Collect. Czech. Chem. Commun. 1983, 48, 2213-2231

Simultaneous mass and heat transfer to a plate electrode in the region of free convection with antiparallel fluxes of mass and heat

Petr Novák and Ivo Roušar

Department of Inorganic Technology, Prague Institute of Chemical Technology, 166 28 Prague 6


Simultaneous transfer of heat and ions to a vertical plate electrode in the region of free convection was treated mathematically by solving the Navier-Stokes, convective diffusion, and convective heat transfer equations. The direction of flow due to heat flux was considered opposite to that due to flux of ions. A criterion equation was proposed for the calculation of the Sherwood criterion with an error smaller than 2%. This was verified experimentally by measuring the limiting current densities for electrolytes containing K4Fe(CN)6 and K3Fe(CN)6 with KOH as base electrolyte.