Help: Design of a single-tube-pass, four-shell-pass heat exchanger
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I would like to ask the experts here: has anyone ever worked on a fixed-tube-sheet heat exchanger with a single tube pass and four shell passes? There is one inlet and one outlet for the tubes in the shell side. Could you please advise on how to install a split diaphragm in the shell side?
First, I need to ask why you want to use four shell layers? Why make it so complicated? The best way to solve a problem is with a simple approach.
These are the conditions for improving the process; could it be to enhance heat transfer efficiency?
Let’s discuss the process again; I think there might be issues with the improvements proposed for it
Mm-hmm, I’ve only worked on four-pass designs before, or those with two shell passes; four-shell pass designs really do seem a bit complicated.
It can have four shell circuits, top and bottom, that is, a four-stage integrated design with separate refrigerant supply for each stage. It is also possible to use four passes on the left and right sides; this way, the temperature in the tube side at the refrigerant inlet is low, while the temperature in the tube side at the refrigerant outlet is relatively high. Three baffles can be placed in the middle of the shell side to achieve this
The more complex the equipment, the higher the failure rate; costs must be taken into account to make the best choice
Why can’t we consider swapping the positions of the process fluids in the shell and tube sides?
Four shell layers – that’s way too complicated. Two shell layers already result in an extremely complex manufacturing process