scholarly journals The current distribution in an electrochemical cell. Part VII. Concluding remarks

2002 ◽  
Vol 67 (4) ◽  
pp. 273-278 ◽  
Author(s):  
Konstantin Popov ◽  
S.M. Pesic ◽  
Predrag Zivkovic
Keyword(s):  
Process Parameters ◽  
Current Distribution ◽  
Current Density ◽  
Electrochemical Cell ◽  
Side Wall ◽  
Cell Geometry ◽  
Electrode Edge ◽  
Side Walls ◽  
In Cells

Anew method for the determination of the ability of an electrolyte to distribute uniformly current density in an electrochemical cell is proposed. It is based on the comparison of the current in cells in which the electrode edges touch the cell side walls with the current in cells with different electrode edge ? cell side wall distances. The effects of cell geometry process parameters and current density are discussed and illustrated using the results presented in the previous papers from this series.

scholarly journals The current distribution in an electrochemical cell. Part IV. The relation to the haring-blum method

1999 ◽  
Vol 64 (5-6) ◽  
pp. 341-347
Author(s):  
Konstantin Popov ◽  
Slavisa Pesic ◽  
Tanja Kostic
Keyword(s):  
Current Distribution ◽  
Current Density ◽  
Parallel Plate ◽  
Electrochemical Cell ◽  
Cell Voltage ◽  
A Cell ◽  
Side Walls ◽  
In Cells

It was shown that the current density-cell voltage curves recorded in a cell with parallel plate electrodes for different distances between the edges of the electrodes and side walls of the cell can be used to determine the current distribution in cells of the Haring-Blum type.

scholarly journals The current distribution in an electrochemical cell. Part V: The determination of the depth of the current line penetration between the edges of the electrodes and the side walls of the cell

1999 ◽  
Vol 64 (12) ◽  
pp. 795-800 ◽  
Author(s):  
Konstantin Popov ◽  
Slavisa Pesic ◽  
Tanja Kostic
Keyword(s):  
Current Distribution ◽  
Electrochemical Cell ◽  
Polarization Curves ◽  
Current Line ◽  
Plane Parallel ◽  
Electrode Arrangement ◽  
A Cell ◽  
Side Walls ◽  
Parallel Electrode

A method for the calculation of the depth of the current line penetration between the edges of the electrodes and the side walls of the cell in a cell with plane parallel electrode arrangement is proposed. The method is verified by the calculation of the polarization curves for the cells in which the electrode edges do not touch the side walls of the cell. The agreement between the calculated and the measured values was fair.

scholarly journals The current distribution in an electrochemical cell. Part VI: The quantitative treatment for cells with three plane parallel electrode arrangements

2001 ◽  
Vol 66 (7) ◽  
pp. 491-498 ◽  
Author(s):  
K.I. Popov ◽  
S.M. Pesic ◽  
P.M. Zivkovic
Keyword(s):  
Quantitative Determination ◽  
Density Distribution ◽  
Current Distribution ◽  
Current Density ◽  
Electrochemical Cell ◽  
Current Density Distribution ◽  
Plane Parallel ◽  
Parallel Electrode ◽  
Quantitative Treatment

Amethod for the quantitative determination of the current density distribuion in cells with a three plane parallel electrode arrangement is proposed. It is shown that the current density distribution can be determined using the data obtained by simple polarization measurements. The relation to the Haring-Blum cell with P = 2 is discussed.

scholarly journals The effect of electrodeposition process parameters on the current density distribution in an electrochemical cell

2001 ◽  
Vol 66 (2) ◽  
pp. 131-137
Author(s):  
K.I. Popov ◽  
R.M. Stevanovic ◽  
P.M. Zivkovic
Keyword(s):  
Density Distribution ◽  
Current Distribution ◽  
Current Density ◽  
Electrochemical Cell ◽  
Common Knowledge ◽  
Cell Voltage ◽  
Current Density Distribution ◽  
Deposition Process ◽  
Exchange Current ◽  
Diffusion Control

Cell voltage - current density dependences for a model electrochemical cell of fixed geometry were calculated for different electrolyte conductivities, Tafel slopes and cathodic exchange current densities. The ratio between the current density at the part of the cathode nearest to the anode and the one furthest away were taken as a measure for the estimation of the current density distribution. The calculations reveal that increasing the conductivity of the electrolyte, as well as increasing the cathodic Tafel slope should both improve the current density distribution. Also, the distribution should be better under total activation control or total diffusion control rather than at mixed activation- diffusion-Ohmic control of the deposition process. On the contrary, changes in the exchange current density should not affect it. These results, being in agreement with common knowledge about the influence of different parameters on the current distribution in an electrochemical cell, demonstrate that a quick estimation of the current distribution can be performed by a simple comparison of the current density at the point of the cathode closest to anode with that at furthest point.

