Miscibility, Solubility, and Viscosity Measurements for R-236EA with Potential Lubricants
Abstract
The report gives results of miscibility, solubility, and viscosity measurements of refrigerant R-236ea with three potential lubricants. The lubricants were a mineral oil, alkylbenzene, and polyol ester, each with a nominal viscosity of 68 cSt. The miscibility tests were performed in a test facility consisting of a series of miniature test cells in a constant-temperature bath. The bath temperature was precisely controlled over a range of -50 to 90 deg C. The test cells are constructed to allow for complete visibility of the refrigerant/lubricant mixtures under all test conditions. Critical solution temperatures obtained from the miscibility data, both solubility and viscosity data were obtained for R-236ea and the most promising lubricant. These data were obtained for a refrigerant concentration range of 0 to 40 wt % refrigerant over a temperature range of 40 to 120 deg C. This range of conditions represents the area of interest necessary for the proper design of compressors. For comparison purposes, data were also taken for the existing U.S. Navy shipboard chiller refrigerant and lubricant concentration, namely R-114 and a naphthenic oil.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1996
- Accession Number
- ADA348922
Entities
People
- M. B. Pate
- S. C. Zoz
Organizations
- Iowa State University