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
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
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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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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