Numerical investigation of heat transfer through a square heat exchanger with a twisted tape as a heat augmentation device

Rahul Nanda, Akshith Narayanan, Shiva Kumar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publication1st International Conference on Advances in Mechanical Engineering and Nanotechnology, ICAMEN 2019
EditorsMithilesh Kumar Dikshit, Vimal Kumar Pathak, Ashish Kumar Srivastava
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735418936
DOIs
Publication statusPublished - 03-09-2019
Event1st International Conference on Advances in Mechanical Engineering and Nanotechnology, ICAMEN 2019 - Jaipur, India
Duration: 08-03-201909-03-2019

Publication series

NameAIP Conference Proceedings
Volume2148
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference1st International Conference on Advances in Mechanical Engineering and Nanotechnology, ICAMEN 2019
CountryIndia
CityJaipur
Period08-03-1909-03-19

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All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • Physics and Astronomy(all)
  • Nature and Landscape Conservation

Cite this

Nanda, R., Narayanan, A., & Kumar, S. (2019). Numerical investigation of heat transfer through a square heat exchanger with a twisted tape as a heat augmentation device. In M. K. Dikshit, V. K. Pathak, & A. K. Srivastava (Eds.), 1st International Conference on Advances in Mechanical Engineering and Nanotechnology, ICAMEN 2019 [030034] (AIP Conference Proceedings; Vol. 2148). American Institute of Physics Inc.. https://doi.org/10.1063/1.5123956