Why shouldn’t the temperature of the cooling water at the outlet of the heat exchanger be too high
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As the title suggests, it’s said to be to prevent excessive water temperature from causing scaling. What is the reason for this?
This post was last edited by ylb913 on 2016-3-24 at 10:49. The circulating water used is either fresh water (groundwater, river water) or recycled wastewater; high temperatures can cause scaling, which leads to blockages in the circulation system of the heat exchanger and results in a loss of its cooling capacity. The evaporation rate of circulating water is very high, and the amount of water that needs to be replenished is also large; therefore, desalinated water cannot be used.
Personal opinion: How does a high outlet temperature occur? The outlet valve must definitely be closed partially; this results in a slow flow rate and a longer residence time, and combined with high temperatures, impurities tend to adhere. I’m not sure if it’s right!
What I mean is, why does high water temperature lead to scaling? Although I know that the principle is similar to that of scaling in hot water, I still don’t understand why
It’s not meant to mean that; it refers to controlling the temperature at the outlet of the cooling water, as a higher temperature makes scaling more likely
Are the substances that cause scaling salts? At too high temperatures, the solubility of some salts decreases, leading to scaling.
I just did some checking – it’s the calcium bicarbonate and magnesium in the solution that decompose when heated