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DOI: 10.1615/ICHMT.2014.IntSympConvHeatMassTransf.820
pages 1097-1104

Mohsen Nasr Esfahany
Department of Chemical Engineering, Isfahan University of Technology

Elahe Fadaie
Department of Chemical Engineering, Isfahan University of Technology Isfahan 8415683111, Iran


Liquid mass transfer coefficient in the presence of 8-nm Fe3O4 nanoparticles in rising bubbles in a vertical tube was investigated experimentally. Variation of mass transfer coefficient with Reynolds number and volume fraction of nanoparticles was studied. Mass transfer coefficient of nanofluid with 0.001% and 0.005% volume fraction was measured lower than that of water for all Reynolds numbers. For nanofluids with 0.01-0.05% volume fraction of nanoparticles, enhancement in the mass transfer coefficient was observed relative to the base liquid. Nanofluid with 0.05% volume fraction of nanoparticles, at Reynolds 2100, enhanced mass transfer coefficient about 76%.

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