This type Air conditioner is large capacity unit so it's called Chiller. There are two types of chiller. One is Air cooled system another is Water cooled system. A liquid chilling system cools water, brine or other secondary coolant for air conditioning or refrigeration purposes. The most frequent liquid chilling application for air conditioning is water chilling, although both brine cooling for low temperature refrigeration and chilling of fluids in industrial Processes are also common. The basic components of a vapour compression liquid chilling system include a compressor, a liquid cooler, a condenser, a compressor drive, a liquid refrigerant or flow control. This type unit suitable for all purpose of commercial spaces.