- #1
samski
- 60
- 0
Hey, I am a bit confused about this...
sorry if I am being stupid, I am only 16...
I was thinking about hydrogen and the fact that it is less dense than air, and water and the fact that it is denser than air... Could the gpe gained by hydrogen, and the gpe converted into kinetic energy by water be used?
By that i mean, water is allowed to fall, some sort of dynamo is turned by the falling water (as in power stations) generating electricity. This electricity is used to electrolyse water, producing hydrogen (and oxygen). Hydrogen is allowed to rise, then when it reaches the top again, it is burnt, producing water again and energy. The water is then allowed to fall again. Surely there is an excess energy here or am i missing something blindingly obvious? Surely the larger the distance traveled down by the water and up by the hyrodgen, the greater the excess energy...
Thanks
sam
sorry if I am being stupid, I am only 16...
I was thinking about hydrogen and the fact that it is less dense than air, and water and the fact that it is denser than air... Could the gpe gained by hydrogen, and the gpe converted into kinetic energy by water be used?
By that i mean, water is allowed to fall, some sort of dynamo is turned by the falling water (as in power stations) generating electricity. This electricity is used to electrolyse water, producing hydrogen (and oxygen). Hydrogen is allowed to rise, then when it reaches the top again, it is burnt, producing water again and energy. The water is then allowed to fall again. Surely there is an excess energy here or am i missing something blindingly obvious? Surely the larger the distance traveled down by the water and up by the hyrodgen, the greater the excess energy...
Thanks
sam