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Proceedings of the 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2019)

ISBN Imprimir: 978-1-56700-497-7 (Flash Drive)
ISBN On-line: 978-1-56700-496-0

Experimental Investigation of Effect of Nano-Particle Size on Heat Transfer Performance in Heat Exchanger

DOI: 10.1615/IHMTC-2019.580
pages 341-345

Prashant B. Maheshwary
Department of Mechanical Engineering, JD College of Engg. & Management, Nagpur

C.C. Handa
Department of Mechanical Engineering, KDK College of Engineering, Nagpur

K.R. Nemade
Department of Physics, Indira Mahavidyalaya, Kalamb

Resumo

New experimental data is reported for CuO, MgO, TiO2, ZrO2 and Al2O3 water based nanofluids to enhance thermal conductivity by altering particle size. The effect of particle size alteration on thermal conductivity of nanofluids is verified for five different nanofluids, which is determined experimentally by hot-wire method. In the present work, probe sonication process is used to alter particle size of nanomaterial dispersed in base fluid. The probe sonication process is restricted to 60 min as further increase in probe sonication time does not show any significant decrease in particle size. As observed, all nanofluids show enhanced thermal conductivity than the base fluid. Among all nanofluids, Al2O3-water nanofluid (60 min) shows best thermal conductivity over base fluid (by 1.90 times).