Wow Loz ! You truly are bringing us the inside information with the Man himself. What a Great read this is ! Well done Miftakhov, It really opens one's understanding about where Hydrogen technology is going, and it's Very Exciting to say the least ! ! Great interview thanks Loz ! (pssst...Miftakhov need to go have a chat with Skai, perhaps they can partner up, it would be perfect ! )
IMHO Hydrogen should/must NEVER be used for any air/land/sea vehicles! Why? Because it is no ordinary fuel! Hydrogen fuel tank leaks/raptures (which would happen commonly/frequently if hydrogen fuel goes into wide scale usage) does NOT cause fires (like other fuels do) but cause explosions (like bombs)! "biofuels cannot scale": IMHO they can scale enough, for sure, if they needed/used only for aircraft & ships (NOT for land vehicles, which can run OK using only electricity)!
I agree with Towerman, but I also agree with FB36, I would have to see how a highly pressurized Hydrogen tank does in a severe crash, as in tanks ripped open in the presence of an ignition source. I know jet fuel burns too, but Hydrogen under immense pressure seems far more energy intensive over a much shorter time...
FB36... if people thought like you do, we would still be traveling by horses and ox carts.... or was gasoline and all oil derivates an ordinary fuel and someone said "oh, let's built combustion engines and use all that ordinary fuel we have no use for"... "but hey, let's go ahead and make turbines for that ordinary fuel too" - you forget that everything has a start, a development and stabilizing phase. Hydrogen is already quite widely used, but not in aviation. It will get there eventually like gas engines did, but it needs to get into the segment so the kinks can be worked out.
Well, it still takes way more energy to compress hydrogen to a useful level, than the energy you'd get out of it. Physics is funny that way.
@nick101 & fb36, Hydrogen is by far much safer than gasoline fossil fuels plus it can come from the limitless solar energy including from the rain, and wind while it cleaning recycles H2o, forever. Read the research beyond fossil fuel's obvious reports in an effort to not die too quickly.
@ Tris, Pressurized hydrogen is far more dangerous than gasoline of jet fuel. The speed at which the flame front in a hydrogen/air mixture moves if far faster and the ignition energy needed to ignite it is far lower. What that boils down to is that in the event of a significant leak jet fuel needs a lot of heat to get ignited and then it will still burn more slowly releasing it's energy over a longer time period. Hydrogen needs only the slightest spark and will burn almost instantaneously, i.e. explosion.
I like the idea of hydrogen fuel cells for future vehicle power; however, pushing them as zero-emission is B.S. The hydrogen has to be generated using power and all power generation has an environmental impact regardless whether it is from fossil fuels, nuclear, solar, wind, biomass, hydro, etc. The real question is whether the tech has less environmental impact than other approaches!?
Tris, how do you know Hydrogen under immense pressure is safer than gasoline? I'm a pilot and of course we fear post crash fires, but unless I'm wrong, puncturing a PRESSURE vessel in the presence of an ignition source would be FAR more explosive and violent. I do agree that the H tank would probably be built much stronger, but doesn't that add a lot of weight as well, and since it's under pressure all the fittings need to be extra beefy as well, I would think. I fully agree aviation will be electric someday, by the way...
Hydrogen makes absolute sense for larger machines like Aircraft, ships and heavy equipment.