Zeitschrift für Thermodynamik und Katalyse
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Experimental Investigation of Shell and Finned Tube Heat Exchangers

Donie Groff

Shell and tube heat exchangers are important components in energy conversion systems, oil and chemical industries, etc. In these industries, the heat transfer rate and the total cost of the shell and tube exchangers significantly affect system designs. Extended surfaces (fins) of the shell and tube heat exchangers are applied to enhance heat transfer rates for gas and liquid heat transfer fluids. Fins can be of various geometrical shapes. Generally, fins increase the internal and external tube heat transfer coefficients. Fins are utilized less frequently to decrease shell-side thermal resistance. A suitable and an optimum design, in terms of both economics and efficiency, are obtained through judicious selection of the design parameters.

The design of an efficient heat exchanger has always been significant to equipment designers. The different methods to enhance heat transfer rate are being investigated for quite a long time. Web summarized the various kinds of heat transfer enhancement techniques and has classified them into two main categories viz. active techniques which require external power for heat transfer augmentation, and passive techniques which need no such external power for enhancement. One of the passive methods is the use of helically coiled tubes as heat exchangers.