Re: Toyota Mirai breaks world record with 1000 km drive on a single tank of hydrogen Quote:
Originally Posted by SKC-auto The below graphic tells where H2 is useful, and where H2 may not be that useful, created by a researcher(one who actually supports hydrogen) I follow on Twitter. Their analysis shows H2 may not be useful for cars, buses and even trucks. Trains and metro trains are already electric in India, no use of hydrogen or batteries. Shipping and long haul aviation can move to hydrogen. |
This is a good graphic for sure. Thing is, right now, I don't think anyone can truly say where the pressure points lie in the various systems, that'll only come with time and with implementation (ideally at scale but realistically at smaller scale and then extrapolated on the basis of data). What graphics like these attempt to do is make the best educated guess based on what we know now, and to that extent it's a really good starting point. For urban stop start traffic, for sure BEV has an advantage especially if we couple it with regenerative braking for eg. However the moment you introduce long stretches of motorway driving, you lose that really helpful crutch to traditional range anxiety and it's in those blind spots so to speak, I think there is room for solutions like H2 fuel cell tech. I wouldn't rule out cross country trucking in that case.
Taking delivery vans etc, within the urban environment, as we've seen with recent BEV releases, the range is well within the daily requirements. It's why you see companies like Amazon opt for BEV delivery fans for urban environments. In a similar vein, if some solution can be found for topping up electric busses at terminals or bus stops (passively by inductive charging for eg), that ties up any concerns in that regard.
As for trains, from what I recall, there are still diesel electric locomotives on goods routes right? There of course it isn't so hard to imagine just switching wholesale to electric. Quote:
Also as hydrogen tech improves in next 10years, battery tech will be far ahead and it's a waste of energy to first make hydrogen and then convert to electricity.
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I think this is the very problem I was trying to highlight. It's easy to fall for the trap of putting all our eggs in one basket but as it's abundantly clear, no one solution is going to help us in the energy transition. To decry hydrogen entirely is to my mind foolish because that's purely looking at everything with BEV tinted glasses and using that one square peg for all the holes we envision, be they square or otherwise. I'm happy that a big company like Toyota with the engineering resources behind it is exploring this alternate route because that's precisely what we need, we need all the different tools in our toolkit to meet emissions challenges going forward.
As for the waste of energy example, I don't think it's so cut and dry. Let's take the most optimistic example and say a country transitions entirely to zero hydrocarbon electricity grids, and suppose that gives them excess capacity. This might mean that said country can look to export electricity (eg, what Ethiopia is hoping to do with the completion of the Grand Ethiopian Dam), or you could envision utilising that excess capacity towards green hydrogen, in which case suddenly you're looking at an energy exporter in both senses of the word. Granted this is very much an idealised scenario and to whit it's hard to think of a current example from my knowledge but it might not be as far off as we think (or at least I hope..). |