AWT Technical Reference & Training Manual, Chapter 4: Cooling Water

AWT Technical Reference & Training Manual, Chapter 4: Cooling Water

Developed by the AWT Technical Committee, in conjunction with several consultant members, to assist AWT members in training their employees in the latest water treatment methods. This comprehensive aid provides proper procedures in basic cooling and boiler treatment, as well as a brief introduction to waste water treatment and air washers. Included are specific chapters dealing with boiler water treatment chemical guidelines, basic boiler calculations, phosphate programs, steam and condensate line treatment, field determination of deposits, biocides, open and closed loop systems and much more. <br /><br />Cooling water has been called the life-blood of industry and commerce. Water is used to cool process fluids through heat exchangers; to reduce temperatures of solid products; to cool operating process equipment and machinery; to maintain temperature control in data processing centers; and to provide comfort cooling in commercial buildings, hospitals and a wide variety of other living and working spaces.<br />Large quantities of water are used in industry as a transport medium, for example to carry pulp in paper mills, and crushed or separated ores in the mining industry. While these are not strictly cooling water applications, transport water sometimes requires treatment similar to cooling water treatment to help prevent mineral scaling and corrosion problems.<br />When cooling water flows through a heat exchanger, the process is known as indirect cooling, because the water and the process fluid do not mix. Solid products may be cooled directly by spraying cooling water through nozzles. Direct cooling is common in steel mills and foundries, for example in cooling metal ingots, and in many other applications where cooling water is directed at a solid surface to remove heat. <br />