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AutoPIPE Wiki 36. How is shell length interpreted in AutoPIPE Vessel?
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            • 01. When choosing a 8" nominal shell size the O.D. is reflected as 8.78" O.D. (it should be 8.625").
            • 02. How to import Aspentech edr file into AutoPIPE Vessel?
            • 03. For a shell and tube exchanger with fixed tubesheets, the AutoPIPE Vessel is locked with the "Mechanical cleaning" option even if the option is unchecked?
            • 04. How to manage the baffle spacing of a heat exchanger in AutoPIPE Vessel?
            • 05. How to manage the number of Tubesheets in an AutoPIPE Vessel heat exchanger
            • 06. How to see the pass order number and how to change it in an AutoPIPE Vessel model?
            • 07. Model imported from HTRI suggest tubesheet has 360 tubes, however AutoPIPE Vessel suggest only 332, why?
            • 08. Number of Heat exchanger tubes and path are different in the AutoPIPE Vessel report, why?
            • 09. When changing the material on tubeside, focus of the model changes to a different location in an AutoPIPE Vessel model, why?
            • 10. Why are the ASME 2019 - appendix A-2 calculation for Tubesheet with tubes expanded + seal welded not performed?
            • 11. Why is tubesheet layout not full of tubes?
            • 12. How can I insert the shell connection on the head of a heat exchanger in AutoPIPE Vessel?
            • 13. How to connect two different shell radius (ex. dia #1 =4000 mm, dia #2 = 4220 mm) that have a 50 mm gap between them in AutoPIPE Vessel?
            • 14. How to model customized base plate of a Saddle support for Shell and Tube Heat Exchanger in AutoPIPE Vessel?
            • 15. Use TEMA Metric Bolt Root Area (TEMA Table D-5M) from section 9 in an AutoPIPE Vessel model.
            • 16. Where to input extra cladding thickness on tubesheets in AutoPIPE Vessel?
            • 17. How to Change the the corrosion allowance for clad bottom plate on a heart exchanger model in AutoPIPE Vessel?
            • 18. How do I design a stacked heat exchanger?
            • 19. How does AutoPIPE Vessel set the design conditions for tubesheet?
            • 20. How to define shell length in different types of Heat Exchanger in AutoPIPE Vessel
            • 21. Where do we mention Creep and Fatigue data on Heat exchanger ? We can see tick mark but how about magnitude ?
            • 22. Where do we mention MMT (Mean Metal Temp) in AutoPipe Vessel for Fix tube sheet Heat Exchanger?
            • 23. Heat Exchanger Geometry
            • 24. Heat Exchanger Pass Partition Plate Modification
            • 25. How to manage the baffle spacing of a heat exchanger?
            • 26. Does AutoPIPE Vessel automatically update the tubesheet design conditions when the heat exchanger design conditions are changed?
            • 27. How to use the Tube sheet Design Conditions dialog in AutoPIPE Vessel?
            • 28. What is the difference between tubesheet design condition and design case?
            • 29. While designing a AutoPIPE Vessel heat exchanger tubesheet flange, the "Use EN 13445 Annex G/EN 1591" option is greyed out, why?
            • 30. The definition of the characteristics of the gasket under the pass partition in a heat exchanger is not possible
            • 31. How to model and design heat exchanger with shell dimension based on nominal pipe size?
            • 32. How to specify shell ID instead of tube numbers in modeling the tube layout?
            • 33. How is shell length for heat exchanger determined in AutoPIPE Vessel?
            • 34. How can I input a specific bundle characteristics using AutoPIPE Vessel?
            • 35. How AutoPIPE Vessel calculates the shell length at the time of Heat Exchanger Design ?
            • 36. How is shell length interpreted in AutoPIPE Vessel?
            • 37. Is the corrosion allowance taken into account for the tubes in an ASME design?
            • 38. Why can't I choose a "Double Segmental" baffle type for a BFM heat exchanger which is a common design method for those?
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    36. How is shell length interpreted in AutoPIPE Vessel?

    Applies To
    Product(s): AutoPIPE Vessel
    Version(s): ALL
    Area: Modeling
    Date Logged
    & Current Version
    March 2019
    41.00.00.006

    Problem:

    How is shell length interpreted in AutoPIPE Vessel?

    Solution:

    Consider following example.

    Consider following example.

    The shell length is mentioned as 6000 mm.

    Consider the left ellipsoidal head which has a flange length of 50 mm

    Consider right head which also has a straight flange length of 50 mm

    Execute the model to get the results.

    Observe that the length of the barrel is composed of 2 parts, barrels with lengths 3000 and 2900 mm.

    This is because the length of 6000 mm entered in shell length included the straight flange portions of the 2 heads (50+50=100mm), so shell length = 6000-100 = 5900 mm, this is how the lengths of shells are determined.

    The reason the shells are composed of 2 sections 3000 and 2900 mm is because in the geometry tab the plate width for rolling of shell courses is set as default 3000 mm (can be changed by user to any other value but standard mill plate width is 3000mm) so first shell is 3000mm the other one is 5900-3000=2900 mm.

    See Also

    AutoPIPE Vessel

    Bentley LEARN Server

    • AutoPIPE Vessel
    • Interpreted
    • Shell Length
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    • Mike Dattilio Created by Bentley Colleague Mike Dattilio
    • When: Fri, Mar 15 2019 9:25 AM
    • JamieP Last revision by Bentley Colleague JamieP
    • When: Wed, Aug 26 2020 11:22 AM
    • Revisions: 2
    • Comments: 0
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