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WT OPERATING PRINCIPLE

OPERATING PRINCIPLE

The purpose of a cooling tower is to extract heat from water on a continuous basis.  To achieve this aim, water is spread in an even film over a large surface area achieved with a modern design of packing.  A draught of air of relatively low humidity is passed over the wetted film in a contra direction.  The water is then cooled by means of:

  1. latent heat of evaporation
  2. conduction of heat to the cold air.

Air is drawn in at the bottom of the tower and passed up through the packing to be discharged via the axial fan.  Water is distributed over the packing where cooling takes place and is collected in the reservoir ready for recirculation.

To achieve this end a cooling tower consists of three main items:

  1. Top Section:  containing axial fan assembly; spray eliminators; water distribution system; inspection cover.
  2. Middle Section:  containing packing; support arrangement.
  3. Sump Section:  containing water sump ball valve; pump suction filter; drain valve; overflow.

Optional Extras:  closed circuit cooling coils; fan silencers; local isolators; pump sets; chemical dosing system; electrical control panels.