Any help would be greatly appreciated, and possibly how you came to your conclusion. Thanks
A fuel cell’s efficiency is anywhere from 20 to 90% efficient. The volumetric energy density of hydrogen is only 405 Wh/l (3,600 joules) So you have 3,600,000 joules that mean a fuel cell could produce between 720,000 and 3,240,000 joules.
Dude! You are really getting too far with this. Who needs 1000 liters of hydrogen for one hour. If a small sized battery of video camera is replaced with exactly the same sized fuel cell, it can power it for more than a week if it is continuously used. That is really long duration considering that the size will be about 200ml. Fuel cells have really high power output and many range to even 90-95% Don't get confused with the numbers. Just use it. The more you calculate, the more you will get confused. Have a good day.
Here is some help: Tell me about the efficiency of your specific fuel cell. You can probable get the rest. Or you might list your question under homework help.
