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(Chiller Water System, Direct Expansion (DX) – WATER COOLED, Indirect…

- - - - •Capacity from 720,000 Btu/Hr to 1,800,000 Btu/Hr. •Cooling water absorb heat at condenser and release at cooling tower.
    - - •Capacity from 1,800,000 Btu/Hr to 6,000,000 Btu/Hr. •Cooling water absorb heat at condenser and release at cooling tower.
    - - •Capacity from 6,000,000 Btu/Hr to 24,000,000 Btu/Hr. •Cooling water absorb heat at condenser and release at cooling tower.
  - - - •Capacity from 18,000 Btu/Hr to 138,000 Btu/Hr. •Air blow down heat absorbed by refrigerant at the condenser.
    - - •Capacity from 1,500,000 Btu/Hr to 6,000,000 Btu/Hr. •Air blow down heat absorbed by refrigerant at the condenser.
  - - - 2.Chilled water is then pumped in pipes (CHWS) from the chiller to indoor units such as AHU, FCU and others.
        
        3.Chilled water coils filled with circulating chilled water, while the air forces to pass thru the coil and produce the cool air.
        
        4.Heat absorbed from the room flows out with the (now warmer) chilled water (CHWR) exiting the cooling coils and returning to the chiller plant.
        
        5.At the chiller, heat removed from the returning chilled water is rejected to the condenser via the refrigeration cycle.
        
        6.The condenser can be air or water cooled.