What type of oil is recommended for use in a vapor-cycle cooling system?

The use of special high-grade refrigeration oil is essential in a vapor-cycle cooling system due to its specific properties that enhance system performance and longevity. This type of oil is formulated to operate effectively at the low temperatures and pressures typical of refrigeration cycles. Additionally, high-grade refrigeration oils are designed to have excellent thermal stability, compatibility with refrigerants, and the ability to minimize wear and corrosion within the system components.

Standard automotive oil, mineral oil, or vegetable oil do not possess these specialized characteristics, making them unsuitable for the unique demands of a vapor-cycle cooling system. Using oils not designed for refrigeration applications could lead to reduced efficiency, increased system wear, and potential failure. Hence, the recommendation for special high-grade refrigeration oil ensures optimal functionality and reliability in cooling systems.