A Review on Various Enhancement Techniques of Heat Transfer by Using Tube in Tube Heat Exchanger with Twisted Tape Insert

Authors(3) :-Satish Kumar Aharwar, Dr. Ajay Singh , Ashish Verma

Working towards the goal of saving energies and to make compact the design for mechanical and chemical devices and plants, the enhancement of heat transfer is one of the key factors in design of various equipment’s such as heat exchangers, refrigerator, air-conditioner etc. In this process without application of external power we can enhance the heat transfer rate by modifying the design by providing the roughness in tubes. Various artificial roughness in tubes finds applications in automobile, aerospace, power plant and food industries due to certain advantages such as compact structure, larger heat transfer surface area and improved heat transfer capability. Nusselt number, friction factor, pumping power required and LMTD variation of flowing fluid with respect to Reynolds number is studied for different parameters. This paper describes complicated behavior of fluid flow and is captured for both the fluids flowing inside and outside the tube. From literature, it has been found that with increases in P/d ratio the Nusselt number will decrease and the outer wall boundary condition does not have any significant effect on the inner Nusselt number. The Darcy friction factor decreases with increase in Reynolds number. The Pumping power increases with increase in Reynolds number for all the condition of P/d ratio and for all the boundary conditions. The optimization point between Nu and pumping power with respect to Re; shifts toward the higher Reynolds number with increase in P/d ratio.

Authors and Affiliations

Satish Kumar Aharwar
M.E. Scholar, Department of Mechanical Engineering, Radharaman Institute Technology & Science, Bhopal, MP, India
Dr. Ajay Singh
Professor & Head, Department of Mechanical Engineering, Radharaman Institute Technology & Science, Bhopal, MP, India.
Ashish Verma
Assistant Professor, Department of Mechanical Engineering, Radharaman Institute Technology & Science, Bhopal, M.P., India.

Nusselt number, Reynolds number, friction factor, pumping power, LMTD and pitch diameter ratio (P/d ratio).

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Publication Details

Published in : Volume 4 | Issue 4 | March-April 2018
Date of Publication : 2018-04-30
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 250-258
Manuscript Number : IJSRSET184464
Publisher : Technoscience Academy

Print ISSN : 2395-1990, Online ISSN : 2394-4099

Cite This Article :

Satish Kumar Aharwar, Dr. Ajay Singh , Ashish Verma, " A Review on Various Enhancement Techniques of Heat Transfer by Using Tube in Tube Heat Exchanger with Twisted Tape Insert, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 4, Issue 4, pp.250-258, March-April-2018.
Journal URL : http://ijsrset.com/IJSRSET184464

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