Question
Download Solution PDFWhich of the following is NOT a function of lubricating oils used in refrigerants?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Lubricating Oils in Refrigeration Systems:
- Lubricating oils play a crucial role in the efficient operation of refrigeration systems.
- They are primarily used to minimize friction between moving parts, which reduces wear and tear, and extends the life of the components.
- They also help in sealing the gas between the suction and discharge ports, ensuring that the refrigerant does not leak and the system operates efficiently.
- Additionally, lubricating oils aid in transferring heat from the crank-case to the compressor, which helps in maintaining the temperature balance within the system.
Important Points
Lubricating oils do not directly decrease the coolant temperature or increase the Coefficient of Performance (COP) of the refrigeration system. These functions are primarily achieved through the refrigerant and the system's design and operation.
Additional Information
Other roles of lubricating oils in refrigeration systems include:
- Corrosion Protection: Lubricating oils provide a protective layer on metal surfaces, preventing corrosion and rust.
- Noise Reduction: By reducing friction, lubricating oils help in minimizing noise generated by moving parts within the system.
- Compatibility: It is essential to ensure that the lubricating oil is compatible with the refrigerant used in the system to avoid chemical reactions that could affect the system's performance.
Last updated on May 28, 2025
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