A novel heat transfer fluid with bio-nanomaterial, which is
environmentally safe, is prepared and its thermo-physical
properties such as thermal conductivity and viscosity are
measured. The bio-nanomaterial considered in this study is
mango bark. A two-step process is employed to prepare a
stable nanofluid. The average particle size was measured using
scanning electron microscope and is found to be 100nm. The
stability of the nanofluid is checked by measuring the
absorbance and viscosity at a constant temperature. The
concentration of nanofluid and temperature are varied between
0.1 to 1 vol% and 10 to 60 oC, respectively for the
measurement of viscosity and thermal conductivity. The
measurement shows that the measured thermal conductivity of
the water is comparable with the standard data presented by
American Institute of Physics and American Chemical Society.
Also, the measured thermal conductivity of the nanofluids
showed a slight enhancement compared to the thermal
conductivity of water. The measured viscosity of the nanofluids
shows exponentially decreasing trend.
Papers presented at the 13th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Portoroz, Slovenia on 17-19 July 2017 .