Hydrogen Fuel Cell electric bike
Uploader Comments (cplai)
Top Comments
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@lordofspeeds4321 It is not just a matter of accent. In places outside of the US, aluminum is spelled with an extra i. Aluminium is pronounced differently than aluminum.
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@DancingET Are you referring to hydrogen hydrates? A friend of mine study gas hydrates when he was in grad school. Some big oil company offered him a job to extract gas hydrates in Alaska. He declined because he did not want to work in a frozen world.
All Comments (339)
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@cplai I know that. These are two different questions I am asking ))). I want to say that energy per kg of fuel cell is too small because fuel cell contains only 140 grams of hydrogen - it's ridiculous. I need to know real efficiency of that fuel cell. 50, 60, 70 percent?
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@sweetgyy Don't agree. See the Tesla Roadster and in 6 months, the Model S. The Model S has an 8 year warranty on the battery and max range of 300 miles. Lithium-ion batteries don't lose charge within a couple charges. They lose charge after a couple hundred charges.
Hydrogen is extremely difficult to isolate in ENOUGH quantity. That makes it prohibitively expensive.
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make it cheep help the kids the moms and dads the poor stop the wars
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i like this idea. better than stupid lithium batteries. don't agree? just look at your laptop or cellphone batteries as they lose potency within a couple of charges.
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@martinzopetazo What I meant is that if hydrogen is just an energy storage medium, then it does not matter whether it takes more energy to extract than to consume hydrogen or not as long as you use clean renewable energy. Likewise, every coal fired power plant actually burns more energy to generate the electricity it produces. There is always a loss. So it is silly to burn fossil fuel to produce hydrogen.
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@martinzopetazo The entire Hydrogen economy is about using the Hydrogen molecule as a clean energy storage medium. Using solar power to convert water to hydrogen and oxygen, you essentially store solar energy as chemical energy. When you burn Hydrogen, you release that energy and produce water as a by product. It is a storage cycle, starts with water and ends with water. Clean exchange in between. So hydrogen production must be clean or it defeats the original purpose.
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@rstevewarmorycom totally true :D guess u also know Dr. Ulf's ideas :D unless we go to the sun and harvest some H, this wont work at all.
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@cplai and...... if he refers to water, then it takes more energy to extract H from water that we can actually get from H
140 grams of hydrogen inside 20 kilos fuel cell ... hmmm ... does not make much sense. I wonder how much is efficiency of that fuel cell? more then 50 percent?
Tmaker197812 2 weeks ago
@Tmaker197812 The weight of the fuel cell is irrelevant to the efficiency formula except for weighing down the vehicle. When hydrogen is passed through the fuel cell, it is turned into water vapor and release electricity in the process. It is analogue of feeding gasoline into a generator to get electricity. The ratio of weight of fuel vs. the weight of the generator is irrelevant to efficiency.
cplai 2 weeks ago