Αποτελέσματα Αναζήτησης
cooling water treatments . Water velocity—the flow rate of cooling water is a critical factor, particularly in areas of low velocity such as in shell-side heat exchangers, where debris can settle out and provide favorable conditions for microbial activity . Biocide treatment—The application of biocides,
Cooling systems require protection from corrosion, scaling, and microbiological fouling to maximize performance, preserve equipment life and reliability, and most importantly, help ensure employee safety. In this chapter, we examine fundamental cooling system design and heat transfer basics.
Under no circumstances should boilers be fired before the system water has been treated. If an installation is not flushed and/or if the system water is not of the right quality, it may invalidate the manufacturer’s warranty. Due to the presence of dissimilar metals in heating systems and to avoid problems with the heating
Future Considerations. Monitoring and Control of Cooling Water Equipment. An open recirculating cooling system uses the same water repeatedly to cool process equipment. Heat absorbed from the process must be dissipated to allow reuse of the water. Cooling towers, spray ponds, and evaporative condensers are used for this purpose.
Pretreatment of cooling water systems is necessary to maximize the service life of heat exchange equipment. Usually, pretreatment consists of two phases: precleaning, to remove the accumulation of foreign matter. prefilming, to promote the rapid formation of an inhibiting film.
OBJECTIVES OF COOLING WATER TREATMENT. MICROBIOLOGICAL DEPOSITS AND CONTROL. CORROSION IN COOLING SYSTEMS. DEVELOPING AN EFFECTIVE COOLING WATER TREATMENT PROGRAM. COOLING WATER SYSTEM START-UP AND LAYUP REQUIREMENTS.
In this chapter, we examine cooling water chemistry and treatment programs to maintain reliability throughout the cooling water network. Cooling systems require protection from corrosion, scaling, and biofouling (or microbiological fouling) to maximize performance.
