【Why do air-cooled towers use both cold and warm cooling water?】
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As the title says. Is it because such a large amount of water is necessary to achieve the best heat exchange performance in the air-cooled tower?
Everyone, feel free to share any thoughts or opinions you have
The air passing through the air compressor is very hot; it first exchanges heat with warm water and then with cold water. I believe the purpose of this is to slow down the cooling process of the air, to allow it to cool gradually. Prevent a large amount of water from evaporating into water vapor, which could change the composition of the air and affect subsequent processes
One is to cool down, and the other is to clean the air.
Warm water is usually recycled water; it requires a large amount but has a low cost. Cold water is water that has been cooled by a chiller; it has a low temperature and can cool the air to the temperature range required by the process.
First, ensure proper heat exchange; moreover, the amount of water at low temperature at the top should be limited to prevent water from being present at the outlet of the air-cooled tower~~
It is mainly due to the drop in temperature; an excessive flow rate of chilled water can cause the molecular sieve to absorb water
The water temperature pumps can also be replaced with the final-stage cooler of the air compressor, which reduces the amount of circulating water required; as a result, two water temperature pumps are unnecessary, and internal circulation of chilled water is sufficient.
Plain room temperature water cannot cool the air to meet the requirements for feeding it into the molecular sieve! Of course, if the temperature of the tap water in a certain place is low enough, I think a freezer isn’t necessary!
Thank you all for your answers(*°?°)=3
Lower energy consumption for step-by-step cooling. It is better if water at more than two different temperatures is used for cooling. Of course, considering the overall costs, it may not be cost-effective.