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8 TRG-TRC012-EN
notes
period one
Components
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.
Oil that collects in the oil sump is at condensing pressure during compressor
Oil Separator
refrigerant vapor
refrigerant vapor
and oil mixture
and oil mixture
oil return to sump
oil return to sump
refrigerant vapor
refrigerant vapor
to condenser
to condenser
Figure 15
Oil Supply System
master
master
solenoid
solenoid
valve
valve
oil tank
oil tank
sump
sump
oil filter
oil filter
oil
oil
separator
separator
rotor bearings
rotor bearings
rotor
rotor
refrigerant
refrigerant
vapor to
vapor to
condenser
condenser
compressor
compressor
1
1
2
2
Figure 16