Tag Archives for Downcomer Clearance

Improper Downcomer Clearance

The bottom edge of the downcomer from the tray above should be 0.25 to 0.5 in below the top edge of the weir of the tray below. This is called a positive downcomer seal. Without a positive downcomer seal, vapor … Continue reading

29. March 2011 by Jack
Categories: Tower Pressure | Tags: | Leave a comment

Trays Downcomer Clearance

Referring to Fig. 3.5, note that the downcomer B is flooding. The cause is loss of the downcomer seal. The height of the outlet weir is below the bottom edge of the downcomer from the tray above. This permits vapor … Continue reading

24. January 2011 by Jack
Categories: Tray | Tags: | Leave a comment