Home Blog Comments Download Newsletter Video's
EVAPORATE COOLING TOWERS

cooling towers

Evaporate cooling systems are designed to dissipate heat, using water as a heat exchange medium, from industrial processes and air conditioning systems. Such systems can provide an enviroment for growth of many micro-organisms, including Legionella Bacteria. A correctly designed water treatment program should be designed to minimise the risks associated with the following:

cooling towers

MICROBIOLOGICAL ACTIVITY:

♦   The operating conditions of a cooling system provide an environment in which micro-organisms can proliferate. The water tempratures, PH conditions, concentration of nutrients, pressence of dissolved oxygen, carbon dioxide, sunlight, together with large surface areas all favour the growth of micro-organisms such as protozoa, algae, fungi and bacteria, including Legionella Bacteria. Biocides can be oxidising or non-oxidising.

cooling towers

SCALE:

♦   Scale formation results in loss of heat transfer, reduced flow rates, loss of deposits. The scale protects the bacteria and so reduces the effectiveness of biocidal treatment. In systems which contain scale, or have had a history of scaling problems, chemical analysis of the scale will ensure that the most effective treatment programme is selected.

cooling towers

FOULING:

♦   Fouling is a general term for any solid matter contaminating the system. This is usually scale or corrosion products but can also be left over from inadequete pre commission cleaning. Fouling should be reduced to prevent blockages, further corrosion or failure of system components.

cooling towers

CORROSION:

♦   The entire system will be prone to corrosion and can be controlled by the correct usage of inhibitors. The selection of inhibitor will depend on the various system conditions, including the type of system and its operation, construction materials, operating tempratures and make up water quality.

cooling towers

The composition of the make-up and and cooling water should be routinely monitored to ensure the continued effectiveness of the treatment programme. The frequency and extent will depend on the operating characteristics of the system, the minimum recommended frequency being once a week to ensure that the dosage and blend rates are correct. The monitoring visits should either be carried out by trained staff on site or by an independant water treatment company. Aquavent have a number of competant experienced and trained staff available to carry out monthly or weekly visits as desired by site management.

cooling towers

Please dont hesitate to contact our office regarding any of the above
Tel: 01252 837778 or
Email: info@aquavent.eu

« BACK