Comments by "Zrips" (@Zripas) on "Engineering Explained" channel.

  1. You ignoring the fact that you watched AI generated fake video and you think that it represents actual reality...
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  2. No idea how its win win, and no, your modern american truck is still constrained by space. Do you expect it magically to not require bunch of extra space to fit all those hydrogen tanks in it? Or do you want to make those american trucks even bigger? Space issue remains independent of car type and size. This video was about V8 engine, by my knowledge V8 eats way more fuel than, well, any lover V's does, right? Your double performance is in comparison to actually economical hydrogen combustion engine, might be V4 or even V3, not a V8. Fuel cells break, but those break less than combustion engines. Why do you think there are no actual hydrogen combustion based mass produced cars? Because its a big issue when it comes to actual maintenance costs of those. Its just a expensive toy. And for f**k sakes, why do people keep bringing up BEV's into this conversation? This V8 can't even compete with fuel cell, why even bring in something else into conversation?
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  3.  @Rene-uz3eb  That's cool and all, but increasing car size will increase fuel consumption. So pick any of your super duper sized truck and try to shove in few cylindrical tanks in it. All that extra space you got from this super duper super sized truck gained would be lost, so what's the point? Your truck already utilized more or less max amount of space, just like every other car. There aren't just huge empty voids in cars chassy where you could just put in multiple tanks without compromising something. Google Toyota Mirai, its hydrogen car, it has 3 tanks to get 400 mile range. This is equivalent to basic car with 400 mile range, but, try to compare actual usable space in it, because Mirai suffers from huge central console (has one of the tanks there), small back seat (again, tank under it) and small trunk (yes, tank under it).
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  4.  @Rene-uz3eb  Check size of Mirai car, its huge, yet interior is tiny due to it needing to have 3 tanks. And its hydrogen fuel cell car. Now double that for combustion and then double that for v8 and you will realize how quickly you will run out of empty voids in your oversized (compensating for something?) car. Not even talking about maintenance costs... As every single hydrogen tank has expiration date printed on them, like every single one of them. Imagine a need to replace those every X years... Good luck with that.
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  5.  @Rene-uz3eb  Hydrogen tanks expire based on time, not on refuel cycles, this is why those have expiration dates. You might extend their lifespan if you avoid filling them to the max, but you will still have that same expiration date after which you will HAVE to replace those independent on how much they degraded over time. And yes, its a crazy idea. Combustion engine on its core is silly idea as hydrogen fuel cell produces twice the energy, aka you can travel double the distance. And what exactly do you win by wasting energy with combustion engine? Sound... That's it... There are no other "benefit" besides it making similar sound to petrol one, everything else goes into negatives, including price, maintenance cost, refueling costs, usable space...
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  6.  @Rene-uz3eb  Cryo hydrogen is non option due to mentioned boiloff. No one in their right mind would want a fuel which just evaporates if you are not using your car and you would be risking to be stranded if you not used your car for few days. Money thrown away. And no, you can't just fill up before each trip, share amount of equipment needed for this would be more than the car itself in cost and in maintenance. Again, no one in their right mind would pick that option. So compressed gas it is. BEV's keeps improving on regular basis, its generally most convenient and cheapest option out there as alternative for gasoline cars. Hydrogen fuel cells would be second option, third would be, maybe, e-fuel type cars, then maybe hydrogen combustion. Aka your combustion engines would maybe kind of potentially work for heavy machinery, kind of, not really tho, as you could still get better performance and cheaper maintenance from fuel cell. Point is that hydrogen came in too late for it to become anything more than someone rich guys expensive toy, we got better solution.
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  7. What?
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  8. Which can do like 60 miles on full tank which costs like 100 bucks to fill it up. It's a cool toy, nothing much else.
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  9. You can't beat physics.
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  10. But his video was specifically about Toyota's V8 engine, if Toyota makes V6 or V4 then he will make one on those
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  11. Yes yes yes and humanity is being controlled by lizard people... There is no such thing as water powered car, it phatically can't exist without you braking basic laws of physics here. Hydrogen conversion from water takes in MORE energy than you will get back out of it while converting it back into water. No amount of perfected electrodes will help you here, you can't beat physics... So which scenario is more likely, there is lizard people controlling the universe who are afraid of water cars, or that dude lied?...
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  12. @ikukootsuka74 You have no idea how irrelevant your information is... On top of it being aimed to mislead people.
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  13. Well you are clearly not an engineer and not a scientists or just someone who did basic google search. Water isn't fuel, to extract hydrogen from water you need energy, which is, shockingly (to some here), higher than you will get back out of it even if you used hydrogen fuel cells which are twice the efficiency in comparison to efficient combustion engines. Shocker, I know. Basic math, you need 2kg of hydrogen to make 1kg of hydrogen. Try to see issue here with the math.
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  14. Not for long. There is limited amount of oil in ground, it will run out sooner or later, hydrogen is better option when it comes to supply of it, EV's would be best solution across the board.
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  15.  @daliborzak2485  Are we talking about convenience for the people or actual best solution fr environment and for long run? Because now you just saying that EV's are bad because some people in remote areas might experience inconveniences... Ok... EV's are still best solution either way, independent how inconvenient it might make someone living in mountains...
