A Review on Passive Heat Augmentation Techniques in Tube in Tube Heat Exchanger
Keywords:
Heat Exchangers, Inserts, Passive Techniques, Wire Coil Inserts, Twisted TapesAbstract
Almost all of the industries with mechanical manufacturing involves Heat Exchangers as a part of different processes. Thus researchers are always interested to enhance the heat transfer rate through the heat exchanger to improve the performance of heat exchanger. This is mainly done by passive method of enlarging heat transfer surface area. There are many techniques that are not only used for the enhancement of heat transfer rate but also to decrease the size of the heat exchanger and thereby cost the equipment. Passive techniques are the one of the most commonly used techniques having commercial applications. If passive techniques are used in Heat exchanger gives the better overall thermal performance. This improvement is signi?cant. A brief review of all the passive techniques is the objective behind this paper so that reader can get the overall idea about how these passive techniques help in heat transfer enhancement. It is found that different inserts have been investigated by different researchers but few inserts like various types of twisted tape inserts are most commonly investigated inserts by all of the researchers. They are also used at large scale in industry. The remaining techniques are also used by many of them but for speci?c work applications and that are also studied in this paper. It is worth to note that the all inserts shows better performance in laminar ?ow compared to the performance in turbulent ?ow.
How to cite this article: Palande DD, Desale PS. A Review on Passive Heat Augmentation Techniques in Tube in Tube Heat Exchanger. J Adv Res Appl Mech Compu Fluid Dyna 2019; 6(3&4): 31-35
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