Miscibility of lubricants with refrigerants. Final report

Miscibility data have been obtained for a variety of non-CFC refrigerants and their potential lubricants. Ten different refrigerants and fourteen (14) lubricants were investigated. Experiments were performed in two phases: Phase 1 focused on performing screening tests for miscibility using refrigerant concentrations of 10, 50 and 95% and Phase 2 consisted of obtained further refrigerant concentrations of 20, 35, 65, 80, and 90%. The complete data set is presented herein. The miscibility tests were performed in a test facility consisting of a series of miniature test cells submerged in a constant temperature bath. The bath temperature can be precisely controlled over a temperature range of {minus}50 C to 90 C ({minus}58 F to 194 F). The test cells are constructed to allow for complete visibility of lubricant-refrigerant mixtures under all test conditions. Each of the refrigerants tested are miscible with at least one of the lubricants, with the exception of R-143a, which exhibits partial miscibility with each of the lubricants.