Air forced into the tower in mechanical draft cooling towers by u

SOLUTION

● Cooling towers are often found in commercial and industrial sites, helping to keep components cool and to allow the HVAC system to do its job with less stress and strain.

● The principal function of a cooling tower is to remove heat from the water discharged from the condenser so that the water can be discharged to the environment or recirculated and reused.

● Cooling towers are used in conjunction only with water-cooled chillers and vary in size from small rooftop units to very large hyperboloid structures.

● Cooling towers are also characterized by the means by which air is moved.

● Mechanical draft cooling towers are the most widely used in buildings and rely on power-driven fans to draw or force the air through the tower. They are normally located outside the building.

● The two most common types of mechanical draft towers to the HVAC industry are induced draft and forced draft.

● Induced draft towers have a large propeller fan at the top of the tower (discharge end) to draw air upward through the tower while warm condenser water spills down. This type requires much smaller fan motors for the same capacity than forced draft towers.

● Forced draft towers utilize a propeller fan at the bottom or side of the structure. Air is forced through the water spill area and discharged out the top of the structure.

● After the water has been cooled in the cooling tower, it is pumped to a heat exchanger or condenser in the refrigeration unit where it picks up heat again and is returned to the tower.