Experimental Comparative Analysis of Overall Heat Transfer Coefficient in Counter-Flow Heat Exchanger by using Helical Ribs

Authors

  • Ankesh Kumar  PG Scholar Department of Mechanical Engineering, Radharaman Institute of Technology and Science, Bhopal, Madhya Pradesh. India
  • Dr. Ajay Singh  Professor and Head Department of Mechanical Engineering, Radharaman Institute of Technology and Science, Bhopal, Madhya Pradesh. India ,
  • Dr. Parag Mishra  Associate Professor, Department of Mechanical Engineering, Radharaman Institute of Technology and Science, Bhopal, Madhya Pradesh. India

DOI:

https://doi.org/10.32628/IJSRSET207516

Keywords:

Helical ribs, Heat transfer coefficient, Reynolds number, Nusselt number.

Abstract

More performance or reduced the size of heat exchanger can be achieved by heat transfer enhancement technique. Tube helical ribs have been used as one of the passive heat transfer enhancement technique and are most widely used tube in a several heat transfer process. The results of the heat transfer characteristics in horizontal double pipe with helical ribs are presented. Six test section with different characteristics parameters of helical rib depth 1.0mm, 1.25mm, 1.5mm and helical rib pitch 4mm, 6mm, 8mm, are tested. Cold water and hot water are used as the working fluids in the shell side and tube side respectively. Experiments are performed under the condition of mass flow rate varying from 0.030 to 0.130kg/s for cold water and 0.040 to 0.140kg/s for hot water respectively. The inlet cold and hot water temperature are between 28- 300C and between 68-710C respectively. The results obtained from the tubes with helical ribs are compared with those without helical ribs. It is found that the helical ribs have a significant effect on the heat transfer coefficient and the heat transfer increases with the helical rib pitches and depth. Based on fitting the experimental data, on- isothermal correlations of the heat transfer coefficient and friction factor are proposed.

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International Journal of Scientific Research in Science, Engineering and Technology

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Published

2020-10-30

Issue

Volume 7, Issue 5, September-October-2020

Section

Research Articles

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How to Cite

[1]
Ankesh Kumar, Dr. Ajay Singh, Dr. Parag Mishra "Experimental Comparative Analysis of Overall Heat Transfer Coefficient in Counter-Flow Heat Exchanger by using Helical Ribs" International Journal of Scientific Research in Science, Engineering and Technology (IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 7, Issue 5, pp.42-53, September-October-2020. Available at doi : https://doi.org/10.32628/IJSRSET207516