The Effect of Al₂O₃ Nanofluid Concentration and Fluid Flow Rate on Vehicle Radiator Heat Transfer Performance
DOI:
https://doi.org/10.70822/evrmata.vi.116Keywords:
Al₂O₃ Nanofluid, Heat Transfer Performance, Fluid Flow Rate,NanoparticlesAbstract
This study of the limitation of conventional coolant fluids, particularly ethylene glycol, in effectively transferring heat within vehicle radiators. The objective is to analyze the combined effects of Al₂O₃ nanofluid concentration and fluid flow rate on radiator heat transfer performance. The experimental method involved preparing nanofluids with varying concentrations of Al₂O₃ (0.2%, 0.4%, 0.6%) and conducting tests with fluid flow rates of 4, 8, and 12 LPM. The results indicate that increasing the Al₂O₃ concentration significantly enhances the heat transfer rate, with the highest performance achieved at a concentration of 0.6%. Additionally, increasing the flow rate from 4 LPM to 12 LPM further improves heat transfer by reducing the thermal boundary layer and increasing turbulence. The combination of 0.6% Al₂O₃ nanofluid and a 12 LPM flow rate showed the most significant improvement in heat transfer efficiency. In conclusion, the study demonstrates that both higher Al₂O₃ concentrations and higher flow rates synergistically enhance radiator performance, offering a potential solution for improving automotive cooling systems without requiring major radiator design modifications
References
S. K. Das, N. Putra, P. Thiesen, and W. Roetzel, “Temperature dependence of thermal conductivity enhancement for nanofluids,” J. Heat Transfer, vol. 125, pp. 567–574, 2003.
K. Davis, “Material Review: Alumina (Al₂O₃),” School of Doctoral Studies (European Union) Journal, pp. 109–114, 2010.
D. Irawan, B. Kristiawan, and E. Prasetyo, “Studi eksperimental perpindahan kalor konveksi fluida nano Al₂O₃/ethylene glycol pada circular tube di bawah kondisi fluks kalor konstan,” Program Sarjana, Jurusan Teknik Mesin, Universitas Sebelas Maret.
R. A. Koestoer and Zulkifli, Perpindahan Kalor Konveksi. Jakarta: Fakultas Teknik, Universitas Indonesia, 1998.
S. Lee and S. U.-S. Choi, “Application of metallic nanoparticle suspensions in advanced cooling systems,” ASME PVP-Vol. 342 / MD-Vol. 72, pp. 227–234, 1996.
A. Maulana, “Analisis perpindahan kalor pada microchannel heat exchanger dengan menggunakan fluida kerja air dan nanofluida Al₂O₃–air,” Departemen Teknik Mesin, Universitas Indonesia, Depok, 2012.
S. M. S. Murshed, K. C. Leong, C. Yang, and N. T. Nguyen, “Convective heat transfer characteristics of aqueous Al₂O₃ nanofluids under laminar flow conditions,” International Journal of Nanoscience, vol. 7, no. 6, pp. 325–331, 2008.
M. Murti, “Laju pembuangan panas pada radiator dengan fluida campuran,” Jurusan Teknik Mesin, Universitas Udayana, Bali.
A. Permana and A. Fauzan, “Aplikasi nanofluida pada radiator,” Departemen Teknik Mesin, Universitas Indonesia, Depok.
N. Putra and R. Ferki, “Enhancement of force convective heat transfer in water-based nanofluids containing Al₂O₃ nanoparticles,” in Proc. 3rd Int. Conf. Heat Transfer, Fluid Mechanics and Thermodynamics.
D. Rahmayanti, “Karakteristik sifat termal (DTA–TGA) dan konduktivitas termal keramik cordierite berbasis silika sekam padi dengan penambahan alumina (0, 20, 25, dan 30 wt%),” Universitas Lampung, Bandar Lampung.
