All books using the keywords: H.Wayne Cotten

The anode to cathode distance of a Hall cell is an important parameter to understand and control. If it is excessively large energy is wasted. If it is too small current efficiency is reduced. If smaller yet, the cell will become unstable. The anode to cathode distance is adjusted by moving the anode bridge to control cell resistance. It is generally assumed in resistance calculations that the bottom of the anodes are in one plane. It is also generally assumed that the cathode surface, which is the liquid metal, is static. Thus the anode to cathode distance is generally assumed to be the distance between the two parallel planes. In this paper, a simple and accurate method will be des ...

Power input to a cell is the product of volts and current and is therefore two dimensional. In this paper, we will use two dimensional charts to visually illustrate the power input to a cell used to make aluminum and the power used to maintain the cells heat balance. In doing so, we will also explore the power efficiency of the cell as well as defining other related efficiencies.