ESK Oil Separators

It is usual for some of the compressor’s oil to be removed and transported to other parts of the system by refrigerant flow. Depending on the operating conditions, a lack of lubricant in the compressor crankcase will occur with serious consequences: Lowly oil pressure, cylinder/piston damage, bearing damage and motor damage. This carry-over of oil into evaporator will adversity affect heat transfer resulting in loss of efficiency and longer running times. ESK oil separators should be specified whenever the following applications are considered:

• Evaporating temp. below –10 °C

• Blast freezers

• Capacity control

• Two stage plants

• Parallel systems

• Cascade plant

• Flooded systems

• Booster

The oil separator effectively removes oil from discharge gas in the strainer elements returns the oil through a high precision float valve to the crankcase or oil control system. The usual separation ratio of approximately 97 % to 99 % of ESK oil separators depends substantially on the operation conditions, the reduction of the gas velocity and the flow path inside the vessel.
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