Why cooling tower is used

They mostly use evaporative cooling that can cause a lot of water loss. In this era of modern science and awareness such a water loss cannot be hauled.

Therefore, latest industry have drift eliminators for cooling towers. No doubt ,most of the cooling towers use evaporative cooling that evaporates small droplets of pure water that give no such harm.

However , there is loss of liquid droplets that contain chemicals within them which can affect the environment badly. This can cause pollution but the cooling towers have efficient components known as drift eliminators. The drift eliminators are designed in such a way that they capture the water droplets that pertain in the air steamer of the cooling tower. They not only prevent them from damaging the environment but also save water by recycling it. The drift eliminators capture them by changing their direction and velocity as they encounter the special blade walls.

The design of walls may vary but they all change the direction as a result the water droplets are forced to go back in the cooling tower. Moreover the filters in them help to remove contaminants such as chemicals that can harm the atmosphere.

Whereas the special seal of the drift eliminator prevents the passing of water vapors into the atmosphere. Now a days, manufacturers have started using such materials for making eliminators that are cost friendly and recyclable too. This feature makes it the substantial thing to be used. Polypropylene in drift eliminators is a recyclable material that can tolerate heat better in them.

Moreover, Polyvinyl Chloride is lowest in cost and such drift eliminators are resistant from corrosion. These special materials make them the most adjustable and flexible component with high performance. They can easily maintain total drift loss by at least 0.

Therefore, they have taken cooling towers into a whole new sense being environment friendly. Cooling towers have many types depending on the airflow or design.

A few of them have been discussed. Cooling towers being the most robust industrial units need to be maintained. This maintenance can be achieved in many ways. The strainer system must be implemented to collect all the debris and contaminants.

Clogging can prevented by cleaning of the nozzles. The nozzles must be placed in accessible areas. The cooling tower can work properly when water treatment options are ensured. This may include water modeling, green chemical usage, and filtration etc. There should be deep cleaning of the cooling tower which can be done with the help of a cleaning chemical that circulates throughout the tower. Moreover, the components like fans, motors and belts should be inspected and cleaned when required.

In a short summary, a cooling tower cools down water that gets over heated by industrial equipment and processes. The hot water is usually caused by air conditioning condensers or other industrial processes. That water is pumped through pipes directly into the cooling tower.

The water is exposed to air as it flows throughout the cooling tower. When the air and water come together, a small volume of water evaporates, creating an action of cooling. It repeats the loop over and over again to constantly cool down the heated equipment or condensers.

There are many different types of cooling towers but the cooling tower working principles stay pretty much the same. What is Evaporative Cooling? Evaporative cooling is the process where warm water from an industrial process is pumped up to the top of the cooling tower where the water distribution system is.

The water then gets distributed by cooling tower nozzles to the wet deck. At the same time, air is being drawn through the air-inlet louvers forcing water to evaporate. Evaporation causes the heat to be removed from the make up water.

The hot air naturally rises out of the tire. An HVAC cooling tower is used for disposing or rejecting heat from chillers. Air cooled chillers are less effecient than water cooled chillers due to rejection of heat from tower water near wet-bulb temperatures.

Tradional HVAC heating and cooling systems are used in schools, large office buildings, and hospital. On the other hand, Cooling towers are much larger than tradional HVAC systems and are used to remove heat from cooling tower water systems in petroleum refineries, plants, natural gas processing plants, petrochemical plants, and other industrial processes and facilites.

Cooling towers are usually designed for specific purposes. To address this public health concern and liability, companies are treating the water inside of their industrial cooling towers with antimicrobial substances that kill the bacteria. As another precaution, plastic cooling tower systems can be manufactured with antimicrobial resins built into the unit materials and components to provide an additional layer of defense against Legionella.

Find out more about the anti-microbial product technology at Delta Cooling Towers. With the increasing concerns about meeting green standards and improving ROI on capital equipment expenditures, there are some standards to consider. A systematic approach to cooling tower greenness will improve sustainability, increase energy efficiency, add water conservation, and create a smaller carbon footprint; all while improving some cost ramifications involved in achieving such green goals.

In fact, businesses can save up to 40 percent on energy costs. While conventional cooling towers, often constructed with sheet metal cladding, are environmentally challenging and maintenance intensive, the alternative of using cooling towers with molded seamless plastic is immediately beneficial to both the environment and bottom line. Traditional metal towers, which last only a few years in many applications, encounter environmental and economic issues including increased chemical use, higher maintenance costs, replacement costs, and disposal requirements.

Engineered HDPE plastic design cooling towers allow the most aggressive water treatment options available. This can allow users to run at higher cycles of concentration, thereby saving make-up water. This can save tens of thousands of gallons of water per year. These water and chemical savings can be very large and help solve water issues as well as save on operating costs.

Cooling towers of this counterflow design also keep water totally enclosed and free from sunlight, thereby lessening the occasion for biological growth, which requires less harsh water treatment chemicals. Think of it this way: Cooling tower systems are essential to many businesses, which means looking for efficiencies in operations and products can help impact the bottom line. If the unit is made from plastic and uses water instead of air as a cooling method, business owners can anticipate reduced energy costs, little-to-no maintenance, and extended product longevity, compared to older, metal systems.

Furthermore, many customers appreciate knowing that the businesses and industries that support communities are environmentally conscious and working toward sustainable practices. That may not be a money-saving factor, but it could boost consumer confidence. Perhaps knowing more about cooling towers will give you a greater appreciation for cool air.

The approach is the difference between the temperature of the cold water leaving the tower and the wet-bulb temperature of the air. The establishment of the approach fixes the operating temperature of the tower and is the most important parameter in determining both tower size and cost. Bleed Off: is the circulating water in the tower which is discharged to waste to help keep the dissolved solids concentration of the water below a maximum allowable limit.

As a result of evaporation, dissolved solids concentration will continually increase unless reduced by bleed-off. Biocide: a chemical that is designed to control the population of troublesome microbes by killing them.

Blowdown: is the water purposely discharged from the system to control concentrations of salts or other impurities in the circulating water. Cooling Range: is the difference in temperature between the hot water entering the tower and the cold water leaving the tower. Cycles of Concentration: compares dissolved solids in makeup water with solids concentrated through evaporation in the circulating water. For example, chlorides are soluble in water so the cycles of concentration are equal to the ratio of chlorides in circulating water to chlorides in makeup water.

Dissolved Solids : total solids that have been dissolved into a liquid. Drift: is the water entrained in the airflow and discharged to the atmosphere. Drift loss does not include water lost by evaporation. Proper tower design can minimize drift loss. Heat Exchanger: is a device for transferring heat from one substance to another.

Heat transfer can be by direct contact, as in a cooling tower, or indirect, as in a shell and tube condenser. Heat Load: The amount of heat to be removed from the circulating water within the tower.

Heat load is also an important parameter in determining tower size and cost. Makeup: is the amount of water required to replace normal losses caused by bleed-off, drift, and evaporation. Pumping Head: The pressure required to pump the water from the tower basin, through the entire system and return to the top of the tower.

Wet Bulb : is the lowest temperature that water theoretically can reach by evaporation. Wet-Bulb temperature is an extremely important parameter in tower selection and design and should be measured by a psychrometer.

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