IJBTT

Design and Analysis of a Heat Exchanger with Helical Baffles by using CFD

	International Journal of Engineering Trends and Technology (IJETT)
	© 2017 by IJETT Journal
	Volume-48 Number-7
	Year of Publication : 2017
	Authors : Basawaraj S. Hasu, Dr.G.V.Satynarayana Rao
	DOI :  10.14445/22315381/IJETT-V48P261

Citation 

Basawaraj S. Hasu, Dr.G.V.Satynarayana Rao "Design and Analysis of a Heat Exchanger with Helical Baffles by using CFD", International Journal of Engineering Trends and Technology (IJETT), V48(7),350-353 June 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
Heat exchangers are used extensively in engineering applications. In present day shell and tube heat exchanger are the most common type heat exchanger widely used used in cars, in planes, in boilers, in ships, in refrigeration systems, in air conditioning systems, in power stations, in oil refineries, in space applications, in renewable energy applications because it suits high pressure applications. The performance of heat exchangers has always been an important part to the lifecycle and operation. Whether developing a new heat exchanger or optimizing the design of an existing one, understanding the coupled fluid flow and heat transfer physics, or the “conjugate heat transfer” process, associated with heat exchanger operation, is essential to provide better cooling performance. The process in solving simulation consists of modeling and meshing the basic geometry of shell and tube heat exchanger using CFD package ANSYS 15.0v.The most important goal of the conjugate heat transfer analysis is to identify the heat transfer characteristics.The objective of the paper is design of shell and tube heat exchanger with helical baffle and study the flow and temperature field inside the shell using ANSYS software tools. The heat exchanger contains 7 tubes and 600 mm length shell and diameter of 90 mm. The helix angle of helical baffle will be varied from 0 to 200mm. In simulation will show how the pressures vary in shell due to different helix angle and flow rate. The flow pattern in the shell side of the heat exchanger with continuous helical baffles was forced to be rotational and helical 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. Based on these results, design iterations can be easily implemented which can predict the influence of design parameters such as tube diameter, number of loops, loop distribution, etc. Ultimately, an optimal fluid flow.

 References

[1] A Gopichand, Prof.A.V.N.L. Sharma, G. Vijay kumar, A. Srividya, “Thermal analysis of shell and tube type heat exchanger using MATLAB and FLOEFD software. ”, Volume 1 Issue :3, ,pp 279-281.
[2] A.O. Adelaja, S.J. Ojolo and M.G. Sobamowo, “Computer Aided Analysis of Thermal and Mechanical Design of Shell and Tube Heat Exchangers”, Advanced Materials Vol. 367 (2012), pp731-737, Trans Tech Publications Switzerland.
[3] B Jayachandriah1, K. Rajsekhar, “Thermal Computer Aided Analysis of Thermal and Mechanical design of shell and tube exchangers,” Advanced materials vol. 367(2012) pp 731-73, Trans Tech publications, switzerland.
[4] Dutta B.K. “Heat Transfer-Principles and Applications”, PHI Pvt. Ltd., New Delhi, 1st ed. 2006.
[5] D. Q. Kern, “Process Heat Transfer”, McGraw-Hill Book Company, Int. ed. 1965.
[6] Ebieto, C.E. and Eke G.B., “Performance Analysis of Shell and Tube Heat Exchangers using Miscible System: A case study”, Journal of Emerging Trends in Engineering and Applied Sciences,2012 3 (5), pp. 899- 903.al
[7] Indian Standard (IS: 4503-1967): Specification for Shell and Tube Type Heat Exchangers, BIS 2007, New Delhi.
[8] Rajagapal Thundil Karuppa Raj, Srikanth Ganne, “Shell side numerical analysis of a shell and tube heat exchanger considering the effect of baffle inclination angle on a fluid flow”, Thundil Karuppa Raj, R., et al: Shell side numerical analysis of shell and tube heat exchangers, Thermal science: Year 2012, Vol.16, No.4, pp 1165-1174.
[9] R. K. Sinnott, Coulson & Richardson?s Chemical Engineering: “Chemical Engineering Design” (volume 6), Butterworth-Heinemann, 3rd ed. 1999.
[10] S. Noie Baghban, M. Moghiman and E. Salehi, “Thermal Analysis of shell side flow of shell and tube type heat exchanger using experimental and theoretical methods ”, Institute for Scientific Research, University of Guanajuato Lascurain de Retana No. 5, 36000 Guanajuato, Gto, México.
[11] Usman UR Rehman, “Heat transfer optimization of shell and tube heat exchanger through CFD studies ”, Master thesis in innovative and sustainable Chemical engineering from Chalmers University of Technology.
[12] Yusuf Ali Kara, Ozbilen Guraras, “A computer program for designing of shell and tube heat exchanger”, Applied Thermal Engineering 24(2004) 1797-1805.

Keywords
Heat exchangers, helical baffles, heat exchanger feasibilities.