Heat transfer augmentation using twisted tape inserts: A review

Varun,, M.O. Garg, Himanshu Nautiyal, Sourabh Khurana and M.K. Shukla

Renewable and Sustainable Energy Reviews, 2016, vol. 63, issue C, 193-225

Abstract: Heat transfer enhancement is an important matter of concern for energy conservation and also beneficial from economic point of view. The use of passive devices like twisted tapes, roughness elements, wires inserts etc. are effective methods of heat transfer augmentation. Many research studies on different types of twisted tapes geometries to increase heat transfer rate have been carried out. Also, several correlations were developed to determine heat transfer and friction factor for twisted tape inserts. In the present study, a review on work done in the area of heat transfer augmentation using twisted tapes has been carried out. Previous experimental and numerical studies on various types of twisted tapes (based on the literature survey) were discussed. These studies reveal that the future research in the area of twisted tapes will bring more development in the heat exchanger systems. The optimum shape for twisted tapes can also be developed based on maximisation of heat transfer and minimisation of friction factor regarding fluid used in the system.

Keywords: Heat transfer; Nusselt number; Friction factor; Twisted tapes; Inserts (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (7)

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DOI: 10.1016/j.rser.2016.04.051

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