In a centrifugal compressor, the refrigerant and the oil systems are separate. The oil is in a separate oil sump and the oil pump powered by a separate motor. On the other hand, the reciprocating compressor is powered by the compressor shaft.
Answer:
Both the reciprocating and centrifugal compressors are the parts of refrigeration and air conditioning technology. The lubrication is provided by the pressure lubrication system in the reciprocating compressor. This system utilizes pressurized oil for lubrication. While, on the other hand, the lubrication is attained by a three-phase fractional horsepower motor and oil pump in case of a centrifugal compressor.
