SOME ELECTRICAL OBSERVATIONS OF METALLIC CONTACT BETWEEN LUBRICATED SURFACES UNDER DYNAMIC CONDITIONS OF ROTARY COMPRESSOR

摘要

This thesis describes study of rotary compressor lubrication under dynamic conditions. The degree of lubrication can be determined by metallic contact that consists of measuring the electrical resistance between lubricated surfaces. (Bowden, 1971) The measurements of electrical resistance between inside of roller and eccentricity, outside of roller and nose of blade, lower surface of roller and inside flat wall of sub-bearing, showed very important information on determining the extent to which fluid lubrication is present between these surfaces. Our observations have convinced us that it is impossible to absolutely avoid the metallic contact. This makes it essential that the metallic contact be carefully estimated for effective designing of compressors.