Closed Circuit Cooling Tower is used in applications where cooling medium need to be clean and free of contamination. Unlike in open cooling tower various cooling media like soft water, coolant or a mixture of soft water and ethylene glycol can be circulated. The cooling tower comes with various operational advantages: scale formation and fouling inside the heat transfer tubes or surface of the host machine can be reduced and remains always clean thereby providing better cooling throughout and better productivity and lower downtime.
Cooling coils are available in copper (99.9 per cent purity) and SS 304. Temperature range and the environmental conditions influence the selection of the materials of construction of cooling coil.
The casing of the cooling tower is made of Zinc Aluminium Alloy Sheets to provide protection to the internal elements and prevent corrosion. The fan is made of Aluminium alloy and the motor is totally enclosed surface cooled one with along operational life. The spray pump is a centrifugal vertical pump which is attached to the body of the cooling tower.
The control panel is provided as an optional accessory. Temperature and pressure gauges are installed for easy assessing the performance of the cooling tower and the host machine.
In closed circuit cooling tower 99.9% pure copper coils are hailed to be the most efficient cooling coils for counter flow closed circuit cooling towers.
Galvanised Coil Bank
The performance / life optimised galvanised coils are preferred coil banks for huge closed circuit cooling towers. Made from carbon steel pipes, the whole unit is hot dip galvanised after fabrication.
Induced Draught Fans
The induced draught fans are driven by totally enclosed surface cooled motors. Fan is made from Industrial Polymer / die cast aluminium or carbon fibre for noise free performance.
Control Panel incorporates all the controls / switchgear for starting stopping the water spay pumps and induced draught fan. Digital display indicates temperature of the incoming hot water and outgoing cold water.
A low head pump is used for carrying the cooling water from the sump to the top of the cooling coil to be sprayed on the coil bank.