period one
Types of Water Chillers
notes
Remote Evaporator Barrel
condensingunit
remote evaporator
refrigerant piping
Figure 15
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.
