Accession Number:

ADA371241

Title:

Miscibility, Solubility, Viscosity, and Density Measurements for R-236ea with Four Different Exxon Lubricants

Descriptive Note:

Final technical rept. Mar 95-Mar 97

Corporate Author:

IOWA STATE UNIV AMES DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

1999-06-01

Pagination or Media Count:

83.0

Abstract:

The report discusses miscibility, solubility, viscosity, and density data for the refrigerant hydrofluorocarbon HFC-236ea or R-236ea and four lubricants supplied by Exxon Corporation. Such data are needed to determine the suitability of refrigerantlubricant combinations for use in refrigeration systems. The miscibility tests were performed in a test facility consisting of a series of miniature test cells submerged in a constant temperature bath, precisely controlled over a range of -50 to 90 deg C. The test cells were constructed to allow for complete visibility of refrigerantlubricant mixtures under all test conditions. Critical solution temperatures obtained from the miscibility data are presented for each refrigerantlubricant combination. Data for the R-236ea in each of the test lubricants have been collected for refrigerant concentrations of 10-90. The raw data have been presented, and the results have been summarized. Two of the oils Exxon-03 and 04 were found to be completely miscible over the temperature and concentration ranges tested, while the other two Exxon-01 and 02 were found to be immiscible over most of the temperature range tested. Solubility, viscosity, and density data were also obtained for R-236ea mixed with the same four oils for a refrigerant concentration range of 0-40 wt refrigerant over a temperature range of 30-100 deg C.

Subject Categories:

  • Lubricants and Hydraulic Fluids
  • Environmental Health and Safety

Distribution Statement:

APPROVED FOR PUBLIC RELEASE