Viewing a single comment thread. View all comments

5ch1sm t1_j54qqfe wrote

Reply to comment by FDuquesne in The race to make diesel engines run on hydrogen by FDuquesne

The thing with these studies though is they often just look at the end result but not the whole thing.

Maybe the engine itself produce less CO2 emission, but you have to produce that Hydrogen in the first place. It requires a lot of energy to do so and depending of how it is produced, your 85% will be way less when you take that factor into consideration.

If the goal is really to produce less pollution, you can't just look at the last link of your chain, you have to take the whole thing into consideration.

5

tanbug t1_j54rzf7 wrote

Sure, but perhaps you can use local green energy to make hydrogen, say in a location where there is ample supply of water, sun and wind, and transport the gas using existing methods/infrastructure. It's still not as good as if you could use electricity more directly, but it's at least easier to distribute, and better than keep using fossile fuel.

5