Standard chillers typically use filtered water and inhibited ethylene glycol and propylene glycol water solutions. However, polyalphaolefin can be used as a coolant as well. Polyalphaolefin (PAO) is a heat transfer fluid used frequently in military and aerospace industries for its dielectric properties and wide range of operating temperatures. When using this fluid, the appropriate wetted materials must be selected. The PAO compatibility option includes a ½ HP centrifugal pump, brass fittings, push lock hose, 5-micron oil filter, anti-siphon system, and internal insulation package. The PAO compatibility option is available only on the RC011, RC022, RC030, and RC045 recirculating chillers.
There are many options available with recirculating chillers. Coolant compatibility and temperature control options are just a few of them. Understanding the options available on a chiller is important in determining how a chiller will meet your application's specific liquid cooling needs.
Check out our Recirculating Chiller Section for more information about their wetted materials or contact our Engineering Team to help determine material compatibility in your liquid cooling system.