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Advantages & Functional Features
MODULAR CONSTRUCTION
NATIONAL COOLING TOWERS are of vertical induced draft counter flow design.
The tower ideal with regard space economy and cooling efficiency.
F. R. P. BODY
The body of the tower made of tough fibre glass reinforced plastic. It has sufficient structural strength to withstand high industrial vibrations and wind velocity.
It is resistant to local impacts and even if damage is sustained
local repairs can easily be done.
SPECIAL MOTORS (IP 55)
Continuous rating shock-proof totally enclosed type as per IP-55 and
suitable for out door mounting.
FAN
The fan is directly driven and of axial flow type. The fan blades are of
cast aluminum completely free from problem encountered with belt and gear drives.
DRIFT ELIMINATOR
It prevent spray entrainment reduces carryover losses of water.
The eliminator is of rigid P. V. C.
P. V. C. FILL
Corrosion resistant fill are of polyvinyl chloride in honey comb design.
FIXED SPRINKLER WITH SPRAY NOZZLES
Fixed sprinkler with spray nozzles for uniform distribution of water over the fill area. Nozzles are easily removable for cleaning through the inspection window.
INSPECTION WINDOW
Easy operation window is provided to inspect from where water distribution and fil can be observed clearly. Any repairing can be done through the window.
MOST ECONOMICAL
Small H.P. motors are used for the towers to make a great deal of difference in operating cost. aiming to deliver quality product at most economical price.
MAINTENANCE
Considerably reduced because fan is the only moving part of the cooling tower. Fixed distribution system instead of rotating sprinkler which eliminates all bearing and frictional problems.
INSTALLATION,SERVICE AND MAINTENANCE
Towers of lower capacity are completely factory assembled before dispatch. At site the tower has just to be bolted on the RCC/brick masonry foundation, thus saving a lot of installation time. Towers of higher capacity can be easily assembled at site and then installed in a manner similar to small towers. Maintenance is considerably reduced because fan, sprinkler fill and eliminator can be easily be approached from the top without disturbing the cooling tower casing.
Principle of Operation
Warm water from the heat source is pumped to the hot water basins on two sides at the top of the tower. The water is gravity fed from the basins over the 'G' Fill. Simultaneously, air is drawn in through the 'G' Fill on the two open sides of the tower and travels perpendicular to the water flow through the fill. A small portion of the water is evaporated which removes the heat from remaining water. The warm moist air is drawn to the top of the cooling tower by the fan and discharged to the atmosphere. The cooled water drains to the basin at the bottom of the tower and is returned to the heat source.
The vertical air discharge of the GCF design and the distance between the discharge air and fresh air intakes reduces the chance of air re-circulation since the warm humid air is directed up and way from the unit.
Performance & Materials |
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Hot Water Temperature |
32 °C |
Cold Water Temperature |
27 °C |
Ambient Wet-bulb |
23 °C |
Drift Loss (% of flow) |
0.01 |
| Evaporation loss (% of flow) |
0.8 |
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| Casing |
FRP |
| Hot Water Basin |
FRP |
| Cold Water Basin |
FRP |
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Fan Cylinder |
FRP |
| Frame Work |
Hot Dip Galvanized Steel |
| Fan |
FRP / Aluminium |
| Fills |
Rigid Vacuum Formed PVC |
| Louvers |
PVC Mesh |
| Drift Eliminators |
PVC Integral with Fills |
| Nozzles |
Polyproylene |
| Cooling Coil |
Steel |
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