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Industrial & Manufacturing Blog
As is the case with other types of industrial equipment, cooling towers are bound to suffer wear and tear after being in use for extended durations. This often creates the need to carry out maintenance and repair-related activities on the cooling tower.
This article discusses three common problems that affect industrial cooling towers and their solutions for the benefit of business owners looking to undertake DIY maintenance of these cooling systems.
White Rust
White rust on industrial cooling towers takes the form of a white, powder-like surface that often appears on pre-dominantly wet surfaces of a cooling tower. White rust is an especially common problem with cooling towers made from galvanized stainless steel.
The pre-dominantly wet conditions on affected cooling tower surfaces encourage the rapid spread of white rust on the galvanized surface.
Dealing with white rust on cooling towers often involves the use of a stiff-bristled brush to get rid of the powdery rust and the application of protective coatings such as aluminum paint and epoxy-based paints that have high quantities of zinc. In severe cases of white rust, there may be a need to use chemical cleaning solutions alongside the stiff-bristled brush.
Examples of these solutions include Phosphoric and citric acid. Should it come to this, care should be taken not to strip off the galvanic coating on the cooling tower through the over-zealous use of chemical cleaning solutions.
Scaling
Scaling is also a common problem with industrial cooling towers. This problem occurs when the high temperatures within the cooling tower interferes with the solubility of mineral compounds in water being used with the evaporative cooling equipment.
The now insoluble mineral particles are deposited on heat exchange surfaces of the tower. Accumulation of these deposits over time creates a "scale" on the heat exchange surface. The scale reduces the tower's ability to disperse heat, thereby making it less energy efficient.
Scaling on cooling towers can be tamed by the use of mineral stabilizers that prevent the deposition and subsequent accumulation of insoluble minerals on the hearting surface of a cooling tower.
Biological Contamination
Biological contamination of cooling towers refers to the growth of bacteria, algae, and other forms of biological life on cooling tower surfaces. Extensive biological growth on a cooling tower can lead to the formation of a biofilm on the affected surface, which will offer unwanted insulation around the cooling tower.
Application of biocides on affected surfaces of the tower can help to keep biological contamination at bay.
For further assistance, contact local professionals, such as those from Breezewater Pty Ltd.
Share25 January 2016
