What are two methods of lubrication used in refrigeration compressors?

Two common methods of lubrication used in refrigeration compressors are splash lubrication and forced-feed lubrication. In splash lubrication, oil is splashed from a reservoir onto moving parts, ensuring adequate lubrication through the motion of the compressor components. Forced-feed lubrication, on the other hand, involves a pump that circulates oil under pressure to various parts of the compressor, providing more consistent and efficient lubrication, especially in high-load conditions.