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Most of the time while rating a shell and tube heat exchanger, we are given baffle cut percentage based on the area. Can anybody tell me that how to convert this percentage area to percentage dia baffle cut?
 
Answers
28/04/2012 A: manoj KUMAR, RIL, acer_asd@yahoo.co.in
I am giving you the formula for converting % dia to % area:
% area/100=(ACOS(1-2*(% dia cut/100)-(1-2*(% dia cut/100))*SQRT(1-(1-2*(% dia cut/100))^2))/PI
You use Excel to back calculate % dia from % area.
This corelation is obtained from a simple geometrical calculations. You can verify this formula by searching on internet.