FORCED CONVECTION HEAT TRANSFER OF COBALT NANOFLUID IN A GLYCEROL–WATER BASE MIXTURE

Heat-transmitting equipment is subject to growing operating temperatures and heat transfer rates, which leads to the
development of a nanofl uid as an alternative. The forced convection heat transfer coefficient (hn ) and friction factor
(fn) of cobalt (Co) nanofl uid in the glycerol–water (G/W) blends are reported in this work. A two-step procedure is
used to produce a co-nanofl uid of 0.18% maximum volume concentration in an optimal mix of 30% glycerol and 70%
water, and an experimental setup is constructed. The test segment is a simple circular copper pipe operating under
constant heat fl ux boundary conditions. The properties, concentration, and fl ow rate — all affect heat transfer in
nanofluids; the h n and f n of the nanofluid were higher than those of the basic fluid. At a 0.18% volume fraction and
similar Reynolds number, the maximum increase in h n and f n was 43.6% and 35.2%, respectively

Author:  T. Rajendra Prasad, K. Rama Krishna, K. V. Sharma, Nagesh Mantravadi, P. H. V. Sesha Talpa Sai
Keywords:  nanofluid, glycerol–water mixture, heat transfer coefficient, friction factor
Page:  1405