Dear all,
I calculated pressure drop of a shell side of a shell and tube heat exchanger.
Pressure drop by Kern method is very large as compared to Bell Delaware method. ( I also confirmed it , as I could see a solved example in Coulsen and Richardsons chemical engineering design book by Sinnott, there also a large difference in pressure drop by Kern and Bell Delaware method exists).
I also further confirmed it following steps given in Hewitt s handbook ( A chapter by J. Taborek).
In general , which one is more suitable?
Bell Delaware is detailed (flow leakages, bypass etc) as compared to Kern's Method ( and I need these details , as my research includes varying these details). Therefore, I cannot use Kern's Method.
Can you please suggest what can be done?
Thanks alot.
Dear Parag Patil
First if you need all the detail as you said then Bell Delaware is your option. Kern overstimates the pressure drop and this is a safty factor when desiging HX .
If you have Aspen Exchanger Design and Rate then use it to get same results. this kind of software can give you a better feedback on what you need, as long as you know what you are doing and which are the limitations of the software. it can not give you direct asnwers, those are for the engineer to decide
Dear Parag Patil
if you would like provide the process conditions for your hx and i can simulate it , and give you some preliminary results
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