water chillers trane Oil Separator

water chillers trane 

Oil Separator

Oil Separator

Oil Separator:

The oil leaves the compressor entrained within the discharged refrigerant vapor 
The oil is recovered from the discharged refrigerant by an oil separator, which can have an efficiency of greater than 99%. The separator consists of a vertical cylinder surrounding an exit passageway. As the refrigerant-and-oil mixture is discharged into this passageway the oil is forced outward by centrifugal force  collects on the walls of the cylinder, and drains to the bottom. This accumulated oil drains out of the cylinder and collects in the oil sump located near the  bottom of the chiller The oil sump is heated to ensure proper lubrication and minimize refrigerant condensation in the sump

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Oil that collects in the oil sump is at condensing pressure during compressor operation and is, therefore, constantly moving to lower pressure areas of the chiller. In this system, oil flows in 2 distinct paths, each performing a separate function: 1) bearing lubrication and cooling and 2) rotor oil injection Oil leaves the sump and passes through an oil filter and master solenoid valve  The master solenoid valve is used to isolate the sump from the low-pressure side of the system when the compressor is shut down, preventing oil migration The first path is for lubricating and cooling the compressor bearings Œ. Oil is routed to the bearings located in the rotor and bearing housing. Each housing is  vented to the suction side of the compressor so that oil leaving the bearings is routed through the rotors, to the oil separator, and then back to the oil sump The second path is for lubricating and sealing the compressor rotors . Oil is injected along the bottom or top of the compressor rotors inside the housing . Its main purpose is to seal the rotor-to-rotor and rotor-to-housing clearances This seal provides a barrier between the high- and low-pressure cavities of the compressor. Additionally, oil lubricates the male-to-female rotor drive arrangement


 
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