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12 TRG-TRC016-EN
notes
period one
Types of Water Chillers
An alternative to the packaged air-cooled chiller is to use a packaged
condensing unit (condenser and compressor) located outdoors, with a remote
evaporator barrel located in the indoor equipment room. The two components
are connected with field-installed refrigerant piping. This configuration locates
the part of the system that is susceptible to freezing (evaporator) indoors and
the noise-generating components (compressors and condenser fans) outdoors.
This usually eliminates any requirement to protect the chilled-water loop from
freezing during cold weather.
This configuration is particularly popular in schools and other institutional
applications, primarily due to reduced seasonal maintenance for freeze
protection. A drawback of splitting the components is the requirement for
field-installed refrigerant piping. The possibility of system contamination
and leaks increases when field-installed piping and brazing are required.
Additionally, longer design time is generally required for the proper selection,
sizing, and installation of this split system.
Remote Evaporator Barrel
condensing unit
condensing unit
remote
evaporator
refrigerant
piping
Figure 15