2 replies to this topic

[ankitg009]

Dear Fellow Engineers

Kindly guide me on this.

This question is really baffling me.

Say, there is a vessel of capacity 20 m3 in a 20 TPD plant. Now suppose i have to estimate the size of same vessel for a 10 TPD plant. Can i say that, if capacity is reduced by a factor of 2 , the vessel volume should be reduced by the same factor. ?? Is it the right methodology??

Secondly , for heat exchangers (Shell and Tube , Air Cooler etc) , can i use the same approach to estimate the heat transfer area.??

"Reason for applying this methodology: Both Volumetric flow rate and Heat transfer rate are directly proportional to mass."

Thanks in advance.

[srfish]

With a shell-and-tube heat exchanger that doesn't work if you are increasing capacity.This is because a larger heat exchanger has more tube rows for the shell fluid to cross The shell pressure drop would increase and would have to be compensated in some way.

[ankitg009]

Ohkay.. Thankyou for your reply.