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How to design Expansion Joint??

How to design Expansion Joint??

How to design Expansion Joint??

(OP)
Hi,

How do I determine if I required the Expansion Joint for shell and Tube heat exchanger(fixed Tubesheet type)?


Following are the max temperature for each condition listed below.

Design Conditions

Shell side  P(psig)=150    Temp(min/Max)=32/250 deg F
Tube side:  P(psig)=150/FV Temp9min/Max)=32/250 deg F

                           Shell     Shell    Tube     Tube    
                           sideT    side P   sideT    side P  
                             (F)       (psig)    (F)      (psig)  
                               
    

Normal Operation     43       50       57       -15
    
"Shell side fluid on
-Tube side fluid off"     32       57       32         0    

"Tube side fluid on
-Shell side fluid off"     70        0      142       -15    

Steam Out condition     70        0      278        25    


MOC is:

Shell= carbon steel(SA106B)
Tube= Hastelloy B3(SB626 UNS N10676)

Thanks for your response!!

Mechmania





     
     
     

     
     
     
     
     
     

     
     
     
     
     
     

RE: How to design Expansion Joint??

A calculation procedure is found in TEMA (Tubular Exchanger Manufacturers Association). It is not a simple calculation if you do it by hand.

You will need the metal temperatures of both sides as determined by a rating program. Unless the tubesheet is welded in, you will need the operating and gasket seating moments of the attached flange.

The worst expansion case is when the hottest temperature is in the tube side.

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