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If the design pressure drop for an air cooler is 20 kPa, what value does that refer to? Is it the pressure difference between the reflux drum of the distillation column and the top pressure of the column?
The outlet pressure is higher than the inlet pressure; is there any way to solve this?
No way, at most it will be the same height. The high outlet pressure is due to poor cooling; it is necessary to increase the heat exchange area or adopt a different cooling method.
After installing the air cooler on our side, the pressure in the reflux tank became 20 kPa higher than the pressure at the top of the tower. The liquid phase temperature of the air cooler is fine, and based on the temperature and condensation volume, there are no issues
It must be the pressure drop from the inlet to the outlet of the air cooler
Then consider the relationship between the vaporization volume, the reflux volume, and the production volume. One is to reduce the heat exchange area. The volume of cooled liquid is greater than the amount extracted and returned; the accumulation of liquid in the pipes may lead to high pressure in the return tank
If the design pressure drop of the air cooler is 20 kPa, it refers to the pressure difference between the inlet and outlet of the air cooler.
This refers to the pressure difference between the inlet and outlet of the air cooler