Electrochemical Q13 **Transcription:**12. An industrial fuel cell has to supply a continuous 20 MW to a perfectly efficient inverter at 123 V. Assuming it uses a hydrogen gas/air PEM system, what are the needed flows of H₂ and air? See the simplified schematic that follows. Assume each fuel cell produces 1.23 V.13. In the fuel cell configuration in Exercise 12, the actual voltage delivered by the cell varies with load; assume the voltage measured at full load is 1.15 V. Explain whether or not it is possible to design a cell that is both light and small with a high efficiency. How many cells do we need in series and what is the cell electrolytic efficiency, η, of the electrode metal in the half-reaction involving H₂O? If you run a fuel cell in reverse as an electrolysis cell, H₂O is split into its elements H₂(g) and O₂(g). This way we can make hydrogen and have components for outside ref power. The stored gases can be reversed as a fuel cell. If14. ...of the electrode metal in the half-reaction involving H₂O? If you run a fuel cell in reverse as an electrolysis cell, H₂O is split into its elements H₂(g) and O₂(g). This way we can make hydrogen and have components for outside ref power. The stored gases can be reversed as a fuel cell. If**Diagram Explanation:**The schematic diagram displays a Proton Exchange Membrane (PEM) fuel cell. Essential components and processes are labeled as follows:- **Anode:** The section where hydrogen (H₂) gas enters the fuel cell.- **Cathode:** The section where oxygen (O₂) gas is delivered and where the reduction reaction occurs.- **Catalyst:** A layer located at both the anode and cathode sides to facilitate the respective chemical reactions.- **PEM (Proton Exchange Membrane):** Lies between the anode and cathode, allowing H⁺ ions to pass through while restricting gases and electrons.- **Conversion to H₂O:** Indicates the process where oxygen combines with electrons and protons to form water.- **Load:** Signifies the electrical load, where the generated electricity flows to perform work.- **e⁻ (electron flow):** Indicates the flow of electrons through an external circuit from anode to cathode.The diagram highlights the essential reactions and

Given Data: V = 123 V v = 0.75 v efficiency = 61%

Catalyst Conversion to H,0 Catalyst PEM incel electrolytic efficiency is 0.75/1.23=61.%. How many cells do we need 14. If t varies with load: assume the voltage measured at full load is 0.75 V, so that an electrolysis cell, H,O is split into its hydro-

Catalyst Conversion to H,0 Catalyst PEM incel electrolytic efficiency is 0.75/1.23=61.%. How many cells do we need 14. If t varies with load: assume the voltage measured at full load is 0.75 V, so that an electrolysis cell, H,O is split into its hydro-

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

31.11 here is a WRONG answer, I think the answer should be 30.41 since it need to be subtracted to 0.7 making it 30.41. Kindly solve it"
Electronic
B9
You are an electrician working on an overhead crane. The crane uses a large electromagnet to pick up large metal pipes. The magnet must have a minimum of 200 VDC to operate properly. The crane has an AC source of 240 V. You are given four diodes that have a peak voltage rating of 400 V each. These diodes are to be used to form a bridge rectifier to convert the AC voltage into DC voltage. Is the voltage rating of the diodes sufficient? To the nearest volt, what will be the DC output voltage of the bridge rectifier?
Assignment oWrite short notes on 10 different types of diodes. Make sure to include their symbols
Rectifier determine the following show complete solution
D + 201 25A (b) Iz Find the range of the current value Ix in which the diode is 'off' in the circuit. Diode is ideal
A K- type thermocouple is used to measure the temperature in a heating process. The length of the bare material is 110mm and thickness is 1mm. Find the time constant of the bare material. Type of Thermo-coupleMaterial K ( W/m-k) Q (kg/m³)s (J/Kg- oc) Iron- Constantan 46 8535 345 K Kromel- Alumel 35 8738 380 T Copper- Constantan 160 8902 316 E Cromel - Contantan 33 8825 336 N Nicrocil- Nisil 34 8702 376 B Pt(30%)Rhodium - Pt(6%)Rhodium 19 15718 56 R Platinum(13%)Rodium - Platinum 55 16628 99 Platinum(10%)Rodium - Platinum 52.9 16745 99 Time constant of the bare material is, T=
Tesla Model S has a current range of about A. 300km B. 400 km C. 500km D. 600 km
Calculate the equivalent resistances Rin of the following circuits. (The resistance value of the diodes in the conduction will be 0, the resistance value of the diodes in the insulation will be taken as infinity. R1=10ohm
i. Show that the power factor for a controlled full-wave rectifier with a resistive load is 1 sin(2a) + pf = -
(iii) Having determine the unknown resistance in (ii), you decide to adjust the variable to equal that of Roc. determine across the galianometa the potential difference across the resistance