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Oasis Iceberg
11
2024
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07
How much can a cooling tower typically reduce the temperature by?
Normally, the temperature of a cooling tower cannot drop indefinitely—on paper, the lowest it can go is wet-bulb temperature plus 3 degrees.
Customers purchasing closed-circuit cooling towers invariably ask how much the temperature can typically be reduced.
Normally, the temperature of a cooling tower cannot drop indefinitely—on paper, the lowest it can go is wet-bulb temperature plus 3 degrees.
So, what exactly is the wet-bulb temperature of a cooling tower? As a professional manufacturer of cooling towers, Oasis Ice Peak is here to provide you with a detailed explanation in this article!
The wet-bulb temperature is the lowest temperature that water can naturally reach through evaporation under ambient conditions at a given location. This temperature can be referred to as the limit for cooling tower performance—but in practice, we can’t always achieve it exactly. Instead, the range we can reliably maintain is typically the wet-bulb temperature plus 3 degrees Celsius, which represents the normal minimum temperature for effective cooling.
The wet-bulb temperature varies across different regions, making it a crucial selection factor when choosing cooling towers for specific locations. According to the principle of cooling towers, if we want to reduce the outlet water temperature down to the wet-bulb temperature, we would theoretically need to make the cooling tower infinitely large—though even then, we could only get infinitely close to the wet-bulb temperature. Of course, this scenario is entirely impractical in real-world applications.
During the heat exchange process in cooling towers, the media used for condenser heat transfer include air and spray water. The air refers to the ambient air from the natural environment; throughout the entire refrigeration and heat dissipation process, airflow is continuously circulated. To enhance cooling efficiency even further, the exhaust air is typically prevented from being released directly and instead redirected for secondary circulation.
Wet-bulb temperature, as an important environmental condition indicator, influences the final cooling temperature of cooling towers. The local wet-bulb temperature can be measured using a commonly used dry-and-wet bulb thermometer.
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