NEWS CENTER
Oasis Iceberg
12
2024
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07
What factors influence cooling tower selection?
Different equipment directly affects the quality of cooling water—closed-loop cooling towers are used for applications with high water-quality requirements, while open-loop and closed-loop cooling towers can both be chosen for scenarios with less stringent water-quality demands.
1. The Impact of Cooling Water Quality on the Selection of Closed-Loop Cooling Towers
Different equipment directly affects the quality of cooling water—closed-loop cooling towers are used for applications with high water-quality requirements, while open-loop and closed-loop cooling towers can both be chosen for scenarios with less stringent water-quality demands.
2. Cooling Capacity: How much flow rate of process fluid does the main equipment require? (Simply put, this refers to the hourly flow rate of cooling water.)
Cooling capacity is typically represented by Q, where Q = MSt. Here, M stands for the medium flow rate, S represents the specific heat capacity of the fluid, and t denotes the temperature difference between the inlet and outlet water. To ensure the cooling tower operates smoothly, Oasis Ice Peak Station considers, from the customer’s perspective, both the economic viability of equipment investment and the stability of usage. We’ll proactively discuss with customers whether or not to allow for a margin of safety before finalizing the equipment size—ensuring it’s just sufficient for your needs without any wastage, helping you save every single penny.
3. Inlet Water Temperature and Outlet Water Temperature
This is a critical parameter for cooling tower selection, as it directly determines the accuracy of the chosen equipment. The outlet water temperature depends on the local wet-bulb temperature. Since water cools primarily through the principle of evaporative heat dissipation, when the moisture content in the air reaches a certain saturation point, the rate of evaporation significantly decreases, slowing down the temperature drop. Consequently, any variation in the local wet-bulb temperature will directly impact the cooling tower's refrigeration performance.
4. Local Wet-Bulb Temperature
Measuring the local wet-bulb temperature is straightforward: To do it yourself, simply wrap the sensing bulb of a thermometer with moistened gauze and immerse the lower end of the gauze into a water-filled container—this creates a wet-bulb thermometer. Place the wet-bulb thermometer in a well-ventilated area to ensure continuous airflow; the reading displayed on the thermometer at that moment will be the wet-bulb temperature. In general, the minimum cooling temperature achievable by a cooling tower can only approach—but never fall below—the local wet-bulb temperature. (For example, if the local wet-bulb temperature is 28°C, the cooling tower cannot bring the water down to 27°C.) If you need to cool water below the wet-bulb temperature, you’ll have to use an additional chiller or other cooling equipment in conjunction with the cooling tower.
As a result, selecting a closed-circuit cooling tower is quite complex. Users should carefully consider the factors mentioned above before making their choice—rather than simply relying on product descriptions.
Oasis Bingfeng Fluid Equipment Co.,Ltd
Contact Phone:+86 4000 616 676
Fax:+86 0310 3178005
E-mail:sales@hdbingfeng.com
Contact Address:No.1, Happiness Road, Feixiang Economic Development Zone, Handan City, Hebei Province
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