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Shell Cover 28 Transverse Baffles or Support Plates 10 Shell Flange—Stationary Head End 29 Impingement Baffle or Plate 11 Shell Flange—Rear Head End 30 Longitudinal Baffle 12 Shell Nozzle 31 Pass Partition 13 Shell Cover Flange 32 Vent Connection 14 Expansion Joint 33 Drain Connection 15 Floating Tubesheet 34 Instrument Connection 16

Engineering Page > Heat Exchangers > TEMA designation

Channel and Removable Cover, One Pass Shell, Floating Head with Backing Device Floating Head Heat Exchanger. A floating head is excellent for applications where the difference in temperature between the hot and cold fluid causes unacceptable stresses in the axial direction of the shell and tubes.


A pressure vessel design code alone cannot be expected to cover all the special features of heat exchangers. To give guidance and protection to designers, manufacturers and purchasers, a supplementary code is desirable. ... stationary end head, rear end head and shell side nozzle configuration. ... Heat Exchanger Design Handbook (1994) Begell ...

Heat Transfer by Shell and Tube Heat Exchangers - TEMA ...

TEMA designations of Heat Exchangers. Because of the number of variations in mechanical designs for front and rear heads and shells, and for commercial reasons, TEMA has designated a system of notations that correspond to each major type of front head, shell type and rear head.

Shell and Tube Heat Exchangers Construction Details

Flanges are usually not provided for units with larger shell diameters. The removable cover permits access to the channel and tubes for inspection or cleaning without the need to remove the tube side piping. ... will often have a bonnet at the rear head (M channel) and will be designated as BEM. ... The shell-and-tube heat exchanger will ...

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Installation, Operation, & Maintenance Instructions …

of Floating Rear Tube Sheet units, allow sufficient space at the stationary head end to remove the tube bundle, and sufficient space at the floating head end to permit removal of the shell cover and/or floating head cover. The foundation of the heat exchanger should be adequate so that the unit will not settle and cause piping strains.

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Effectively Design Shell-and-Tube Heat Exchangers

hermal design of shell-and-tube heat exchangers (STHEs) is done by sophisticated computer software. However, a good un- ... The floating-head cover is secured against the floating tubesheet by bolt-ing it to an ingenious split backing ... ing either the shell or the floating-head cover, thus reducing mainte-nance time. This design is particular-

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Chapter 2: Heat Exchangers | Engineering360

globalspec› …› MANUFACTURING AND PROCESS EQUIPMENTShell and tube heat exchangers are designated by front head type, shell type, and rear head type as shown in Figures 1-4 and Table 1 from the Standards of …

Heat Exchanger Advantages and Limitations

Internal Floating Head Cover: 1. Allows for differential thermal expansion between the shell and the tubes. 2. Bundle can be removed from shell. for cleaning or repairing without removing the floating head cover. 3. Provides multi-tube pass arrangements. 4. Provides large bundle entrance area. 5.

What is a floating head type heat exchanger? Mention the ...

Shell cover at the floating head end is larger than the other end so as to enable the tubes to be placed as near as possible to the edge of the fixed tube sheet. The tube sheet along with floating head is free to move and take the differential thermal expansion between the shell and the tubes bundle.

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Principal Types Of Construction - Heat Exchangers

buffalobrewingstl› Heat ExchangersShell cover, split backing ring, and floating-head cover must be removed before the tube bundle can pass through the exchanger shell. With an even number of tube-side passes the floating-head cover serves as return cover for the tube-side fluid.

Split Ring type Heat Exchanger Floating Head joint Leak

Jan 08, 2011· The usual practice to test an AES exchanger is: 1%C2º remove channel, remove shall cover, remove floating head cover 2%C2º Mount fixed tube sheet test ring, mount floating tube sheet test ring 3%C2º Hydrostatic test shell to check for leaks on tube rolling expansions of both tube sheets 4%C2º Remove test rings 5%C2º Mount channel, channel ...

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