R- Closed Loop Chillers
Self-Contained Recirculating Chillers
Closed-Loop chillers recirculate coolant from a tank mounted on board the chiller, through a sealed coolant loop and heat source (process) and back to the tank. The tank, pump, and evaporator are all on board the chiller.
RO- Open Loop Chillers
Recirculate Fluid from a Remote Tank
Open-Loop chillers recirculate fluid from a remote tank, through the chiller and back to the tank. The chiller works to maintain a constant fluid temperature in the tank. The pump and evaporator are on board the chiller. The tank is remote.