(Barbir Chp6 Problem 4) A fuel cell has 100 cm? active area. Air at the inlet is fully saturated at 60°C. Pressure at the inlet is 200 kPa, and there is a 15 kPa pressure drop through the flow field. Oxygen stoichiometric ratio is 2.5. Calculate the heat generated at 0.65V and 1 A/cm? by (i) assuming energy of fuel (higher heating value) is converted into electricity and heat and (ii) by doing a detailed mass and heat balance analysis (assume hydrogen is supplied in dead-end mode saturated at 60°C and that net water transport through the membrane is such that there is no water accumulation on the anode side). (Answer: 83.2 W. 85.13 W)
(Barbir Chp6 Problem 4) A fuel cell has 100 cm? active area. Air at the inlet is fully saturated at 60°C. Pressure at the inlet is 200 kPa, and there is a 15 kPa pressure drop through the flow field. Oxygen stoichiometric ratio is 2.5. Calculate the heat generated at 0.65V and 1 A/cm? by (i) assuming energy of fuel (higher heating value) is converted into electricity and heat and (ii) by doing a detailed mass and heat balance analysis (assume hydrogen is supplied in dead-end mode saturated at 60°C and that net water transport through the membrane is such that there is no water accumulation on the anode side). (Answer: 83.2 W. 85.13 W)
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter1: Atomic Structure
Section: Chapter Questions
Problem 6RQ: How many valence electrons are generally contained in materials used for insulators?
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![(Barbir Chp6 Problem 4) A fuel cell has 100 cm active area. Air at the inlet is fully saturated at 60°C.
Pressure at the inlet is 200 kPa, and there is a 15 kPa pressure drop through the flow field. Oxygen
stoichiometric ratio is 2.5. Calculate the heat generated at 0.65V and 1 A/cm? by (i) assuming energy of
fuel (higher heating value) is converted into electricity and heat and (ii) by doing a detailed mass and heat
balance analysis (assume hydrogen is supplied in dead-end mode saturated at 60°C and that net water
transport through the membrane is such that there is no water accumulation on the anode side). (Answer:
83.2 W, 85.13 W)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F57de4c00-b18f-4b75-adb7-13827a0b8447%2Fb7184f39-46b7-4842-ac5a-796294bdd2a1%2Fre2ntr_processed.png&w=3840&q=75)
Transcribed Image Text:(Barbir Chp6 Problem 4) A fuel cell has 100 cm active area. Air at the inlet is fully saturated at 60°C.
Pressure at the inlet is 200 kPa, and there is a 15 kPa pressure drop through the flow field. Oxygen
stoichiometric ratio is 2.5. Calculate the heat generated at 0.65V and 1 A/cm? by (i) assuming energy of
fuel (higher heating value) is converted into electricity and heat and (ii) by doing a detailed mass and heat
balance analysis (assume hydrogen is supplied in dead-end mode saturated at 60°C and that net water
transport through the membrane is such that there is no water accumulation on the anode side). (Answer:
83.2 W, 85.13 W)
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