Linear theory of the circulation of a stratified ocean

1969 ◽  
Vol 35 (1) ◽  
pp. 185-205 ◽  
Author(s):  
Joseph Pedlosky
Keyword(s):  
Linear Model ◽  
Boundary Layers ◽  
Linear Theory ◽  
Wind Stress ◽  
Side Wall ◽  
Oceanic Circulation ◽  
Complete Determination ◽  
Side Walls ◽  
Stratified Ocean

A linear model of the circulation of a stratified ocean, in a closed basin, driven by both wind stress and heating is presented. Particular attention is given to the interdependence of the primary features of the oceanic circulation. The upwelling process is studied in detail and it is shown that the complete determination of the mid-ocean thermocline solution depends on the upwelling in the boundary layers on the ocean basin's side walls. The morphology of the side wall boundary layers as a function of the stratification is also discussed.

Innovative approaches in the organization of closed waste-free production of organic pork using cultural and natural agricultural land

2020 ◽  
pp. 15-25
Author(s):  
Volodymyr Ivanov ◽  
Andrii Onyshchenko ◽  
Liudmyla Ivanova ◽  
Liudmyla Zasukha ◽  
Valerii Hryhorenko
Keyword(s):  
Agricultural Land ◽  
Side Wall ◽  
Front Wall ◽  
Lower Edge ◽  
Metal Mesh ◽  
Two Phase ◽  
Transparent Plastic ◽  
Pork Production ◽  
Young Pigs ◽  
Side Walls

The mobile house for two-phase litter rearing piglets was developed in the conditions of pasture their housing, the feature of which is that its side walls and roof are made in the form of two similar in shape and length of arched panels. In the back wall of the inner shield is a litter box, a self-feeder for piglets, a feed unit for a sow and a wicket, and in the front wall of the outer shield are doors with a wicket. Along with this, all walls and the roof of the litter box are made of transparent plastic, and the wall located near the self-feeding trough is also made perforated. In addition, the lower edge of the side wall of the inner arch-shaped shield has slides in which the lower edge of the side wall of the outer arc-shaped shield is inserted. A house with transformable fences has been developed to rear the young pigs. The structural feature of the house is the presence on the outside of the walls of the bobbins with a metal mesh edged at the bottom with a flexible sleeve. In order to ensure the conditions of gentle etching of the vegetation cover and to prevent damage to the turf of the pasture, the house can be completed with another type of hedge consisting of two hinged sections with doors on each side of the fence. In addition, the horizontal wings are rigidly attached to the hedge and connected by a metal mesh around the perimeter, the size of the cells of which ensures that the grass is eaten but prevents the turf of the pasture from being undermined. The developed devices for camp-pasture and feeding of maternal stock, suckling pigs, weaning pigs, repair and fattening pigs are well suited for year-round closed non-waste organic pork production using cultural and natural agricultural land. Key words: housing, feeding, devices, sows, piglets, young animals, pasture, organic pork.

scholarly journals Impact of Process Parameters on the Diameter of Nanobubbles Generated by Electrolysis on Platinum-Coated Titanium Electrodes Using Box–Behnken Experimental Design

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2542
Author(s):  
Karol Ulatowski ◽  
Radosław Jeżak ◽  
Paweł Sobieszuk
Keyword(s):  
Experimental Design ◽  
Process Parameters ◽  
Current Density ◽  
Salt Concentration ◽  
Multivariate Regression ◽  
Electrical Energy ◽  
Multiphase System ◽  
Anova Analysis ◽  
Dependent Variables ◽  
Parameter Function

(1) The generation of nanobubbles by electrolysis is an interesting method of using electrical energy to form bubble nuclei, effectively creating a multiphase system. For every process, the effectiveness of nanobubble generation by electrolysis depends on various process parameters that impact should be determined. (2) In this work, the electrolytic generation of hydrogen and oxygen bubbles was performed in a self-built setup, in which a Nafion membrane separated two chambers. The generation of bubbles of both gases was investigated using Box–Behnken experimental design. Three independent variables were salt concentration, current density, and electrolysis time, while the dependent variables were Sauter diameters of generated bubbles. An ANOVA analysis and multivariate regression were carried out to propose a statistical and power model of nanobubble size as a process parameter function. (3) The generation of bubbles of hydrogen and oxygen by electrolysis showed that different factors or their combinations determine their size. The results presented in this work proved to be complementary to previous works reported in the literature. (4) The Sauter diameter of bubbles increases with salt concentration and stays constant with increasing current density in investigated range. The proposed correlations allow the Sauter diameters of nanobubbles generated during electrolysis to be predicted.

Sign in / Sign up

Export Citation Format

Share Document