Effect of Twisted Tape Insert on Heat Transfer Enhancement in Counter Flow Co Axial Double Pipe Heat Exchanger using CFD

The twisted tape has great potential as a device for enhancing heat transfer. Twisted tapes hold the advantage over other techniques as they ease of installation and operation. From the previous studies, it is also found that there were rare researches on a combination of twisted tape insert and nanofluids. Therefore, the scope of the present study is concerned with the enhancement of the double pipe heat exchanger performance through twisted tape insert. To achieve these aims, a numerical model was constructed in order to investigate the effect of twisted tape on the heat transfer coefficient. This study investigates the heat transfer characteristics of Counter flow co axial double pipe heat exchanger using Al2O3 water nanofluids by inserting twisted tape turbulator of pitch 25mm inside the inner tube. The Al2O3 water nanofluids 0.4 1.6 particle volume concentrations were used. The simulation were conducted under the turbulent flow in the Reynold's number range of 4000 Re 20000. It is found that from the computational outcomes, the heat exchanger with twisted tape insert unveiled the best Nusselt number of 487.24 at Re=20,000 at 1.6 vol. of nanoparticle. By comparison, the Nusselt number of double pipe heat exchanger with twisted tape insert is 8.27 higher than with wire coil insert. Prof. Arvind Singh | Piyush Pathak "Effect of Twisted Tape Insert on Heat Transfer Enhancement in Counter Flow Co-Axial Double Pipe Heat Exchanger using CFD" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-5 , August 2020, URL: https://www.ijtsrd.com/papers/ijtsrd33047.pdf Paper Url :https://www.ijtsrd.com/engineering/mechanical-engineering/33047/effect-of-twisted-tape-insert-on-heat-transfer-enhancement-in-counter-flow-coaxial-double-pipe-heat-exchanger-using-cfd/prof-arvind-singh