Refrigeration lubricants

Details Refrigeration lubricants Refrigeration lubricants

1987-10-23

1988-07-05

Wax, Robert

Compositions

Vaporization, or expansion, refrigeration or heat or energy...

With lubricants, or warning, stabilizing or anti-corrosion...

252 52A, 252 67, 62114, C09K 504, C10M10734

Patent

active

047553162

ABSTRACT:
Compression refrigeration equipment using tetrafluoroethane as a working fluid employs polyoxyalkylene glycols which are at least difunctional with respect to hydroxyl groups and a molecular weight between 300 and 2000. The mixtures of the glycols with the refrigerant will be miscible in the range from -40.degree. C. to at least + 20.degree. C.

REFERENCES:
patent: 4248726 (1981-12-01), Uchinuma et al.
patent: 4267064 (1981-05-01), Sasaki et al.
patent: 4428854 (1984-01-01), Enjo et al.
patent: 4431557 (1984-02-01), Shimizu et al.
patent: 4452712 (1984-06-01), Laemmle
patent: 4454052 (1984-06-01), Shoji et al.
1980 Ashrae Systems Handbook, pp. 32.4 and 32.10.
"Fundamentals of Lubrication in Refrigerating Systems and Heat Pumps"; H. H. Kruse and M. Schroeder--Ashrae Transactions, vol. 90, Part 2B, pp. 763-783, 1984.
"Evaluation of Lubricants for Refrigeration and Air-Conditioning Compressors"; H. O. Spauschus, Ashrae Transactions, vol. 90, Part 2B, pp. 784-798.
Research Disclosure 17483, Oct. 1978.
"A Review of Synthetic Oils for Refrigeration Use"; K. S. Sanvordenker and M. W. Larime, Ashrae Symposium, Nassau, Jun. 29, 1972.

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