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TRG-TRC010-EN 3
notes
period one
Components
Many of the components of the centrifugal water chiller are similar to those of
other chiller types.
This particular centrifugal water chiller makes use of a shell-and-tube
evaporator where refrigerant absorbs heat from the water flowing through the
tubes. The compressor is made up of 1 or more centrifugal impellers. A second
shell-and-tube heat exchanger serves as the water-cooled condenser, where
refrigerant is condensed inside the shell and water flows inside tubes.
Refrigerant is metered through the system using an expansion device such as a
fixed orifice plate. An economizer can be used to enhance the efficiency of a
chiller with multiple compressor impellers. A control panel is also provided on
the chiller and a starter is either mounted on the chiller or located remotely.
Centrifugal Water Chillers
period one
Figure 5
condenser
condenser
compressor
compressor
control
control
panel
panel
evaporator
evaporator
components of a
Centrifugal Water Chiller
starter
starter
motor
motor
Figure 6
trgtrc010_book.book Page 3 Wednesday, September 1, 1999 10:39 AM