Computational Fluid Dynamics Modelling and Analysis of Heat Transfer in Multichannel Dimple Plate Heat Exchanger

Document Type : Research Article

Authors

1 Department of Chemical Engineering, School of Engineering, Cochin University of Science and Technology, Kochi, Kerala, INDIA

2 Department of Chemical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, INDIA

3 Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, INDIA

Abstract

In the present study, Computational Fluid Dynamics is used for heat transfer studies in the dimple, and flat plate heat exchangers. By employing water as a working medium (fluid), the same and different flow analyses were numerically studied. SOLID WORKS 2018 software was used for the study. The study primarily investigated the effect of the flow rate of hot fluid on the overall heat transfer coefficient. The study also analyzed the influence of hot fluid’s Reynolds number on cold fluid’s Nusselt number. It was observed that an increase in the mass flow rate of the hot fluid from 0.016 to 0.067 kg/s resulted in an increase in the heat transfer coefficient from 65 to 298 W/(m2.K) for the dimple plate heat exchanger (DPHE). Meanwhile, an increase in the Reynolds number of the hot fluid (from 200 to 1000), induced an increase in the Nusselt number of the cold fluid from 1.9 to 8.7 for DPHE. A correlation was developed to calculate the Nusselt number for the same flow analysis of the flat plate heat exchanger (FPHE). The study also compared the performance of the DPHE with that of the FPHE. The results of the same flow analysis indicated that the DPHE exhibited a Nusselt number value 39% greater than the FPHE at the highest mass flow rate of 0.067 kg/s, while in different flow analysis, the DPHE demonstrated a Nusselt number value 41% greater than the FPHE at the highest mass flow rate of 0.067 kg/s.

