PaulMinchin
Chemical
- Dec 6, 2002
- 2
Hi,
I have an air cooled heat exchanger that is partially condensing a water/gylcol mixture. We have concerns that, when it rains, the partial condenser will turn into a total condenser and as such will reduce the pressure in the overheads line.
Basically, the exchanger will change from being a standard air cooler to being a wet surface air cooler (ie. an evaporative air cooler).
We are going to simulate this effect (using Hysys.Plant) however I need to know how much the UA will increase when it rains.
Noraml U value is 31.0W/m2°C with a finned area of 436.6m2.
Thanks for your help,
Paul
I have an air cooled heat exchanger that is partially condensing a water/gylcol mixture. We have concerns that, when it rains, the partial condenser will turn into a total condenser and as such will reduce the pressure in the overheads line.
Basically, the exchanger will change from being a standard air cooler to being a wet surface air cooler (ie. an evaporative air cooler).
We are going to simulate this effect (using Hysys.Plant) however I need to know how much the UA will increase when it rains.
Noraml U value is 31.0W/m2°C with a finned area of 436.6m2.
Thanks for your help,
Paul
