How to resolve the conflict between temperature difference control in circulating water cooling heat exchangers and the corrosion protection of these heat exchangers?
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The temperature difference in the heat exchangers of circulating water coolers needs to be controlled; generally, it should be no less than 6 degrees. However, in some cases where the heat exchangers are quite large and the flow rate of circulating water is very low, the water flow velocity inside the heat exchangers slows down, which facilitates the growth of bacteria or leads to under-scale corrosion, thereby significantly reducing the lifespan of the heat exchangers. How can we resolve the conflict between controlling the temperature difference in heat exchangers and preventing corrosion?
In such cases, it is possible to raise the temperature of the hot fluid inlet cooler, while also keeping the temperature of the circulating water from dropping too low in order to increase its flow rate. Additionally, when the area of the heat exchanger is large, there is no need to control the temperature difference between the inlet and outlet of the circulating water.
Generally, in cold weather, we increase the inlet temperature of the circulating water by stopping the fans, thereby raising the linear velocity of the circulating water.
What is the conflict between temperature differences and equipment corrosion protection? Welcome to learn about the electrochemical treatment technology for circulating water