Cooling towers are an indispensable part of many industrial plants these days. Today there is hardly any major industrial installation that does not utilize cooling water systems. They are a relatively inexpensive way of removing heat from cooling water used for a variety of industrial processes. Theoretically, the process of cooling towers is very simple to understand. The hot water from the heat exchangers is piped back to the cooling tower which cools the water. In other words, the heat is exchanged and the water is cooled. The cooled water is sent back to cool the various industrial processes in the cooling plant.
Presently, there are two different types of cooling tower systems in use. These can be classified as natural draft cooling towers and mechanical draft cooling towers. Due to the immense size of the natural draft cooling towers, these are used only in larger installations such as refineries and power stations globally. However, the mechanical draft cooling towers are smaller as they use electrical fans to force a draft of air through the tower.
The water in such cooling towers falls on the fill surfaces while moving downwards aided by gravity. This helps to increase the contact time between the water and the air, thus maximizing the heat transfer from the water to the air, which is then dispersed through the atmosphere. Many companies in India are now capable of manufacturing world-class cooling towers. These cooling towers companies are now becoming quality conscious and have now obtained ISO certification to become amongst the best cooling tower systems manufacturing companies today.
Many companies also export these cooling tower systems to various countries besides manufacturing them. Due to stringent quality checks, a near zero defect production is achieved. Any defect found is rectified before the product reaches the final stages of manufacturing. Thus, cooling tower systems are now in a position to meet the rigorous demands of various industries. Cooling tower systems first found use in the industrial revolution. Due to the hastening pace of manufacturing during this period, industries faced a practical problem related to disposal of excess heat. Thus, the first cooling tower systems were designed during this period.
The very first cooling towers were originally made of wood. However, the recent advances in cooling tower technology have made it possible to develop a range of cooling towers such as FRP cooling towers and Reinforced cement concrete (RCC) cooling towers as well.