What is a Cooling Tower?

Example of 2xBAC Cooling Towers above

A Cooling Tower is a heat rejection device, which extracts waste heat to the atmosphere though the cooling of a water stream to a lower temperature. The type of heat rejection in a cooling tower is termed “evaporative” in that it allows a small portion of the water being cooled to evaporate into a moving air stream to provide significant cooling to the rest of that water stream. The heat from the water stream transferred to the air stream raises the air’s temperature and its relative humidity to 100%, and this air is discharged to the atmosphere. Evaporative heat rejection devices such as cooling towers are commonly used to provide significantly lower water temperatures than achievable with “air cooled” or “dry” heat rejection devices, like the radiator in a car, thereby achieving more cost-effective and energy efficient operation of systems in need of cooling. Think of the times you’ve seen something hot be rapidly cooled by putting water on it, which evaporates, cooling rapidly, such as an overheated car radiator. The cooling potential of a wet surface is much better than a dry one.

Why do Cooling Towers require internal surface reline, relining & refurbishment works?

The internal surfaces of a cooling tower over time will start to deteriorate due to general operational use, or in this particular example below the internal surfaces could be damaged due to excessive volumes of chemical dosing by a previous poor quality Water Treatment Service Provider.

The above picture identifies high levels of scale build up on the internal surface.

The high level of solids within the Cooling Tower water had started to abrade certain areas of the internal surfaces and in places fully remove the existing coating back to the steel surface itself as clearly identified above and has resulted in corrosion and surface damage 

This picture above identifies the Cooling Tower packing which has started to collapse. Cooling Tower packing is a vital part of the control of water droplets entering the atmosphere outside the cooling tower.

The above picture identifies the result of the high level chemical dosing which has resulted in Cooling Tower starting to “leak water” through the sectional joints.

The above picture identifies the Cooling Tower removed from service and the packing removed & ready for the preparation works to commence.

The above identifies a Tank Reline engineer carrying out preparation works with our specialist mechanical power tools.

The above pictures above identify the Cooling Tower internal surfaces fully prepared and ready for the first stage of the strip coat application process.

All joints, sharp edges & corners are fully coated before the first full coat application.

The pictures below identifies the Cooling Tower fully refurbished and relined before been put back into full operational service

If you have any concerns about your Cooling Tower or would like to discuss a Cooling Tower Reline please feel free to contact a member of our team at today on Tel:01704 335801.

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Tank Reline are certified members of the LCA, which means our management systems are specially designed to assist our clients in controlling their Legionella risk. We are also accredited to the highest standards for Health & Safety, Quality & Environment. See below for a selection of the organisations with whom our company and staff are certified.

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