BENCH TOP COOLING TOWER TRAINER
Cooling Tower Trainer has been designed to meet the demand for a compact cooling tower
which clearly demonstrates all the processes found in a full size forced draft cooling tower
and behaves in a representative manner.
Warm water is pumped from the load tank (condenser simulation tank) through the control
valve and water flow meter to the column cap. After its temperature is measured, the water is
simultaneously distributed over the top packing deck and as it spreads over the plates, a large
thin film of water is exposed to the air stream. During it is downward passage through the
packing, the water is cooled, largely by the evaporation of a small portion of the total flow.
The cooled water falls from the lowest packing deck into the basin from which it flows past at
the thermometer and into the load tank where it is re-heated for re-circulation.
Due to evaporation, the level of the water in the load tank tends to fall. This causes the float
operated needle valve to open and transfer water from the make up tank into the load tank.
Under steady conditions, the rate at which the water leaves the make-up tank is equal to the
rate of evaporation plus any small airborne droplets in the air discharge.
Air from the atmosphere, pre-heated if desired, enters the fan at a rate which is controlled by
the intake damper setting. The fan discharges into the distribution chamber and the air passes
wet and dry bulb thermometers before it enters the packed column. As the air stream flows
through the packing, its moisture content increases and the water is cooled. The air is then
discharged to the atmosphere via the air measuring orifice and further wet and dry bulb
thermometers. All of the foregoing may be observed through the transparent structure.