Scribd is the worlds largest social reading and publishing site. Why is microbiological growth in cooling towers hard to control. View and download powerpoint presentations on cooling tower ppt. Xls section 11 cooling towers xlsx sakthikumaran m. Best management practice and guidance manual for cooling.
Operation of cooling tower counterflow design 5 counterflow design. Again, this will be a first issue releasing the actual engineering approach. Here we explain in full detail how does a cooling tower work, cooling tower working principles with example text, pictures and diagrams. If you continue browsing the site, you agree to the use of cookies on this website. Chapter 8 cooling towers system shutdown and start. A free powerpoint ppt presentation displayed as a flash slide show on id. The second law of thermodynamics tells us that not all of the heat can be converted to electricity thermodynamic efficiency cannot be 100%. Cooling tower systems work by using water to extract waste heat from a system and ejecting it into the atmosphere primarily through evaporation. Cooling towers can be among the largest water using systems in industrial.
This water is often discharged to the sanitary sewer system. For nearly a century, we have provided exceptional quality equipment and service to the hvac, process cooling, industrial, and. If you read this book carefully, you can make any cooling tower design programs by yourself. Preventive maintenance program and plan for cooling towers. In this article explained about basic concepts of cooling tower, types of cooling towers, formula for cooling tower efficiency. Cooling tower operation and maintenance for improved energy efficiency. As a result, the remainder of the water is cooled down significantly. A presentation on cooling tower renovation work slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Introduction a nuclear power plant generates energy in the form of heat which is converted to electricity.
Skyscrapers, hospitals, office buildings, power stations, oil and gas plants, refineries, all need cooling towers. Cooling tower cooling towers are heat removal devices used to transfer process waste heat to the atmosphere. As this occurs, a small volume of water is evaporated, reducing the temperature of the water being circulated through the tower. They reject process heat from the cooling water to atmosphere and keep the water cool. Cooling tower seminar presentation for final year project free download as powerpoint presentation. A cooling tower is a heat rejection device that extracts waste heat to the atmosphere by cooling a stream of hot water in the tower.
Cooling tower plays a major role in chemical process industry. Keeping your cooling tower running smooth and in good shape requires more than just the annual inspection before startup. The basics of cooling tower water treatment the purpose of a cooling tower is to remove the heat generated by an hvac system cooling of compressor refrigerant and heat generated by the compressor itself. Suptic air conditioning and refrigeration systems ranging from light commercial to industrial applications may rely on cooling towers to remove waste. A cooling tower uses evaporation to lower the temperature of water that conveys heat. Cooling towers are a common site at many industrial plants, commercial buildings and public buildings. Cooling towers are a very important part of many chemical plants. Sarah ferrari, revised 3142016, 2016 power point presentation as pdf. The purpose of a cooling tower is to keep a process from raising temperatures too high were they either can be dangerous or lower the efficiency. Following the recent legionnaires disease outbreaks, there is a great deal of concern and uncertainty about what is required for proper cooling tower maintenance.
Water treatment for cooling towers 1 of 2 water treatment helps ensure that heattransfer surfaces perform to design specifications by amanda meitz, senior microbiologist, nalco diversified technologies, inc. Find powerpoint presentations and slides using the power of, find free presentations research about cooling tower. Training session on energy equipment cooling towers presentation from the. A very important concept for understanding cooling tower heat transfer is that of wet bulb temperature, which is the lowest temperature that can be achieved by evaporative cooling. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext.
Induceddraft cooling towers most common type large propeller fan located on top of unit discharging upward air is drawn into the intakes on the sides of the unit and passes through a stream of water some water evaporates into the airstream causing cooling. This manual is not intended to be allencompassing and thoroughly definitive. As the universal solvent, water is capable of dissolving a variety of materials as well as holding. The term induced draft denotes that air is drawn by fans through the flow of falling water and up and out of the cooling tower. With respect to cooling, no longer are plants being built with oncethrough cooling systems but rather the choice is either a cooling tower or aircooled condenser. A cooling tower is an equipment used to reduce the temperature of a water stream by extracting heat from water and emitting it to the atmosphere. Water first passes through a heat exchanger where it absorbs heat. A cooling tower is a specialized heat exchanger in which air and water are brought into direct contact with each other in order to reduce the waters temperature. Cooling towers and cooling tower parts spx cooling. Cooling tower operation forced draught cooling towers use the evaporation of a liquid often water into air to achieve cooling. Cooling tower seminar presentation for final year project hvac. Cooling tower efficiency calculations cooling tower efficiency calculation is described in this article. Cooling tower basics calculation formulas cooling tower.
Dutchess community college cooling tower maintenance program and plan april 1, 2016 3 general. Pressure required at cooling tower supply piping connections. Dry cool air enters the bottom of tower, moves thru fill where it accepts heat energy from the hot water and moves out the top of the stack as warm, moist air. The water consumption rate of a cooling tower system is only about 5% of that of a oncethrough system, making it the least expensive system to.
Cooling towers make use of evaporation whereby some of the water is evaporated into a moving air stream and subsequently discharged into the atmosphere. Cooling tower bureau of energy efficiency 5 syllabus cooling tower. Contents overview section 1 evaporative cooling towers. Today we are going to talk about how you can choose the right cooling tower system for areas with tropical climates. Which cooling tower is best for tropical climates the climate conditions can somehow affect the performance of cooling towers due mainly to the fact that they make use of the surrounding air as well as water supply to do their job.
Cm4120 spring 2008 topics introduction definitions operating conditions basic components water cooling systems types introduction boxed shaped collection of. The fundamentals of water treatment technology a training workshop for stasmo presented by. Irrespective of what engineering industry you work in, knowing a bit about cooling towers will always serve you well. Cooling tower efficiency calculations cooling tower approach. The following cooling towers are present on dutchess community college campus. Cooling tower basics and common misconceptions introduction in comparison with most other industrial equipments, the water cooling tower is a simple device, based on the direct contact of two of the earths most common substances. Electrical equipment cooling towers this powerpoint training. In june 2000, the government, with the support of emsd and other bureauxdepartments, launched a scheme for wider use of fresh water in cooling towers for energy efficient air conditioning systems fwct scheme for nondomestic buildings. The major concern during i study the cooling tower theory was how to computerize the cooling tower theory from the calculation of ntu to the cooling tower performance analysis. A guide to troublefree cooling towers a basic understanding of cooling tower operation and maintenance will help keep a cooling water system running in top condition, year after year by david m. The technology evaluation assesses side stream filtration for cooling towers. Cooling tower powerpoint free download as powerpoint presentation. See the more detailed explanation of cooling towers systems, diagrams, pictures and principles below table of contents what is a cooling tower how do cooling towers work. The evaluation provides a characterization of side stream filtration technology, describes typical applications, and details specific types of filtration technology.
The tower often consists of a sprinkler system which wets a highsurfacearea substrate plates continuously, while air flow through the chamber converts liquid to vapor. Understanding the basics of cooling tower heat transfer. Factors affecting cooling tower performance capacity utilization amount of water circulated range determined by the process it is serving determined by heat load and water circulation rate thus range. Cooling towers overcome most of these problems and therefore are commonly used to dissipate heat from watercooled refrigera tion, airconditioning, and industrial process systems. The three key components of a cooling system are the cooling tower, recirculating pump, and heat exchanger. All have been registered by the dutchess community college physical plant hvac supervisor with the nys department of health.
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