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  16. Because hydrogen is extremely low on energy density when it comes to its volume, then combine it with combustion engine which is half the efficiency of hydrogen fuel cell engines and you will get this low bar
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  17. Its aging even better than expected.
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  18. But it isn't, is it? Which part of this video got outdated and why exactly?
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  19. Riiiight, because those are piling up so fast already... Och wait...
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  20. It's called "recycling"...
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  21. After that they will need to resolve remaining 69 issues...
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  22. Yes, it's usually 3 of those and it extremely limits interior space for passengers, we have few examples of cars like that already
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  23. You forgot to fact check basic reality...
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  24. @dakawans83 Do you remember 2020 when you hag most strict corona restrictions and people stopped driving their cars and you got nice and clean air in cities for few months? Well, replace those cancer inducing polluting cars with clean ones and you might understand why it's a big deal. And yea, it's around 15% and not 1%. If we would talk about passenger cars, if you would include all transportation then it would be around 30%.
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  25. You are completely wrong by saying that he is completely wrong. What now?
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  26. You can't break laws of physics tho.
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  27. What difference does it make if he uses liters or gallons if he does it for both things?... Check any modern hydrogen car with decent range, all of those have 3 huge hydrogen tanks all over the car. Why? Because you need allot of space to fit all of it...
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  28. Duno what you would do with hydrogen fuel cell in space, but yes, you can do it, kind of. You would still need oxygen to combine with hydrogen to get energy out of it, but that would be only that, electricity. You are better off to just use solar panels.
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  29.  @kennysides6892  We are exploring alternatives, with battery technology, which on itself have few different variations. Hydrogen technology doesn't scale across the board. Take basics here, to build one hydrogen station you need around 1million bucks, to build one BEV's recharging station it would be around 50k, on top of that you will have wildly different maintenance costs. This is why we have like 3 million public BEV charging stations in the world and this is why there are under 1000 of hydrogen ones... Hydrogen doesn't scale...
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  30. Just because company decides to go all in with one technology, doesn't make it good or smart. Hydrogen is dead in the water, always was and always will be.
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  31. We have flying cars, those are called helicopters... And there is a reason why you see so little of those flying around. Noise pollution, safe risk, cost to operate, you need special license to operate it and you need special license to actually fly in specific areas as now you are no longer driving on the roads, you would be flying over someone's house, and lets be honest, you would not want some drunk a** person flying with his flying carpet over you... And for hydrogen being lighter than air... That's like least important thing, hydrogen is being stored either under extreme pressures which makes it way heavier than air or in liquid form. And no, we will not have flying cars you imagine here.
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  32. Tell him to google "hydrogen embrittlement"
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  33. Hydrogen combustion engine is non starter straight away. Why you ask? Simple, hydrogen fuel cell engines are twice the efficiency, so at best it will be hydrogen fuel cell and not combustion one. Basic physics, you can't beat those.
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  34. Check Mirai and how much space it has, now imagine having 2x more tanks to fuel this V8 atrocity.
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  35. Fuel cost would be astronomical. Hydrogen already is extremely expensive, having it combined with CO2 only increases price. You might resolve one issue, it still creates more. And you know what is the biggest issue with methanol? It being extremely toxic when ingested, inhaled, or absorbed through the skin. Not that good of alternative I might say.
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  36. Seeing people who never fact check, Toyota never made on-demand electrolysis... You should avoid watching AI created fake videos... Or at worse fact check.
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  37. Cleaner better, in general distilled would be best one to use.
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  38. Is this about one those cam claims that cars can run on water?
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  39. They don't, Toyota will go bankrupt in few years if they stick with their all in hydrogen nonsense... It simple doesn't scale, it sounds nice on paper, but it will not become reality.
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  40. Energy density by weight flies over the window when you check its energy density by volume. You could have energy source which can get you 1000miles from 1kg of fuel, will mean nothing if you need 1000m^3 of volume to store it. Is exaggeration of numbers, yes, I know, but its to make a point here, hydrogen takes up a lot of space which usually isn't something you can afford in passenger cars.
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  41. Because magic isn't real.
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  42. This is video about hydrogen cars, not BEV's...
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  43. Tech you are talking about doesn't exist.
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  44. First hydrogen combustion engine invented in 1806, first hydrogen fuel cell invented in 1966. How is that in infancy exactly? There are simply basic fundamental limitations of hydrogen, there is set amount of energy you could ever get out of hydrogen and there is set amount of pressure you could use to store that hydrogen and so on and on and on and on... Hydrogen technology basically hit its ceiling like 20 years ago
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  45. @HarryElmore-jl2p Any video you see mentioning water engine is 100% full of crap. I dare you to find official statement from Toyota mentioning your magical engine.
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  46.  @just_man209  Yes, and production process makes petroleum from crude oil too, does mean that you can just fill up on crude oil, doesn't it?... There is no such thing as cars powered by water, never was and never will be. And due to first law of thermodynamics you can't have hydrogen production on board, basic physics 101.
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  47. Why?
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  48. Can you figure it out?
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  49. Battery reaching its limits? Then why it keeps improving every year wit quite few battery technologies which showed huge potential in lab setting? Carbon nanotube batteries are exponentially better than any other battery out there, issue is with its production scalability. So no, its not reaching its limits, its just starting.
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  50. Why?
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