TY - GEN
T1 - Numerical investigation of heat transfer through a square heat exchanger with a twisted tape as a heat augmentation device
AU - Nanda, Rahul
AU - Narayanan, Akshith
AU - Kumar, Shiva
PY - 2019/9/3
Y1 - 2019/9/3
N2 - Active and passive methods can be used to enhance heat transfer accounting for increase in overall performance of double pipe heat exchanger. In our present study, efforts have been carried out to enhance the heat transfer in a square heat exchanger by adding geometrical modifications to the flow channel by incorporating inserts, i.e., a twisted tape. Tapes with constant cross section and varying twist ratios were placed in the centre of a square heat exchanger subjected to varying turbulent flow rates of Re 2500 to 10000 of water at 298K. The external wall of the heat exchanger was maintained at a constant temperature of 333K. Numerical simulation was carried out using ANSYS-15. Numerical results led to a conclusion that heat transfer rate was enhanced by decreasing the twist ratio of the tape and by increasing the Reynolds number of water flow. Results indicated an increase in Nusselt number and heat transfer for twisted tape compared to the bare tube for all mass flow rates.
AB - Active and passive methods can be used to enhance heat transfer accounting for increase in overall performance of double pipe heat exchanger. In our present study, efforts have been carried out to enhance the heat transfer in a square heat exchanger by adding geometrical modifications to the flow channel by incorporating inserts, i.e., a twisted tape. Tapes with constant cross section and varying twist ratios were placed in the centre of a square heat exchanger subjected to varying turbulent flow rates of Re 2500 to 10000 of water at 298K. The external wall of the heat exchanger was maintained at a constant temperature of 333K. Numerical simulation was carried out using ANSYS-15. Numerical results led to a conclusion that heat transfer rate was enhanced by decreasing the twist ratio of the tape and by increasing the Reynolds number of water flow. Results indicated an increase in Nusselt number and heat transfer for twisted tape compared to the bare tube for all mass flow rates.
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U2 - 10.1063/1.5123956
DO - 10.1063/1.5123956
M3 - Conference contribution
AN - SCOPUS:85072289071
T3 - AIP Conference Proceedings
BT - 1st International Conference on Advances in Mechanical Engineering and Nanotechnology, ICAMEN 2019
A2 - Dikshit, Mithilesh Kumar
A2 - Pathak, Vimal Kumar
A2 - Srivastava, Ashish Kumar
PB - American Institute of Physics Inc.
T2 - 1st International Conference on Advances in Mechanical Engineering and Nanotechnology, ICAMEN 2019
Y2 - 8 March 2019 through 9 March 2019
ER -