Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Improving heat transfer in the shell & tube heat exchanger with the non-circular cross section tubes

Authors
MOHAMMADREZA SAFFARIAN 1
MOHAMMADREZA Fazelpour 2
Mehrzad Shams 3
1 Ph.D. Student, Mech. Eng., Department of Mech. Eng., Faculty of Engineering, South Tehran Branch, Islamic Azad University
2 Assoc. Prof., Mech. Eng., Department of Mech. Eng., Faculty of Engineering, South Tehran Branch, Islamic Azad University
3 Assoc. Prof., Mech. Eng., Faculty of Mech. Eng., K.N. Toosi University of Technology
10.30506/ijmep.2022.523281.1768
Abstract
One of the most common used heat exchangers is the shell & tube heat exchanger. It has many usages in the oil and gas, petrochemical and pharmaceutical industries. The heat exchanger is the best which has the highest heat transfer rate with the lowest energy consumption. In this research, we want to increase heat transfer and reduce pressure drop by changing the cross section of tubes. We used tubes with different cross section; circular , ellipse with 0° attack angle and ellipse with 90°attack angle. We study pressure drop and heat transfer coefficient for Re between 3000 to 15000. Then two combined models are examined. Case 1: Circular tubes in the center of the shell and elliptical tubes with 90° attack angle around the shell, case 2: Elliptical tubes with 90° attack angle in the center of the shell and circular tubes around the shell. Which indicates an increase in heat transfer in elliptical tubes, especially elliptical tubes with 90° attack angle compared to the circular, while circular tubes have the lowest pressure drop. However the heat transfer in the case 1 (STHE-CT&ET90°) and the case 2 (STHE-ET90°&CT) increase by 10% and 3% compared to the STHE-CT respectively, it caused increasing the pressure drop.
Keywords
Shell &
Tube Heat Exchanger
Elliptical Tubes
Circular Tubes
Heat Transfer
Pressure Drop

