The water in the basin is pumped to the collector pipe, goes through distribution nozzles and sprays to heat-exchange coil pipes. An even water layer is formed around the outer surface of the pipes, cold air enters to the tower body through the air inlet of the tower lateral and flow through water layer outside the coil pipes in opposite directions from the spray water; a part of the spray water evaporates and absorbs heat from the water in coil. The air absorbs the said heat as well as heat transfer by contact, and becomes saturated hot humid air, then discharges to the atmosphere from the top exhaust fan, the rest spray water flows to the collector pipe at low part of tower and is pumped to spraying cycle.
- Improve production efficiency, softened water circulation, no scaling, no blockage and no loss;
- Prolong the service life of equipment, secure equipment reliable and stable operation, reduce failure and prevent accidents.
- Full closed circuit, no impurity enters,no medium evaporation, no pollution.
- Improve the plants’ utilization coefficient, no pool; reduce floor area, save space;
- Small space, convenient to install, move and arrange, compact structure.
- Convenient operation, stable operation, high degree of automation;
- Operation cost savings, variety of automatically switched modes, intelligent control;
- Wide range of uses, medium of no corrosion to the heat exchanger, direct cooling.
- Cooling tower operation and low maintenance cost.
Structure & Components of Square Type Cooling Tower
Evaporative (FRP) Cooling towers are of vertical induced draft counterflow design with uniform water distribution and optimal heat transfer. Towers can be installed independent of wind direction.
FRP CASING :
The F. R. P. cooling tower casing has sufficient strength to adequately withstand Wind velocities up to 60m/sec. (134 mph), earthquakes and vibrations.
FRP BASIN :
The water basin like the tower casing is made of FRP. It is bowl shaped, with a cylindrical auxiliary suction tank at the bottom. This construction eliminates the danger of drawing air into the pump when operating with minimum water in the basin. A drain is provided to facilitate the removal if accumulated dirt from the bottom of the tank. The bowl shape of the water basin facilitates the cleaning of the tower interior.
PVC FILLS :
The fillings are made of PVC.They have excellent heat exchange efficiency & remarkably good chemical resistance.These fills are totally enclosed in the tower, thus excluding them from sunlight and minimizing the growth of algae .A pre-eminent quality and long life fill consists of modular block of PVC honey combs construction to create prolonged contact time of hot air with water for maximum heat transfer.
The performance of cooling tower greatly depends upon the water distribution over the fills. SCSP nozzles distribute water evenly through a wide spray angle without any dry pockets. They are lightweight and reduce the frequency of clogging. The Solid Cone Square Pattern (SCSP) nozzles produce a solid cone spray of water that is distributed in a square pattern onto the fills.
DRIFT ELIMINATOR :
Reduces carry over losses of water. The eliminator is of rigid PVC (Applicable for square type cooling tower). The individual drift eliminators of S-shaped corrugated sheets are bonded with subsequent layers to create the structure. The entire area is thus divided into several fine S shaped mini zones each removing water droplets on the entire surface of the cell.
Specially designed energy efficient fans are of induced-draft axial type with adjustable pitch. Material chosen are non corrosive of plastic, FRP or aluminium alloy. The high efficiency design ensures low running cost and the lowest possible noise level. Fan blade pitch is factory set and dynamically balanced.
The motors are totally enclosed (IP55), flange type, 415 V, 3 ph, 50 Hz, induction weather proof with SS304 extended shaft and are specially designed for cooling tower application.