electrochemical digram

Chemical Engineering Tutorial Problems Problem 1. Suppose that a buried steel structure is to be catholically protected using a rectifier apable of delivering 1 volt and 5 amperes through the wiring system. Assume that the soil resistance 80% of the external resistance. Calculate a) the soil resistance when the anode bed is 4-meter long, and 0.10-meter in diameter and b) the current density. Use diagram to answer. Switch Ammeter Voltmeter A Power Supply V Impressed-Current Flow RE Pipe AE (Anode) WE (Structure) Soil Figure 8.6 Three-electrode technique Cathode (-) Cathode Steel Structure #1 Power Supply Steel Structure # 2 (+) 2 L Anodes Anode Bed h Soil (Electrolyte) Figure 8.7 Cathodic protection system of two steel structures using an embedded anode bed