Shell and Tube Heat Exchanger


    This is the most common type of heat exchanger in oil refineries and other large chemical processes. It consists of a shell (a large pressure vessel) with a bundle of tubes inside it. One fluid runs through the tubes, and another fluid flows inside the shell but over the tubes to transfer heat between the two fluids.

TEMA Nomenclature


There are several types of shell and tube heat exchangers, that can all be classified with 3 letters. The first letter designates the type of head at the front of the exchanger. The middle letter represents the body of the type of shell, and the third letter designates the rear type of end at the rear of the unit. The following form describes the types standardized by TEMA:

Heat Exchanger Nomenclature
(Please click the picture to download a pdf form)

TEMA Spec Sheet


When a heat exchanger is designed for a certain process, the necessary information about the two fluids' properties and the exchanger's characteristics are communicated using a data sheet standardized by TEMA. This is what a typical blank spec sheet will look like:

TEMA spec sheet
(Please click the picture to download a pdf form)

Excess Stock


Two 20" NEN heat exchangers are already fabricated and ready at a discounted rate. Please take a look at the manufacturer's data report and let us know if you require more details.
 
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