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2016-01-11 18:33:30 Post No. 7776328
Post No. 7776328
I came across a video about a scooter that runs on water on Facebook and everybody is talking about how this could be used but gas companies kill people who bring it forth etc....
So I thought I'd do my own calculation on it but not being a scientist and only getting basic chem about 10 years ago I got stuck, here's what I have so far:
Water = H2O (2 Hydrogen molecules for each Oxygen molecule)
Energetic Value Hydrogen = 141,86 MJ/kg on burning and you need 1 Oxygen molecule per 2 Hydrogen molecules in order to burn it. (https://en.wikipedia.org/wiki/Energy_density)
1l water = 1kg
1l water = 666g H, 333g O
0,666kg * 141,86 MJ/kg = 94,48 MJ
1MJ = 0.28kWh
=> 94,48 MJ * 0.28kWh/MJ = 26,45Wh
So if I split water using electricity I'd get about 26Wh of energy from it if I burn it, but I can't find how much energy I need to split one liter. I've read you can use a 9V batterij for example, but how much mAh should it have to split 1 liter?