Name:
4746 (RP-1253) - Measurement of Solubility, Viscosity, and Density of R-507A Refrigerant/Lubricant Mixtures PDF
Published Date:
2005
Status:
Active
Publisher:
ASHRAE
The refrigerant vapor/liquid lubricant equilibrium viscosity reduction of two polyolesters (POE), viscosity grades 32 and 68 ISO VG, and one polyalkylene glycol (PAG), viscosity grade 68 ISO VG, were measured with R-507A from –5°C (23°F) to 125°C (257°F) up to 500 psia. All three lubricants have a miscibility curve starting at 2% and in increments up to 60% lubricant and refrigerant concentration determined from -40°C (-40°F) to 60°C (140°F). Using validated analytical methods, the viscosity, density, and composition of the solubilized gas mixture in solution with the lubricant are obtained. This refrigerant has a very small temperature glide, but it is still considered a blend.
Fractionation data were obtained from individual isothermal measurements. The isotherm for each temperature details the composition of the equilibrium of gas fractionation of R- 125 and R143a in the lubricant, mixed vapor pressure, concentration of the total mixed blend (percent by weight) in the lubricant, and viscosity in centipoises (cP) and centistokes (cSt).
Units: Dual
| File Size : | 1 file , 1.4 MB |
| Note : | This product is unavailable in Russia, Belarus |
| Number of Pages : | 10 |
| Product Code(s) : | D-25632 |
| Published : | 2005 |
