The same equipment takes longer to cool down
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The same three storage tanks CD1, CD2, CD3, the same materials, the same equipment, and the same ethylene glycol feed pipe! However, the cooling time CD1 is 4 hours longer than others. 1. The heat exchanger tubes have been cleaned last year, and the pump pressure is normal, which means the tubes are not blocked. 2. The heat exchanger shell uses ethylene glycol, which is dirty. I am not sure if the shell is blocked. Is there any other reason? I hope Haiyou can provide guidance! !
This post was last edited by CHANGBAISHI on 2020-6-1 15:44 "Ethylene glycol is dirty, not sure if the shell layer is blocked." This is the most likely. Is it possible to drain some at the bottom of the shell side to see if the effect can be better. On the premise of not affecting the heat exchange, it is for reference whether it can be alleviated by changing the inlet and outlet.
Generally, in this case, we usually use process backflush, and the effect may be better! :victory: