Analysis of Heat Transfer Enhancement in Tube-in-tube Helical Coil Heat Exchangers
Ruchal G. Humbare1, Suraj R. Gurav2, S. B. Trimbake3
1Ruchal G. Humbare, Department of Mechanical Engineering, P. E. S. Modern College of Engineering, Pune (M.H), India.
2Suraj R. Gurav, Department of Mechanical Engineering, P. E. S. Modern College of Engineering, Pune (M.H), India.
3S. B. Trimbake, Department of Mechanical Engineering, Faculty of Electrical and Mechanical, College of Military Engineering, Pune (M.H), India.
Manuscript received on 15 October 2015 | Revised Manuscript received on 25 October 2015 | Manuscript Published on 30 October 2015 | PP: 102-108 | Volume-5 Issue-1, October 2015 | Retrieval Number: A4308105115/15©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The heat exchangers most widely used are shell and tube heat exchangers which are larger in size and offer lesser heat transfer rate. Also, in shell and tube heat exchanger dead zone is produced which further reduces heat transfer rate and in order to improve heat transfer rate some active techniques are required. Helical heat exchanger is more compact, offer better heat transfer rates and heat transfer rate can be further improved by passive techniques. Its shape offers advantages such as more fluid contact, elimination of dead zones, and secondary turbulence. An experimental test rig was developed for evaluation of tube-in-tube helical coil heat exchanger. This paper deals with parametric analysis and its effect on performance of tube-in-tube helical coil heat exchanger.
Keywords: Tube-In-Tube Helical Coil, Dean Number, Dimensionless Pitch, Curvature Ratio, Effectiveness, Secondary Turbulence, Heat Transfer Coefficient, Nusselt Number.
Scope of the Article: Heat Transfer