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TRG-TRC010-EN 7
period one
Components
notes
the accelerated refrigerant vapor leaves the last impeller, it collects in the
compressor volute and travels on to the condenser.
Condenser
The high-pressure refrigerant vapor is discharged from the compressor into a
heat exchanger that acts as a condenser.
In a water-cooled condenser, water is pumped through the tubes of the shell-
and-tube heat exchanger while refrigerant vapor fills the shell space
surrounding the tube bundle. A baffle inside the condenser helps distribute the
refrigerant evenly. As heat transfers from the hot, high-pressure refrigerant
vapor to the water, refrigerant condenses on the tube surfaces.
Cooling water flows first through the lower tubes and then through the upper
tubes. This produces a nearly constant temperature difference between the
downward-moving refrigerant and the tube surfaces, resulting in a uniform
heat transfer rate within the tube bundle.
Condensed liquid refrigerant collects in the bottom of the shell and flows
through the liquid line to the expansion devices and economizer.
Condenser
baffle
baffle
tube
tube
bundle
bundle
liquid
liquid
refrigerant
refrigerant
refrigerant vapor
refrigerant vapor
cooling
cooling
tower
tower
water
water
Figure 12
trgtrc010_book.book Page 7 Wednesday, September 1, 1999 10:39 AM