Answered: A bipolar alkaline water electrolyzer…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A bipolar alkaline water electrolyzer stack module comprises 160 electrolytic cells that have an effective cell area of 2 m². At nominal operation, the current density for a single cell of the electrolyzer stack is 0.40 A/cm². The nominal operating temperature of the water electrolyzer stack is 70 ^oC and pressure 1 bar. The voltage over a single electrolytic cell is 1.96 V at nominal load and 1.78 V at 50% of nominal load. The Faraday efficiency of the water electrolyzer stack is 95% at nominal current density, but at 50% of nominal load, the Faraday efficiency decreases to 80%.

(Give your answer to at least three significant digits.)

Calculate the nominal stack voltage:

Answer in V

Calculate the nominal stack current:

Answer in A

Calculate the nominal power on the water electrolyzer stack:

Answe in kW

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