Nanoparticle shape effects on thermal-hydraulic performance of boehmite alumina nanofluid in a horizontal double-pipe minichannel heat exchanger

  • Amin ShahsavarEmail author
  • Zeinab Rahimi
  • Hamzeh Salehipour


The aim of the present study is an investigation of the impact of nanoparticle shape on the hydrothermal characteristics of boehmite alumina nanofluid flowing through a horizontal double-pipe minichannel heat exchanger. Boehmite alumina (γ-AlOOH) nanoparticles of different shapes (i.e. cylindrical, brick, blade, platelet, and spherical) are dispersed in a mixture of water/ethylene glycol as the nanofluid. The effects of the Reynolds number and nanoparticle concentration on the heat transfer rate, overall heat transfer coefficient, effectiveness, pressure drop, pumping power, and performance index are numerically analyzed for different nanoparticle shapes. The results reveal that the nanofluids containing cylindrical and platelet shaped nanoparticles have the highest and lowest thermal conductivity, respectively. Additionally, it is found that the highest and lowest viscosity belong to the nanofluids with platelet shaped and spherical nanoparticles, respectively. Furthermore, it is depicted that, among the considered nanoparticle shapes, platelet shaped demonstrates better heat transfer characteristics, while performance index of the heat exchanger for nanofluid containing spherical nanoparticles is higher. Finally, it is inferred from the obtained results that the increase of Reynolds number and nanoparticle concentration result in a higher heat transfer rate, overall heat transfer coefficient, pressure drop, and pumping power and a lower performance index.


Minichannel heat exchanger Nanoparticle shape effect Boehmite alumina nanofluid Pumping power Effectiveness 


Compliance with ethical standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.


