NEWS CENTER
Oasis Iceberg
11
2024
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07
What are the main aspects of water consumption in closed cooling towers?
When using closed-circuit cooling tower equipment, to ensure that the cooling water quality meets national environmental protection standards, a certain proportion of the cooling water must be drained off periodically for replenishment and renewal. In this regard, it's important to control the drainage rate of the closed-circuit cooling tower equipment to 0.3% of the total cooling water volume; alternatively, users may determine the drainage amount themselves according to relevant environmental protection technical guidelines.
The water consumption of a closed cooling tower also includes the proper draining of cooling water.
When using closed cooling tower equipment, to ensure that the cooling water quality meets national environmental protection standards, a certain proportion of the cooling water must be drained periodically for replenishment and renewal. In this regard, it's important to control the drainage volume of the closed cooling tower equipment to 0.3% of the total cooling water volume; alternatively, users may determine the drainage amount themselves according to relevant environmental protection technical guidelines.
The water consumption of a closed cooling tower includes the partial evaporation of the cooling water.
The water consumption of a closed cooling tower includes the partial evaporation of the cooling water.
When using closed cooling tower equipment, it's important to note that some water evaporation leading to coolant consumption is normal and necessary.
Its consumption level is not only closely related to the quality, flow rate, and cooling magnitude (i.e., heat load) of the cooling water itself, but also depends on the temperature of the air entering the tower—both dry-bulb and wet-bulb temperatures—as well as its mass flow rate.
The water consumption of a closed cooling tower is related to drift loss:
The water consumption in a closed cooling tower—actually an abnormal form of water usage—is also one of the key indicators for evaluating the technical performance of the equipment. Typically, drift loss must be kept below 0.2% of the total cooling water volume.
Its size depends on factors such as the structure of the water tower (whether or not it incorporates water-removal equipment), the performance of the fan (including air volume, wind pressure, and adjustments to blade angles, as well as their proper matching), the compatibility with the water pump, and the quality of the water tower's installation.
As mentioned above, we should also note that when the closed-circuit cooling tower equipment is operating normally, the make-up water required accounts for 1.3% of the total water volume.
When designing closed-circuit cooling tower equipment in practice, it is recommended to increase the drift loss to 2.5%.
If considering the inhibition of lung-affinity bacteria, the concentration should be greater than 4%. For the closed cooling tower equipment manufactured by our company,
Because drift loss is extremely minimal, the automatic makeup water required during operation accounts for only 0.83% of evaporation losses—yet the design inevitably increases this to 1%.
(Pictured are the on-site construction drawings)
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