Investigation of the Thermophysical Properties of AlN+ZnO/Deionized Water Hybrid Nanofluid

Abstract

Nanofluids are the novel type heat transfer fluids since they provide undeniable increments in heat transfer characteristics. Thermophysical properties of nanofluids have a great importance on determination of heat transfer capabilities of them. Even though these suspensions initially have been prepared by using one type nanoparticle, a new nanofluid preparation process has arisen nowadays in which at least two different nanoparticles are used. By this study, such thermophysical properties of AlN+ZnO/deionized water hybrid nanofluid as density, heat capacity, thermal conductivity, and viscosity have been determined by using the theoretical correlations available and validated in literature. Besides, another important property, wetting capability has also been studied. The calculations have been performed not merely for hybrid nanofluid, both also for its one-component (AlN/deionized water and ZnO/deionized water) containing types. The mixing rate of the nanoparticles is (50:50) and final volume fraction of the hybrid nanofluid is 2.0%. The findings show that hybrid nanofluids are more stable than their unitary ones and can be enhanced the performance when they are used as working fluid in thermal systems.

Keywords

• Hybrid nanofluid
• Thermophysical properties
• AlN
• ZnO

References

1. Gürü, M., Sözen, A., Karakaya, U., Çiftçi, E. “Influences of bentonite-deionized water nanofluid utilization at different concentrations on heat pipe performance: An experimental study”, Applied Thermal Engineering 2019: 148; 632-640.
2. Khanlari, A., Yılmaz Aydın, D., Sözen, A., Gürü, M., Variyenli, H. İ. “Investigation of the influences of kaolin-deionized water nanofluid on the thermal behavior of concentric type heat exchanger”, Heat and Mass Transfer 2020: 56; 1453–1462.
3. Sözen, A., Variyenli H. İ., Özdemir, M. B., Gürü, M., Aytaç, I. “Heat transfer enhancement using alumina and fly ash nanofluids in parallel and cross-flow concentric tube heat exchangers”, Journal of the Energy Institute 2016: 89; 414–424.
4. Kumar, V., Tiwari, A.K., Kumar Ghosh, S. “Effect of chevron angle on heat transfer performance in plate heat exchanger using ZnO/water nanofluid”, Energy Conversion and Management 2016: 118; 142–154.
5. Kiliç, F., Menlik, T., Sözen, A. “Effect of titanium dioxide/water nanofluid use on thermal performance of the flat plate solar collector”, Solar Energy 2018: 164; 101-108.
6. Sharafeldin, M. A., Gróf, G. “Efficiency of evacuated tube solar collector using WO3/Water nanofluid”, Renewable Energy 2019: 134; 453-460.
7. Martin, K., Boran, K. “Isı borulu havadan havaya ısı değiştiricisinde CuO+Fe/Saf su ve CuO/Saf su nano akışkanlarının kullanımının ısıl performansa etkisinin incelenmesi”, Politeknik Dergisi 2020: (article in press).
8. Sözen, A., Öztürk, A., Özalp, M., Çiftçi, E. “Influences of alumina and fly ash nanofluid usage on the performance of recuperator including heat pipe bundle”, International Journal of Environmental Science and Technology 2019: 16; 5095–5100.

9. Özdemir, M. B., Ergun, M. E. “Experimental and numerical investigations of thermal performance of Al2O3/water nanofluid for a combi boiler with double heat exchangers”, International Journal of Numerical Methods for Heat & Fluid Flow 2019: 29; 1300-1321.
10. Khanlari, A., Sözen, A., Variyenli, H. İ. “Simulation and experimental analysis of heat transfer characteristics in the plate type heat exchangers using TiO2/water nanofluid”, International Journal of Numerical Methods for Heat & Fluid Flow 2019: 29; 1343-1362.
11. Martin, K., Sözen, A., Çiftçi, E., Ali, H. M. “An experimental investigation on aqueous Fe–CuO hybrid nanofluid usage in a plain heat pipe”, International Journal of Thermophysics 2020: 41; 135.
12. Pak, B.C., Cho, Y.I. “Hydrodynamic and heat transfer study of dispersed fluids with submicron metallic oxide particles”, Experimental Heat Transfer 1998: 11(2); 151-170.
13. Ali, H.M. “Hybrid nanofluids for convection heat transfer”, Academic Press, London, UK, 2020.
14. O’Hanley, H., Buongiorno, J., McKrell,T., Hu, L.W. “Measurement and model validation of nanofluid specific heat capacity with differential scanning calorimetry”, Advances in Mechanical Engineering 2012: 4; 181079.
15. Maxwell, J. C. “A treatise on electricity and magnetism”, Clarendon Press, 1881.