  1. 1.
    Hazbehian M, Maddah H, Mohammadiun H, Alizadeh M (2016) Experimental investigation of heat transfer augmentation inside double pipe heat exchanger equipped with reduced width twisted tapes inserts using polymeric nanofluid. Heat Mass Transf 52:2515–2529CrossRefGoogle Scholar
  2. 2.
    Maddah H, Ghasemi N, Keyvani B, Cheraghali R (2016) Experimental and numerical study of nanofluid in heat exchanger fitted by modified twisted tape: exergy analysis and ANN prediction model. Heat Mass Transf 53:1413–1423CrossRefGoogle Scholar
  3. 3.
    Elshazly KM, Sakr RY, Ali RK, Salem MR (2016) Effect of γ-Al2O3/water nanofluid on the thermal performance of shell and coil heat exchanger with different coil torsions. Heat Mass Transf 53:1893–1903CrossRefGoogle Scholar
  4. 4.
    Maddah H, Ghasemi N (2017) Experimental evaluation of heat transfer efficiency of nanofluid in a double pipe heat exchanger and prediction of experimental results using artificial neural networks. Heat Mass Transf 53:3459–3472CrossRefGoogle Scholar
  5. 5.
    Venkitaraj KP, Suresh S, Mathew TA, Bibin BS, Abraham J (2017) An experimental investigation on heat transfer enhancement in the laminar flow of water/TiO2 nanofluid through a tube heat exchanger fitted with modified butterfly inserts. Heat Mass Transf 54:813–829CrossRefGoogle Scholar
  6. 6.
    Ghasemi N, Aghayari R, Maddah H (2018) Optimizing the parameters of heat transmission in a small heat exchanger with spiral tapes cut as triangles and aluminum oxide nanofluid using central composite design method. Heat Mass Transf 54:2113–2130CrossRefGoogle Scholar
  7. 7.
    Shahsavar A, Rahimi Z, Bahiraei M (2018) Optimization of irreversibility and thermal characteristics of a mini heat exchanger operated with a new hybrid nanofluid containing carbon nanotubes decorated with magnetic nanoparticles. Energy Convers Manag 150:37–47CrossRefGoogle Scholar
  8. 8.
    Xie H, Wang J, Xi T, Liu Y (2002) Thermal conductivity of suspensions containing nanosized SiC particles. Int J Thermophys 23:571–580CrossRefGoogle Scholar
  9. 9.
    Xie H, Wang J, Xi T, Liu Y, Ai F, Wu Q (2002) Thermal conductivity enhancement of suspensions containing nanosized alumina particles. J Appl Phys 91:4568CrossRefGoogle Scholar
  10. 10.
    Zhou XF, Gao L (2006) Effective thermal conductivity in nanofluids of nonspherical particles with interfacial thermal resistance: differential effective medium theory. J Appl Phys 100:024913CrossRefGoogle Scholar
  11. 11.
    Fang X, Ding Q, Fan LW, Yu ZT, Xu X, Cheng GH, Hu YC, Cen KF (2013) Thermal conductivity enhancement of ethylene glycol-based suspensions in the presence of silver nanoparticles of various shapes. J Heat Transf 136:034501CrossRefGoogle Scholar
  12. 12.
    Elias MM, Miqdad M, Mahbubul IM, Saidur R, Kamalisarvestani M, Sohel MR, Hepbasli A, Rahim NA, Amalina MA (2013) Effect of nanoparticle shape on the heat transfer and thermodynamic performance of a shell and tube heat exchanger. International Communications in Heat and Mass Transfer 44:93–99CrossRefGoogle Scholar
  13. 13.
    Elias MM, Shahrul IM, Mahbubul IM, Saidur R, Rahim NA (2014) Effect of different nanoparticle shapes on shell and tube heat exchanger using different baffle angles and operated with nanofluid. Int J Heat Mass Transf 70:289–297CrossRefGoogle Scholar
  14. 14.
    Sheikholeslami M, Bhatti MM (2017) Forced convection of nanofluid in presence of constant magnetic field considering shape effects of nanoparticles. Int J Heat Mass Transf 111:1039–1049CrossRefGoogle Scholar
  15. 15.
    Hajabdollahi H, Hajabdollahi Z (2017) Numerical Study on Impact Behavior of Nanoparticle Shapes on the Performance Improvement of Shell and Tube Heat Exchanger, Chemical Engineering Research and Design, In pressGoogle Scholar
  16. 16.
    Mahian O, Kianifar A, Zeinali Heris S, Wongwises S (2014) First and second laws analysis of a minichannel-based solar collector using boehmite alumina nanofluids: effects of nanoparticle shape and tube materials. Int J Heat Mass Transf 78:1166–1176CrossRefGoogle Scholar
  17. 17.
    Arani AAA, Sadripour S, Kermani S (2017) Nanoparticle shape effects on thermal-hydraulic performance of boehmite alumina nanofluids in a sinusoidal-wavy mini-channel with phase shift and variable wavelength. Int J Mech Sci 128-129:550–563CrossRefGoogle Scholar
  18. 18.
    Timofeeva EV, Routbort JL, Singh D (2009) Particle shape effects on thermophysical properties of alumina nanofluids. J Appl Phys 106:014304CrossRefGoogle Scholar
  19. 19.
    Hamilton R, Crosser O (1962) Thermal conductivity of heterogeneous two-component systems. Ind Eng Chem Fundam 1:187–191CrossRefGoogle Scholar
  20. 20.
    Duangthongsuk W, Wongwises S (2010) An experimental study on the heat transfer performance and pressure drop of TiO2-water nanofluids flowing under a turbulent flow regime. Int J Heat Mass Transf 53:334–344CrossRefGoogle Scholar
  21. 21.
    Lienhard JH, Lienhard JH (2002) A Heat Transfer Textbook, second ed., Phlogiston Press,Google Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Mechanical Engineering, Faculty of EnergyKermanshah University of TechnologyKermanshahIran
  2. 2.Department of Mechanical EngineeringIlam UniversityIlam 69315-516Iran

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