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A cooling tower extracts heat from water by evaporation. In an evaporative cooling tower, a small portion of the water being cooled is allowed to evaporate into a moving air stream to provide significant cooling to the rest of that water stream. Evaporative Cooling towers are relatively inexpensive and very dependable means of removing low grade heat from your process.
Cooling Towers are commonly used to provide lower than ambient water temperatures and are more cost effective and energy efficient than most other alternatives. The smallest cooling towers are structured for only a few gallons of water per minute while the largest cooling towers may handle upwards of thousands of gallons per minute. The pipes are obviously much larger to accommodate this much water in the larger towers and can range up to 12 inches in diameter.
When water is reused in the process, it is pumped to the top of the cooling tower and will then flow down through plastic or wood shells, much like a honeycomb found in a bee’s nest. The water will emit heat as it is downward flowing which mixes with the above air flow, which in turn cools the water. Part of this water will also evaporate, causing it to lose even more heat.
Closed loop (or closed circuit) cooling tower systems, also called indirect cooling tower systems, do not allow the water to come into contact with any outside substance, therefore keeping the water more pure due to the lack of foreign particles introduced. Contact Cooling Technology and one of our technical engineers will help you design one to meet your custom needs.
Another classification of cooling towers is made between field assembled towers and factory assembled towers. Field assembled towers are shipped in pieces and assembled on site by a highly qualified and certified installation team. Factory assembled towers typically only require the fan motor to be mounted. Please contact your Cooling Technology Sales Representative for more information on installation opportunities.
Since Cooling Technology, Inc uses only the highest quality Marley Cooling Towers©, those are the towers we will discuss. If you would like to be directed to the Marley Cooling Tower© website, please click here.
Cooling Tower Hot Water Distribution System: An open basin above each fill bank receives the hot water that is piped to each cell in the tower.
Cooling Tower Hot Water Basin: This basin receives the hot water that is piped into each cell in the tower and has removable covers to restrict the influx of debris. Water enters through a removable wave suppressor splash box.
Cooling Tower Fan: Fans are individually adjustable propeller type and driven through v-belts and protected with a belt guard, or with drive shafts and gear boxes.
Cooling Tower Fill, Louvers, and Drift Eliminators: Each fill sheet has louvers and drift eliminators formed by thermoformed PVC. The fills are suspended by hot dip galvanized structural tubing and are elevated above the floor of the cold water basin.
Cooling Tower Cold Water Basin: In a cooling tower, water is supplied from the discharge of the circulating water system to a distribution basin, from which the cooling tower pump takes suction. Accessories include both a side suction connection OR a hole and bolt circle in the basin floor suitable for gravity flow, which have debris screens and anti-cavitation devices.
Cooling Tower Pump: Pumps of a variety of sizes may be used, depending upon the size of cooling tower and the demands of your process. The technical engineers at Cooling Technology, Inc understand that each project is unique and will work diligently to make sure your site’s requirements will be matched to the best cooling tower and pump.
There are some limitations to using cooling towers. Their ability to cool is based on how much water is lost due to evaporation. The evaporation from a cooling tower is based on the quality of air in the surrounding area. If an area has high humidity, less water will evaporate than in a dry climate. In the winter, cooling towers are usually able to cool more efficiently as the air is drier. If the water is needed to be cooled to higher than 75°F, a cooling tower is recommended, dependent upon wet bulb temperature for the region. If water is needed to be cooler, a chiller may be better suited to your cooling needs than a cooling tower.
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