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References

[1] Versteeg H.K., Malalasekera W., An Introduction to Computational Fluid Dynamics (1995).
[2] Luki A.A., Ganesan M., Flow Analysis and Characteristics Comparison of Double Pipe Heat Exchanger Using Enhanced Tubes, IOSR J. Mech. Civ. Eng., 7: 16–21 (2014).
[3] Saleh M.A., Abdel-Hameed H.E., Flow and Heat Transfer Performance of a Dimpled-Inter Surface Heat Exchanger-an Experimental/Numerical Study, Appl. Therm. Eng., 21: (2002).
[4] Oluyale J.O., Omolayo P.M., Ayoade A.A., Adedayo I.F., Experimental Investigation of Flow and Heat Transfer in a Channel with Dimpled Plate, J. Phys. Conf. Ser., 1378: 1–13 (2019).
[5] Zhang L., Xiong W., Zheng J., Liang Z., S. Xie S., Numerical Analysis of Heat Transfer Enhancement and Flow Characteristics Inside Cross-Combined Ellipsoidal Dimple Tubes, Case Stud. Therm. Eng., 25: 1–12 (2021).
[6] Lotfi B., Sundén B., Thermo-Hydraulic Performance Enhancement of Finned Elliptical Tube Heat Exchangers by Utilizing Innovative Dimple Turbulators, Heat Transf. Eng., 41: 1117–1142 (2020).
[7] Firoozi A., Majidi S., Ameri M., A Numerical Assessment on Heat Transfer and Flow Characteristics of Nanofluid in Tubes Enhanced With a Variety of Dimple Configurations, Therm. Sci. Eng. Prog., 19:  1–18 (2020).
[8] Sabir R., Khan M.M., Sheikh N.A., Ul-Ahad I., Brabazon D., Assessment of Thermo-Hydraulic Performance of Inward Dimpled Tubes with Variation in Angular Orientations, Appl. Therm. Eng., 170:
[9] Babu J.S., Sellamuthu P., Analysis of Heat Transfer and Fluid Flow Characteristics of Concentric Tube Heat Exchanger with Dimpled Tube, J. Xi’an Univ. Agric. Technol., 12: 508–516 (2020).
[10] Piper M., Zibart A., Djakow E., Springer R., Homberg W., Kenig E.Y., Heat Transfer Enhancement in Pillow-Plate Heat Exchangers with Dimpled Surfaces: A Numerical Study, Appl. Therm. Eng., 153: 142–146 (2019).
[11] Yoon H.S., Park S.H., Choi C., Ha M.Y., Numerical Study on Characteristics of Flow and Heat Transfer in a Cooling Passage with a Tear-Drop Dimple Surface, Int. J. Therm. Sci., 89: 121–135 (2015).
[12] Shokouhmand H., Esmaeili M.A., Vahidkhah K., Numerical Simulation of Conjugated Heat Transfer Characteristics of Laminar Air Flows in Parallel-Plate Dimpled Channels, Int. J. Mech. Mechatronics. Eng., 5: 7–14 (2011).
[13] Ligrani P.M., Mahmood G.I., Harrison J.L., Clayton C.M., Nelson D.L., Flow Structure and Local Nusselt Number Variations in a Channel with Dimples and Protrusions on Opposite Walls, Int. J. Heat Mass Transf., 44: 4413–4425 (2001).
[14] Chimres N., Wang C., Wongwises S., Optimal Design of the Sermi-Dimple Vortex Generator in the Fin and Tube Heat Exchanger, Int. J. Heat Mass Transf., 120: 1173-1186 (2018).
[15] Vorayos N., Katkhaw N., Kiatsiriroat T., Nuntaphan A., Heat Transfer Behavior of Flat Plate Having Spherical Dimpled Surfaces, Case Stud. Therm. Eng., 8: 370–377 (2016).
[16] Patel I.H., Borse S.L., Experimental Investigation of Heat Transfer Enhancement over the Dimpled Surface, Int. J. Eng. Sci. Technol., 4: 3666–3672 (2012).
[17] Katkhaw N., Vorayos N., Kiatsiriroat T., Khunatorn Y., Bunturat D., Nuntaphan A., Heat Transfer Behavior of Flat Plate Having 450 Ellipsoidal Dimpled Surfaces, Case Stud. Therm. Eng., 2: 67–74 (2014).
[18] Elyyan M.A., Rozati A., Tafti D.K., Investigation of Dimpled Fins for Heat Transfer Enhancement in Compact Heat Exchangers, Int. J. Heat Mass Transf., 51: 2950–2966 (2008).
[19] Abraham J., Maki, R., Hydrodynamics of Laminar Flow Through Dimpled Pipes, MOJ Civ. Eng., 4: 150–154 (2018).
[20] Pisal, H.C., Ranaware, A.A.: Heat Transfer Enhancement by Using Dimpled Surface, IOSR J. Mech. Civ. Eng., 6: 7–15 (2013).
[21] Nascimento I.P., Garcia E.C., Heat Transfer Performance Enhancement in Compact Heat Exchangers by Using Shallow Square Dimples in Flat Tubes, Appl. Therm. Eng., 96: 659–670 (2016).
[22] Shin S., Lee K.S., Park S.D., Kwak J.S., Measurement of the Heat Transfer Coefficient in the Dimpled Channel: Effects of Dimple Arrangement and Channel Height, J. Mech. Sci. Technol., 23: 624–630 (2009).
[23] Sobachkin A., Dumnov G., Numerical Basis of CAD-Embedded CFD, In NAFEMS World Congress, 9-12 (2013).
[24] Soman D.P., Karthika S., Kalaichelvi P., Radhakrishnan T.K., Experimental Study of Turbulent Forced Convection Heat Transfer and Friction Factor in Dimpled Plate Heat Exchanger, Appl. Therm. Eng., 162: 114254 (2019).
[25] Mahmood G.I., Hill M.L., Nelson D.L., Ligrani P.M., Moon H.K., Glezer B., Local Heat Transfer and Flow Structure on and Above a Dimpled Surface in a Channel, J. Turbomach., 123: 115–123 (2001).
[26] Ahmed H., Qureshi S.R., Qureshi N., CFD and Heat Transfer Analysis on Dimpled Plate Heat Exchangers.
[27] Afanasyev V.N., Chudnovsky Y.P., Leontiev A.I., Roganov P.S., Turbulent Flow Friction and Heat Transfer Characteristics For Spherical Cavities on a Flat Plate, Exp. Therm. Fluid Sci., 7: 1–8 (1993).
[28] Won S.Y., Ligrani P.M., Flow Characteristics Along and Above Dimpled Surfaces with Three Different Dimple Depths within A Channel, J. Mech. Sci. Technol., 21: 1901–1909 (2007).
[29] Moon H.K., O’Connell T., Sharma R., Heat Transfer Enhancement Using a Convex-Patterned Surface, J. Turbomach., 125: 274–280 (2003).

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