Document Type : Research Paper


1 Department of Chemical Engineering, Faculty of Engineering, University of Al-Qadisiyah, Al-Diwaniya 58002, Iraq

2 School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK



The aim of this research was to increase the engine car efficiency by adding an innovative material called hybrid MWCNT/Al2O3 nanofluids. A volume ratio instance for investigations is 0.05 MWCNT mixed with 0.05 Al2O3 in distilled water (DW). The experimental temperature setup was in the range from 50 °C to 70 °C. The results demonstrate that as temperatures increase, specific heat and thermal conductivity increase significantly, while viscosity and density gradually decrease. At 70 °C, the highest thermal conductivity of 1.143 W/m.K was achieved in the presence of hybrid MWCNT/Al2O3 nanofluids. Furthermore, it was found that the correlation coefficient for thermal conductivity is 97.06% R2.


  • Protocol, United Nations framework convention on climate change, Kyoto Protocol, Kyoto, 19(8) (1997) 1-21.
  • Yoo, K. Simpson, M. Bell, S. Majkowski, An Engine Coolant Temperature Model and Application for Cooling System Diagnosis, SAE Transactions, 109 (2000) 950-960.
  • T. Yaw, S. Koh, M. Sandhya, K. Kadirgama, S.K. Tiong, D. Ramasamy, K. Sudhakar, M. Samykano, F. Benedict, C.H. Tan, Heat Transfer Enhancement by Hybrid Nano Additives—Graphene Nanoplatelets/Cellulose Nanocrystal for the Automobile Cooling System (Radiator), Nanomaterials 13(5) (2023) 808.
  • O. Giwa, M. Sharifpur, J.P. Meyer, Experimental study of thermo-convection performance of hybrid nanofluids of Al2O3-MWCNT/water in a differentially heated square cavity, International Journal of Heat and Mass Transfer 148 (2020) 119072.

  • Yasir, A. Hafeez, M. Khan, Thermal conductivity performance in hybrid (SWCNTs-CuO/Ehylene glycol) nanofluid flow: Dual solutions, Ain Shams Engineering Journal 13(5) (2022) 101703.

  • Arif, P. Kumam, W. Kumam, Z. Mostafa, Heat transfer analysis of radiator using different shaped nanoparticles water-based ternary hybrid nanofluid with applications: A fractional model, Case Studies in Thermal Engineering 31 (2022) 101837.
  • K. Mandal, N. Biswas, N.K. Manna, D.K. Gayen, R.S.R. Gorla, A.J. Chamkha, Thermo-fluidic transport process in a novel M-shaped cavity packed with non-Darcian porous medium and hybrid nanofluid: Application of artificial neural network (ANN), Physics of Fluids 34(3) (2022) 033608.
  • A. Zainal, R. Nazar, K. Naganthran, I. Pop, The impact of thermal radiation on Maxwell hybrid nanofluids in the stagnation region, Nanomaterials 12(7) (2022) 1109.
  • S. Kumar, V. Vasu, Nanofluids Application for Cutting Fluids, Advances in Sustainable Machining and Manufacturing Processes, CRC Press 2022, p. 29.
  • Javaid, A. Haleem, R.P. Singh, R. Suman, E.S. Gonzalez, Understanding the adoption of Industry 4.0 technologies in improving environmental sustainability, Sustainable Operations and Computers 3 (2022) 203-217.
  • W. Xian, N.A.C. Sidik, R. Saidur, Hybrid nanocoolant for enhanced heat transfer performance in vehicle cooling system, International Communications in Heat and Mass Transfer 133 (2022) 105922.

