DESIGN AND COMPARATIVE CFD ANALYSIS OF SHELL AND TUBE HEAT EXCHANGER

M. Satish Kumar, Mr. A. Harish, Mrs. G. Santhoshirathnam

Abstract


Heat exchangers are one of the most important components of the processing industries and also power plants. The pressure drop and the temperature variation in them are altered based on the component design as per operating parameters. As an integral part of design, baffles which are part of the heat exchanger serve the purpose in altering the pressure drop. In order to reduce the flow induced vibrations and reduce pressure drop different types of baffles are being designed and used and one such baffle is helical baffle. Helical baffles force the flow through the system be to be rotational and follow a helical path due to the geometry of the continuous helical baffles, which results in a significant increase in heat transfer coefficient per unit pressure drop in the heat exchanger. Besides this a properly designed continuous helical baffles can reduce fouling in the shell side and prevent the flow-induced vibration as well.

In the current study an attempt has been made to understand the influence of baffle design on the pressure drop in the heat exchanger. A comparison was made between a segmental baffled, helical baffled and a bafflesless heat exchanger by designing the baffles and performing CFD simulation using CATIA V5 and ANSYS 15.0. It was concluded from the results that helical baffles which are our primary interest of study showed an effective pressure drop of 0.17134Pa which varied slightly from the other two. Further the pressure drop can be improved by modifying the design of heat exchanger with helical baffles.


Keywords


CFD Analysis; CATIA; ANSYS; Velocity;

References


. M. Thirumarimurugan, T.Kannadasan and E.Ramasamy, Performance Analysis Of Shell And Tube Heat Exchanger Using Miscible System, American Journal Of Applied Sciences 5 (5): 548-552, 2008

. Usman Ur Rehman, Heat Transfer Optimization of Shell-And-Tube Heat Exchanger through CFD Studies, Chalmers University of Technology, 2011.

. Jian-Fei Zhang, Ya-Ling He, Wen-Quan Tao, A Design And Rating Method For Shell-And-Tube Heat Exchangers With Helical Baffles, Journal Of Heat Transfer, May 2010.

. Muhammad MahmoodAslamBhutta, Nasir Hayat, Muhammad Hassan Bashir, AhmerRais Khan, KanwarNaveed Ahmad, Sarfaraz Khan5, CFD Applications In Various Heat Exchangers Design: A Review, Department Of Mechanical Engineering, University Of Engineering & Technology, Applied Thermal Engineering, 2011.

. ŽarkoStevanović, GradimirIlić, Design Of Shell-And-Tube Heat Exchangers By Using CFD Technique, University Of Niš, Fr, 2002.

. Ender Ozden, IlkerTari, Shell Side CFD Analysis of A Small Shell And Tube Heat Exchanger, Middle East Technical University, 2010.

. Kern DQ. Process heat transfer. New York, N.Y.: McGraw-Hill; 1950.

. Emerson, W.H., “ Shell-side pressure drop and heat transfer with turbulent flow in segmentally baffled shell-tube heat exchangers”, Int. J. Heat Mass Transfer 6 (1963),

. G. V. Gaddis ES, “Pressure drop on the shell side of shell-and-tube heat exchangers withsegmental baffles,” ChemEng Process, vol. 36, pp. 149–59, 1997.

. S. Kakac and H. Liu, “Heat exchangers: Selection, rating, and thermal performance,” 1998.

. www.wikipedia.com


Full Text: PDF

Refbacks

  • There are currently no refbacks.




Copyright © 2012 - 2021, All rights reserved.| ijitr.com

Creative Commons License
International Journal of Innovative Technology and Research is licensed under a Creative Commons Attribution 3.0 Unported License.Based on a work at IJITR , Permissions beyond the scope of this license may be available at http://creativecommons.org/licenses/by/3.0/deed.en_GB.