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What's wrong with hydrogen? You can produce it with renewables, it basically works with existing IC technology and the exhaust is just water. The only hangup is
by toiletaccount 5y ago
What's wrong with hydrogen? You can produce it with renewables, it basically works with existing IC technology and the exhaust is just water. The only hangup is the energy/volume ratio, which is an area of ongoing research.
- throw37388 5y agoHydrogen burns and produces greenhouse gas!
- detaro 5y agouh, no?
- throw37388 5y agoYes 》Water vapor is known to be Earth’s most abundant greenhouse gas https://www.nasa.gov/topics/earth/features/vapor_warming.html https://www.nasa.gov/topics/earth/features/vapor_warming.htm...
- toiletaccount 5y agoRun it through a condenser, feed it into a holding tank and dispose of the water at each filling station?
- jbotz 5y agoNo need, the atmosphere is a sufficient condenser. Unless you heat the atmosphere with a lot more energy than the little bit you get from combusting the hydrogen in question... but then you'll have bigger problems as your oceans begin to evaporate.
- iso1210 5y agoWell technically yes
- jbotz 5y agoAlthough water vapor is technically a "greenhouse gas", it is not responsible for forcing any global warming. That's because at the temperatures we're interested in water is a liquid, not a gas, and what small amount of water remains gaseous is entirely determined by the air's temperature. So water vapor can't force any warming, it can only amplify other forcings.
- detaro 5y agoLarge-scale hydrogen production is commonly based on fossil fuels right now, and that's what many fossil fuel companies push when they talk hydrogen. End-to-end efficiency is also not that great. That doesn't necessarily disqualify hydrogen, but it's not as obvious as often presented.
- toiletaccount 5y agoIt seems like a good hydrogen chain could look like: solar panels floating in the ocean split the water and store it, a tanker picks it up and takes it to port. Burn hydrogen at a power plant for the grid, condense the vapor and use it for drinking or farming. It seems like a great fit for...a lot of use cases. (if we can get over some of the storage hurdles)
- namibj 5y agoEven then it's comparatively trivial to capture the carbon dioxide from steam reforming, as opposed to gasoline in a car.