Subjects

[1] Kapale, U.C., and Chand, S., "Modeling for Shell-side Pressure Drop for Liquid Flow in Shell-and-tube Heat Exchanger", International Journal of Heat and Mass Transfer, Vol. 49, No. 3-4, pp. 601-610, (2006).
[2] Thulukkanam, K., "Heat Exchanger Design Handbook", 2rd Edition, CRC Press, London, pp. 125, (2013).
[3] Gay, B., Mackley, N., and Jenkins, J., "Shell-side Heat Transfer in Baffled Cylindrical Shell-and-tube Exchangers—An Electrochemical Mass-transfer Modelling Technique", International Journal of Heat and Mass Transfer, Vol. 19, No. 9, pp. 995-1002, (1976).
[4] Gaddis, E.S., and Gnielinski, V., "Pressure Drop on the Shell Side of Shell-and-tube Heat Exchangers with Segmental Baffles", Chemical Engineering and Processing: Process Intensification, Vol. 36, No. 2, pp. 149-159, (1997).
[5] Zhang, J.-F., Li, B., Huang, W.-J., Lei, Y.-G., He, Y.-L., and Tao, W.-Q., "Experimental Performance Comparison of Shell-side Heat Transfer for Shell-and-tube Heat Exchangers with Middle-overlapped Helical Baffles and Segmental Baffles", Chemical Engineering Science, Vol. 64, No. 8, pp. 1643-1653, (2009).
[6] Ghadimi, A., Saidur, R., and Metselaar, H., "A Review of Nanofluid Stability Properties and Characterization in Stationary Conditions", International Journal of Heat and Mass Transfer, Vol. 54, No. 17-18, pp. 4051-4068 , (2011).
[7] Khanafer, K., and Vafai, K., "A Critical Synthesis of Thermophysical Characteristics of Nanofluids", International Journal of Heat and Mass Transfer, Vol. 54, No. 19-20, pp. 4410-4428, (2011).
[8] Mintsa, H.A., Roy, G., Nguyen, C.T., and Doucet, D., "New Temperature Dependent Thermal Conductivity Data for Water-based Nanofluids", International Journal of Thermal Sciences, Vol. 48, No. 2, pp. 363-371, (2009).
[9] Murshed, S., Leong, K., and Yang, C., "Thermophysical and Electrokinetic Properties of Nanofluids–A Critical Review", Applied Thermal Engineering, Vol. 28, No. 17-18, pp. 2109-2125, (2008).
[10] Yu, W., Xie, H., Wang, X., and Wang, X., "Significant Thermal Conductivity Enhancement for Nanofluids Containing Graphene Nanosheets", Physics Letters A, Vol. 375, No. 10, pp. 1323-1328, (2011).
[11] Eastman, J.A., Choi, S., Li, S., Yu, W., and Thompson, L., "Anomalously Increased Effective Thermal Conductivities of Ethylene Glycol-based Nanofluids Containing Copper Nanoparticles", Applied Physics Letters, Vol. 78, No. 6, pp. 718-720, (2001).
[12] Duangthongsuk, W., and Wongwises, S., "Measurement of Temperature-dependent Thermal Conductivity and Viscosity of Tio2-water Nanofluids", Experimental Thermal and Fluid Science, Vol. 33, No. 4, pp. 706-714, (2009).
[13] Ibrahim, T.A., and Gomaa, A., "Thermal Performance Criteria of Elliptic Tube Bundle in Crossflow", International Journal of Thermal Sciences, Vol. 48, No. 11, pp. 2148-2158, (2009).
[14] He, Z., Fang, X., Zhang, Z., and Gao, X., "Numerical Investigation on Performance Comparison of Non-newtonian Fluid Flow in Vertical Heat Exchangers Combined Helical Baffle with Elliptic and Circular Tubes", Applied Thermal Engineering, Vol. 100, pp. 84-97, (2016).
[15] Zaversky, F., Sánchez, M., and Astrain, D., "Object-oriented Modeling for the Transient Response Simulation of Multi-pass Shell-and-tube Heat Exchangers as Applied in Active Indirect Thermal Energy Storage Systems for Concentrated Solar Power", Energy, Vol. 65, pp. 647-664, (2014).
[16] Horvat, A., Leskovar, M., and Mavko, B., "Comparison of Heat Transfer Conditions in Tube Bundle Cross-flow for Different Tube Shapes", International Journal of Heat and Mass Transfer, Vol. 49, No. 5-6, pp. 1027-1038, (2006).
[17] Bonilla, J., de la Calle, A., Rodríguez-García, M.M., Roca, L., and Valenzuela, L., "Study on Shell-and-tube Heat Exchanger Models with Different Degree of Complexity for Process Simulation and Control Design", Applied Thermal Engineering, Vol. 124, pp. 1425-1440, (2017).
[18] Skoglund, T., Årzén, K.-E., and Dejmek, P., "Dynamic Object-oriented Heat Exchanger Models for Simulation of Fluid Property Transitions", International Journal of Heat and Mass Transfer, Vol. 49, No. 13-14, pp. 2291-2303, (2006).
[19] Rocha, L., Saboya, F., and Vargas, J., "A Comparative Study of Elliptical and Circular Sections in One-and Two-row Tubes and Plate Fin Heat Exchangers", International Journal of Heat and Fluid Flow, Vol. 18, No. 2, pp. 247-252, (1997).
[20] Matos, R., Vargas, J., Laursen, T., and Saboya, F., "Optimization Study and Heat Transfer Comparison of Staggered Circular and Elliptic Tubes in Forced Convection", International Journal of Heat and Mass Transfer, Vol. 44, No. 20, pp. 3953-3961, (2001).
[21] Matos, R., Laursen, T., Vargas, J., and Bejan, A., "Three-dimensional Optimization of Staggered Finned Circular and Elliptic Tubes in Forced Convection", International Journal of Thermal Sciences, Vol. 43, No. 5, pp. 477-487, (2004).
[22] Matos, R., Vargas, J., Laursen, T., and Bejan, A., "Optimally Staggered Finned Circular and Elliptic Tubes in Forced Convection", International Journal of Heat and Mass Transfer, Vol. 47, No. 6-7, pp. 1347-1359, (2004).
[23] Bouris, D., Papadakis, G., and Bergeles, G., "Numerical Evaluation of Alternate Tube Configurations for Particle Deposition Rate Reduction in Heat Exchanger Tube Bundles", International Journal of Heat and Fluid Flow, Vol. 22, No. 5, pp. 525-536, (2001).
[24] Nouri-Borujerdi, A., and Lavasani, A.M., "Pressure Loss and Heat Transfer Characterization of a Cam-shaped Cylinder at Different Orientations", Journal of Heat Transfer, Vol. 130, No. 12, pp. 124503, (2008).
[25] Nouri-Borujerdi, A., and Lavasani, A., "Experimental Study of Forced Convection Heat Transfer from a Cam Shaped Tube in Cross Flows", International Journal of Heat and Mass Transfer, Vol. 50, No. 13-14, pp. 2605-2611, (2007).
[26] Moawed, M., "Experimental Study of Forced Convection from Helical Coiled Tubes with Different Parameters", Energy Conversion and Management, Vol. 52, No. 2, pp. 1150-1156, (2011).
[27] Multiphysics, C., "Comsol Multiphysics User's Guide (Version 4.3 A)", COMSOL AB, Stockholm, pp. 39-40, (2012).
[28] Costa, A.L., and Queiroz, E.M., "Design Optimization of Shell-and-tube Heat Exchangers", Applied Thermal Engineering, Vol. 28, No. 14-15, pp. 1798-1805, (2008).
[29] Pepper, D.W., and Heinrich, J.C., "The Finite Element Method: Basic Concepts and Applications", 3rd Edition, Taylor and Francis, Boca Raton, pp. 130-146, (2005).
[30] Zimmerman, W.B., "Multiphysics Modeling with Finite Element Methods", World Scientific Publishing Company, England, pp. 150-176, (2006).
[31] Lun Cen, Z., Gang Zhao, J., and Xian Shen, B., "A Comparative Study of Omega RSM and RNG K–epsilon Model for the Numerical Simulation of a Hydrocyclone", Iranian Journal of Chemistry and Chemical Engineering (IJCCE), Vol. 33, No. 3, pp. 53-61, (2014).
[32] El Maakoul, A., Laknizi, A., Saadeddine, S., El Metouia, M., Zaite, A., Meziane, M., Abdellah, A.B., "Numerical Comparison of Shell-side Performance for Shell and Tube Heat Exchangers with Trefoil-hole, Helical and Segmental Baffles", Applied Thermal Engineering, Vol. 109, pp. 175-185, (2016) .
[33] Azar, R.T., Khalilarya, S., and Jafarmadar, S., "Tube Bundle Replacement for Segmental and Helical Shell and Tube Heat Exchangers: Experimental Test and Economic Analysis", Applied Thermal Engineering, Vol. 62, No. 2, pp. 622-632, (2014).
[34] Kakac, S., Liu, H., and Pramuanjaroenkij, A., "Heat Exchangers: Selection, Rating, and Thermal Design", 3rd edition, CRC press, Florida, pp. 45-78, (2012).

  • Receive Date 14 February 2021
  • Revise Date 27 January 2022
  • Accept Date 01 February 2022