Design of S&T Heat Exchanger with COG away from Shell side 1

[Vessel_Eng]

Hi,

I have a situation where girth flanges & A cover of AEU Tema type Exchanger are very heavy (Tube Side Design pressure is very high, 140 barg).
As a result, Exchanger COG (Center of Gravity) is away from Shell side (COG is in the Channel side area).
Normally, Saddles are located on Shell side & COG is somewhere between Saddles means COG is on Shell side, which is not the case here.
We arrived at following 2 Possible solutions:
1. Design Exchanger for 3 Saddles (2 on shell side, while one saddle on Channel Girth Flange adjacent to A Cover, to support Channel Side weight)
2. Locate one saddle on Channel Cylinder & one Saddle on Shell Cylinder, such that COG is between two Saddles.

Solution 1 has got its own challenges such as design calculations for 3 saddle case, uneven distribution of loads etc.
Solution 2 will result in Operating/maintenance/handling issues, since it is a removable bundle design.

Request advice from Forum members about above 2 solutions.
Especially, if you could advise any other solution, that would be highly appreciated.

Regards

 

[CuMo]

Add a sliding guided support to the channel.
If it is a U-bundle as you say - I don't see any problems.
You can design your channel support any way you want.

 

[r6155]

CuMo
A free place is needed to remove the bundle.

Regards

 

[r6155]

CuMo.
There are traditional engineering of pressure vessel along the time: simple, economic, safe, nice to look, easy to construct, easy to maintenance, easy to replace..........
You don't have the power to change it.
Hope you understand.

Regards

 

[r6155]

I just found in TEMA 10th ed. 2019 "ZICK MODIFICATION FOR HEAT EXCHANGERS"

Regards