The acronym TEMA stands for “Tubular Exchangers Manufacturers Association”, it is a trade association of leading manufacturers of shell and tube exchangers who have been pioneers in the research and development of heat exchangers. The front head piping must be unbolted to allow the removal of the front head, if this is undesired this can be avoided by applying a type A front head. The association meets regularly to update its published standards, respond to some inquiries, and discuss about the topics related to the industry.

In this way, it is possible to create pure counter current, which provides a particularly intensive heat transfer. Another important diagram from the TEMA standards is actually a table that helps us classifying different types of shell and tube exchangers … The cleaning of the tubes of the tube bundle must be done on both the inside and outside through the use of chemical means.
Members are market-aware and actively involved, meeting several times a year to discuss current trends in design and manufacturing.

AEL develops and produces shell and tube heat exchanger of all TEMA types. With safety double tube: SiRo heat exchanger are a special design of shell and tube heat exchanger for the handling of hazardous media.

Shell & tube heat exchanger classification diagram. TEMA's standard recognizes three separate classifications of exchangers . They are also often requested for oil cooling systems in mechanical and plant engineering for environmental reasons.

The Standards are regularly updated and published; the most recent edition is the seventh, published in 1988.

Working Group for Pressure Vessels, ASME, GOST, British Standard). Heat exchanger from AEL transform gases and steams to the liquid condition during cooling. The exchanger shown in this diagram is a floating head type shell & tube exchanger. No process and no plant resembles the other one. Shell and tube heat exchanger with U-tube bundle the legs of which are all sheathed: The shell tube system as a whole is bend back by 180° in case of this type, which shapes the heat exchanger as a hairpin.
The thermal design of a shell and tube exchanger is an iterative process which is normally carried out using computer programs from organizations such as the Heat transfer and Fluid Flow Service (HTFS) or Heat Transfer Research Incorporated (HTRI). They use produced process heat for this purpose. Figure 11 : TEMA type AEU. A special design of the shell and tube heat exchanger – an element cooler with rectangular tube bundle and plate fin.

The 10th Edition introduces numerous changes to the TEMA® Standards.

Figure 12 : U-type rear head. Furthermore, we also produce according to other standards (e.g. Generally, they need a lot of room because several double tube segments are compiled in a register. Heat exchanger from AEL are used in different industrial processes and in power engineering in order to transform liquids to the gaseous condition. This is a very popular version as the heads can be removed to clean the inside of the tubes.

Some examples of the TEMA designation for Heat Exchangers : BEM: Bonnet (Intergral Cover), One Pass Shell, Fixed Tubesheet Bonnet: Fixed tubesheet heat exchanger. This may entail liquids and / or gases.

The heat exchanger from AEL heat liquids and gases in different industrial processes and in power engineering. The heat exchanger from AEL cool liquids and gases in different industrial processes and in power engineering. The BEU heat exchangers are shell and tube exchangers with tube bundle consisting of specially "U" shaped tubes fixed by mechanical rolling to only one tube sheet.

They transfer thermal energy between separate fluids. Additionally, designs with double bottoms are available.

Furthermore, we also produce according to other standards (e.g.

They use produced process cooling or special cooling agents for this purpose. A medium flows through each of them.

U-TUBE HEAT EXCHANGER. Hairpin heat exchanger are used, for example, for waste heat utilisation, exhaust gas treatment, evaporation and condensation. Therefore, we develop and produce customer-specific heat exchanger in the following models: Principle of the enclosed tube bundle: Shell and tube heat exchanger consist of a hollow cylinder (shell) with inserted bundle of a large number of tubes. In this construction, both ends of a U-bent tube are fastened to a single stationary tubesheet, thus eliminating the problem of differential thermal expansion because the tubes are free to expand and contract.

Most shell and tube exchangers ordered by the process industries and for other high-severity applications throughout the world are built to TEMA standards. Please contact us, together, we will find the right solution for you. This type of exchanger is designed and built with removable shell and tube to allow easy maintenance. Many applications can be realised on this basis. AEL develops and produces shell and tube heat exchanger of all TEMA types.

The tube bundles can be designed as straight- or U-tube and can be connected to the shell tightly or drawable.

Working Group for Pressure Vessels, ASME, GOST, British Standard). TEMA has established a set of construction standards for Shell and Tube Heat Exchangers. Since the founding of the Tubular Exchanger Manufacturers Association in 1939, the TEMA® Standards have been specified by industrial plants worldwide. Such solutions are space-saving and are also suitable for media with large temperature differences due to their low thermal expansion. The heat exchanger can be used for all four important thermal engineering applications: Cooling, Heating, Condensation and Vaporisation.

The nomenclature of the TEMA (Tubular Heat Exchanger Manufacturing Association, USA) is the internationally recognised standard for types of shell and tube heat exchanger.

The association meets regularly to update its published standards, respond to some inquiries, and discuss about the topics related to the industry. Due to the large surface, heat exchanger of this kind have a high performance with comparatively low pressure losses.

Plate-Fin Heat Exchanger. The acronym TEMA stands for “Tubular Exchangers Manufacturers Association”, it is a trade association of leading manufacturers of shell and tube exchangers who have been pioneers in the research and development of heat exchangers.

… Each class has different mechanical construction requirements, based on the expected service.

The double tube wall prevents the contact with media even in case of leakages. A special design of the shell and tube heat exchanger – an element cooler with rectangular tube bundle and plate fin. Upon request, it is also possible to deliver products outside of this dimensioning range. SiRo designs are used, for example, in the chemical, pharmaceutical and food industry.

The heat exchanger from AEL are the main components of many process plants.

means that a TEMA heat exchanger type "NEN" will not require a floating head or torispherical head, elements that are also described in this document for the cases which do required them. Those classes are:

THE TEMA® STANDARDS AND SOFTWARE HAVE ACHIEVED WORLDWIDE ACCEPTANCE as the authority on shell and tube heat exchanger mechanical design. However, it is important that the engineer understands the logic behind the calculation.

Therefore, double tube heat exchanger are particularly used for smaller throughput quantities and lower temperature differences.

This may be the liquefaction or partial liquefaction of gaseous products in a production process – for example, for its cleaning, removal or storage, but it may also be the re-liquefaction of refrigerant or water steam. Double tube instead of shell: Double tube heat exchanger do not consist of tube bundle and shell, but only of a tube bundle – with outer and inner tube.

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