Online cleaning of coolers
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It’s a fixed-tube-sheet cooler: the circulating water flows through the shell, while the fluid in question flows through the tube side. The flow rate of the circulating water is fine; the problem now is that the structure or excessive sediment buildup is affecting the heat exchange efficiency. The temperature difference between the inlet and outlet of the circulating water is around 4 degrees. Are there any effective solutions? Seeking advice
It is generally not advisable to use circulating water in the shell side of a fixed-tube-sheet cooler, as it is difficult to clean the shell side due to the inability to remove the core; currently, backwashing is the only solution available, otherwise the heat exchanger has to be replaced.
The pre-coating has been cleaned, but if water flows through the shell side, corrosion and structural damage are more likely to occur. It is recommended to apply anti-corrosion measures on the shell side, as well as implement backwashing procedures; otherwise, if water quality is not properly controlled, the heat exchanger is likely to be damaged beyond repair