Ethylene Glycol Heat Transfer Coefficient. It was seen that the gnielinski equation failed to predict the heat transfer coefficient of the nanofluid. The fluid with better heat transfer capabilities.
In most water based heat transfer applications eg based fluids offer excellent heat transfer efficiency and somewhat lower operating temperature ranges due to the lower viscosity of eg solutions compared to equal concentrations of pg. Abstract new nanofluids as dispersions of dry zno nanopowder in ethylene glycol water 5050 in volume were investigated at three mass nanoparticle concentrations up to 5. The maximum enhancement of convective heat transfer coefficient is observed to be 170 at 05 vol in the turbulent region.
In the newtonian flow regime the pipe was heated at 325 k.
Ethylene glycol key benefits. In most water based heat transfer applications eg based fluids offer excellent heat transfer efficiency and somewhat lower operating temperature ranges due to the lower viscosity of eg solutions compared to equal concentrations of pg. 1 btu lbmof 41868 j kg k 1 kcal kgoc note. With increasing volume fraction of ethylene glycol ratio of the density to the viscosity decreases therefore based on 1 velocity increases.