Water Cooling Towers – Saving Our Planet From Carbon Prints
Water cooling towers are the heat rejection plants, which are primarily used to circulate cold water in industrial facilities. The low temperature circulating water absorbs the heat simply by cooling and/or condensing the hot chambers. When this hot water reaches to cooling towers, its much reduced heat is released in to the atmosphere. Fan cylinders help in increasing the efficiency of water cooling towers. The later are commonly used in petroleum refineries, natural gas plants, petrochemical / chemical plants, nuclear power plants and fossil-fuel power plants etc.
Similarly, intake air is treated before being used to reduce the possibility of corrosion in different internal parts.
Fan cylinders in water cooling towers play crucial role in transferring the heat. Fan cylinder is mechanical draft, which uses motor-driven fans to force out or draw air. These are of two types- Induced draft and Forced draft. Induced draft uses a fan at air exit of cooling tower to pull or draw air. It maintains the required velocity of incoming and outgoing air besides eliminating any possibility of recirculation of hot air through air inlet. Forced draft uses fan at air intake to force the air through the tower. Modern age water cooling towers are designed with elevated fan cylinders made of FRP material or HDG Steel.
To intake freshly treated water economically in the desired way as per current requirements, flow control valves are used at various stages. Flow control valves can be either of mechanical controlled or processor controlled. The precision control over the fluid discharge depends upon the quality of valve. Modern age valves come with calibration marks over its body that makes the task of operator easy. These valves are available in cast iron and stainless steel body. Some valves come with SS outer body but internal parts are made of CI.
Water cooling towers are designed according to specific study analytical report of plant. Estimated amount of heat, maximum temperature, process design, type of fuel being used, surrounding atmosphere, safety laws and local environmental rules and regulations are the primary issues that lead the designers and engineers in a particular direction.
