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Reasons for high circulating water temperature

2018-07-23View Original

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Currently, I have two fans in operation, along with three circulating water pumps. The outlet temperature of the circulating water is kept at 28 degrees as per the specified criteria; however, it has now risen to around 31 degrees. The valves leading to the tower have been opened to increase the cooling capacity, and the operation frequency is at 100%. One final step remains, which is to carry out a thorough flushing and replenishment. Is there any other good way to control the outlet temperature of the circulating water?
Reply #22018-07-23
I wonder where your project location is? Under full load, there are generally several reasons that can cause cooling over-temperature: 1) Is the temperature of the process stream on the hot side of the main unit exceeding the limit? The excessive temperature on the process side leads to an increase in the temperature of the return circulating water; as a result, the cooling effect does not meet the specified requirements ; 2) Excessively high air temperatures reduce the cooling efficiency; temperatures across the country have been high this summer. It is advisable to check what the designed air temperature for the unit is In such a case, it is possible to increase the blade angle of the fan, or if the frequency conversion capability allows, raising the frequency can also increase the fan’s speed ; 3) When the unit has been operating for a long time, the thermal resistance due to fouling on the fillers in the cooling tower increases, the contact area between the circulating water and the fillers decreases, and the heat transfer coefficient drops. At this point, the unit can be shut down to add chemicals and remove the fouling from the fillers. The above are the reasons I can think of; they are for reference only
Reply #32018-07-23
1. Buy some ice and throw it into the pool. 2. Add a cooling tower and a pump to draw water from the pool into the cooling tower and then back again. If the temperature is 36 degrees, it’s impossible to bring it down to 28 degrees using just a fan. It’s unrealistic
Reply #42018-07-23
If the fan current is low, check whether adjusting the blade angle can increase the air volume~~
Reply #52018-07-23
::lol:lol Okay, thank you
Reply #62018-07-25
The maximum temperature to which a cooling tower can cool the circulating water is the local wet-bulb temperature, and this can be determined by conducting experiments on your own. In other words, cooling towers are not omnipotent; their performance is closely related to the ambient temperature.
Reply #72018-07-30
Where is the device located? 31 degrees is also a normal temperature for circulating water

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