  • Nasef, S. Nada, H. Hassan, Integrative passive and active cooling system using PCM and nanofluid for thermal regulation of concentrated photovoltaic solar cells, Energy Conversion and Management 199 (2019) 112065.
  • Huang, X. Xiao, H. Kang, J. Lv, R. Zeng, J. Shen, Thermal management of polymer electrolyte membrane fuel cells: A critical review of heat transfer mechanisms, cooling approaches, and advanced cooling techniques analysis, Energy Conversion and Management 254 (2022) 115221.
  • A.C. Sidik, M.N.A.W.M. Yazid, R. Mamat, A review on the application of nanofluids in vehicle engine cooling system, International Communications in Heat Mass Transfer, 68 (2015) 85-90.
  • Satar, H. I. Dawood, A comparative study on stability and thermal properties of various nanofluids, Al-Qadisiyah Journal for Engineering Sciences, 14(1) (2021) 41-46.
  • O. Giwa, M. Sharifpur, J.P. Meyer, Experimental study of thermo-convection performance of hybrid nanofluids of Al2O3-MWCNT/water in a differentially heated square cavity, International Journal of Heat and Mass Transfer 148 (2020) 119072.
  • S. Chougule, S.K. Sahu, Comparative study of cooling performance of automobile radiator using Al2O3-water and carbon nanotube-water nanofluid, Journal of Nanotechnology in Engineering Medicine, 5(1) (2014) 010901.
  • A. Cengel, M.A. Boles, M. Kanoğlu, Thermodynamics: an engineering approach, Nine Edition ed., McGraw-hill, New York, 2019.
  • [1] R.J. Issa, A Review on Thermophysical Properties and Nusselt Number Behavior of Al 2 O 3 Nanofluids in Heat Exchangers, Journal of Thermal Science 30 (2021) 418-431.
  • Estellé, S. Halelfadl, M. Thierry, Thermal conductivity of CNT water based nanofluids: Experimental trends and models overview, Journal of Thermal Engineering, 1 (2)(2015) 381-390.
  • Du, D. Jiang, Y. Wang, Numerical investigation of the effect of nanoparticle diameter and sphericity on the thermal performance of geothermal heat exchanger using nanofluid as heat transfer fluid, Energies, 13 (7)(2020) 1653.
  • -M. Nieh, T.-P. Teng, C.-C. Yu, Enhanced heat dissipation of a radiator using oxide nano-coolant, International Journal of Thermal Sciences, 77 (2014) 252-261.
  • R. Ray, D.K. Das, Superior performance of nanofluids in an automotive radiator, Journal of Thermal Science Engineering Applications, 6 (4)(2014) 041002.
  • K. Mannekote, S.V. Kailas, K. Venkatesh, N. Kathyayini, Environmentally friendly functional fluids from renewable and sustainable sources-A review, Renewable sustainable energy reviews, 81 (2018) 1787-1801.
  • Kumar, J. Sarkar, Particle ratio optimization of Al2O3-MWCNT hybrid nanofluid in minichannel heat sink for best hydrothermal performance, Applied Thermal Engineering 165 (2020) 114546.

  • Said, M. Sajid, R. Saidur, G. Mahdiraji, N. Rahim, Evaluating the optical properties of TiO2 nanofluid for a direct absorption solar collector, Numerical Heat Transfer, Part A: Applications, 67 (9)(2015) 1010-1027.
  • Gupta, V. Singh, S. Kumar, S. Kumar, N. Dilbaghi, Z. Said, Up to date review on the synthesis and thermophysical properties of hybrid nanofluids, Journal of cleaner production, 190 (2018) 169-192.
  • Elias, I.M. Mahbubul, R. Saidur, M. Sohel, I. Shahrul, S. Khaleduzzaman, S. Sadeghipour, Experimental investigation on the thermo-physical properties of Al2O3 nanoparticles suspended in car radiator coolant, International Communications in Heat Mass Transfer, 54 (2014) 48-53.
  • -P. Teng, C.-C. Yu, Heat dissipation performance of MWCNTs nano-coolant for vehicle, Experimental Thermal Fluid Science, 49 (2013) 22-30.
  • Gupta, V. Singh, R. Kumar, Z. Said, A review on thermophysical properties of nanofluids and heat transfer applications, Renewable Sustainable Energy Reviews, 74 (2017) 638-670.