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.
Heat Exchanger; Passive Techniques; Turbulators; Twisted Tape insert; Nano-fluid; and Computational fluid dynamics
International Journal of Trend in Scientific Research and Development - IJTSRD having
online ISSN 2456-6470. IJTSRD is a leading Open Access, Peer-Reviewed International
Journal which provides rapid publication of your research articles and aims to promote
the theory and practice along with knowledge sharing between researchers, developers,
engineers, students, and practitioners working in and around the world in many areas
like Sciences, Technology, Innovation, Engineering, Agriculture, Management and
many more and it is recommended by all Universities, review articles and short communications
in all subjects. IJTSRD running an International Journal who are proving quality
publication of peer reviewed and refereed international journals from diverse fields
that emphasizes new research, development and their applications. IJTSRD provides
an online access to exchange your research work, technical notes & surveying results
among professionals throughout the world in e-journals. IJTSRD is a fastest growing
and dynamic professional organization. The aim of this organization is to provide
access not only to world class research resources, but through its professionals
aim to bring in a significant transformation in the real of open access journals
and online publishing.