#TEMA TYPE INSTALL#

Floating tube sheet allows for differential thermal expansion between the shell and tube bundle.In most cases, straight tube removable bundles are a more costly design that U-tube designs. Special floating tube sheet prevents intermixing of fluids. This design allows for the easy removal, inspection and cleaning of the shell side circuit and shell interior without removing the floating head cover. Removable Bundle, Outside Packed Head: Type BEP, AEP, etc. Packing material limits operational pressure and temperature.Tube side passes are limited to one or two passes.Maximum surface area for specified shell diameter for a removable bundle.Tube bundle can be replaced or repaired without breaking the piping on the shell side.Shell side can be inspected and mechanical cleaned.Floating tube sheet allows for Thermal Expansion.With BascoвЂ™s OP design, the head can be removed for inspection of the interior of the tubes, without releasing the pressure on the shell side process. This design allows for the tube bundle to be removed for inspection and cleaning. Removable Bundle and Externally Sealed Floating Tube sheet: Type AEW, BEW No ability to absorb thermal expansion between the outer shell and tube bundle.Shell side can only be cleaned by a chemical solution.Less costly than removable bundle designs.The tube sheet is welded to the shell and heads are bolts to the tube sheet. This design is the simplest design and most economical in most cases. Straight Tube and Fixed Tube Sheet: Types BEM, AEM, NEN, etc The figure below is helpful in visualizing each segment. IE: TEMA Type BEM would have the вЂњBвЂќ representing the front head, the вЂњEвЂќ the core or middle section and M representing the rear head designs.

TEMA designations refer to portions of the unit that make up the complete heat exchanger. TEMA B and TEMA R are similar in requirements and typically require features like, confined gaskets joints, spiral wound gaskets along with some greater minimum thicknesses on some parts. TEMA C is the least restrictive and most widely used. There are 3 major TEMA classifications, which are as follows

#TEMA TYPE INSTALL#

One of the advantages of selecting a shell & tube manufacturer that builds to TEMA specifications is that the end-user is assured that they will receive and install a piece of equipment that is built to certain specificationвЂ™s and criteria. These standards define the style of heat exchanger and the machining and assembly tolerances. TEMA stands for вЂњTubular Exchangers Manufacturers AssociationвЂќ and is a set of standards that were developed by leading shell and tube manufacturers.

Tema type