the test temperatures and additional testing will be needed to establish their upper temperature limits.

Report Numbers:

E 1.99:doe/ce/23810--2b
doe/ce/23810--2b

Subject(s):

Other Subject(s):

Note:

Published through SciTech Connect.
03/31/1992.
"doe/ce/23810--2b"
"DE92015117"
Huttenlocher, D.F.
Air-Conditioning and Refrigeration Technology Inst., Inc., Arlington, VA (United States)
Spauschus Associates, Inc., Atlanta, GA (United States)

Type of Report and Period Covered Note:

Quarterly; 01/01/1992 - 03/31/1992

Funding Information:

FG02-91CE23810

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