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8 TRG-TRC016-EN
notes
period one
Types of Water Chillers
Air-cooled chillers are often selected for use in systems that require year-round
cooling requirements that cannot be met with an airside economizer. Air-cooled
condensers have the ability to operate in below-freezing weather, and can do so
without the problems associated with operating the cooling tower in these
conditions. Cooling towers may require special control sequences, basin
heaters, or even an indoor sump for safe operation in freezing weather.
For process applications, such as computer centers that require cooling year-
round, this ability alone often dictates the use of air-cooled chillers.
air-cooled or water-cooled
Low Ambient Operation
air
air
-
-
cooled
cooled
chiller
chiller
Figure 11