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heat excahger tube length & inlet flow rate scale up

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delf

Chemical
Joined
Feb 23, 2011
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17
Location
TW
Dear eng-tips forum members:

My new project plant capacity is scale up from 3000 tons to 6000 tons. And, new project shell and tube heat exchanger duty is scale up from 1000kw to 2000 kw. I wonder I only knew the heat excahger data sheet infromation from 3000 tons plant. How could I develope the heat exchagner size of the 6000 tons project?

Is posssible that the heat exchagner duty is 2 times greater than old one so I can conclude that the flow rate from tube side and shell side are also two times greater than old one?


Thank you so much for your help.

 
delf,

That is true only if the temperatures are the same as for the smaller exchanger.

Regards,

Speco
 
This is not quite so simple - it depends on temperatures as speco has stated but you also need to consider allowable pressure drops. Adding length is not enough - this needs more careful analysis.
 
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