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      Study of a perforated hollow cylinder and twisted tape inserts as a compound device in a circular tube for heat transfer enhancement

      1 , 1 , 1 , 1 , 2
      Kerntechnik
      Walter de Gruyter GmbH

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          Abstract

          In the present study, the effect of perforated hollow cylinders and twisted tapes on fluid flow and heat transfer behavior of a circular tube is presented for the Reynolds number ( Re) range of 6000–40,000. The diametrical ratio ( DR) and perforation index ( PI) of compound devices are varied to determine the Nusselt number ( Nu) and friction factor ( f) for the combined perforated hollow cylinder (PHC) and twisted tape (TT) insert. The maximum value of Nusselt number ratio is found to be 3.19 and the minimum value of the friction factor ratio is obtained as 2.24. The PHC–TT combination provides the maximum thermal enhancement factor (TEF) of 2.43 for PI = 8%, and DR = 0.5.

          Most cited references28

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          Convective heat transfer in a circular tube with short-length twisted tape insert

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            Thermal characteristics in a heat exchanger tube fitted with dual twisted tape elements in tandem

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              Thermal characteristics in round tube fitted with serrated twisted tape

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                Author and article information

                Contributors
                (View ORCID Profile)
                Journal
                Kerntechnik
                Walter de Gruyter GmbH
                0932-3902
                2195-8580
                February 14 2022
                February 14 2022
                : 0
                : 0
                Affiliations
                [1 ]Department of Mechanical Engineering , DIT University , Dehradun 248009 , Uttarakhand , India
                [2 ]Department of Mechanical Engineering , G.B. Pant Engineering College , Pauri Garhwal , Uttarkhand , India
                Article
                10.1515/kern-2021-1030
                7f34d248-303b-4330-9916-1c353c68b01b
                © 2022
                History

                Sustainable & Green chemistry,Materials for energy,Chemistry,Batteries & Fuel cells,Industrial chemistry,Materials science

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