The choice of the oil/refrigerant combination is crucial for the proper operation of installations
A refrigeration compressor must in most cases be lubricated. Proper operation and optimum performance are ensured by choosing fluids and oils that are compatible with the equipments and the desired operating conditions.
The refrigerating circuit is subject to pressure, temperature and expansion phenomena which require perfect compatibility between oil and refrigerant.
Role of the lubricant in a refrigerating circuit, 3 main functions:
- Lubrication of moving parts,
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- Leak tightness,
- Motor fluid for some control and cooling devices in the case of screw compressors for example.