Many larger refrigeration and air conditioning compressors — usually over 5 horsepower — have forced oiling systems. These compressors contain an oil pump located at the end of the compressor’s ...

Refrigerant migration is defined as refrigerant, either liquid or vapor, traveling to the compressor’s suction line or crankcase during the compressor’s off cycle. During the off cycle, or especially ...

Supermarket refrigeration systems, rooftop chillers, walk-in fast-food-restaurant freezers, and refrigerated rail cars vary greatly in size and appearance. Yet they all share the same basic principles ...

Recent advances in the study of refrigerant and lubricant oil solubility have significantly enhanced our understanding of the interactions between low molecular weight refrigerant molecules and the ...