Comments by "Engineering the weird guy" (@engineeringtheweirdguy2103) on "Electric " channel.

  1. Battery materials are absolutely not completely depleted, additionally you can recycle 96% of an EV battery, including all the lithium.
    13
  2. I wouldn’t count on that. A little thing called physics gets in the way of hydrogen.
    3
  3. You are so far off the mark it isn’t funny
    3
  4. Yet alone run them at twice the price per mile for fuel compared to ICE yet alone BEV
    3
  5. it also costs at minimum 4 times as much as an EV to produce..... so theres that.
    3
  6. Hydrogen isn’t a practical fuel. Batteries are just more efficient and more practical. Sadly hydrogen will always has limits in physics that makes them completely impractical
    2
  7. Because combustion engines are no where near as efficient as a fuel cell.
    2
  8.  user-ky7iz6up1v  comic books? That’s the maths. A Toyota Mirai fuel tanks operate at 700 bar. Refueling pressure is 880 bar in order to pump it in. Steel bottles containing cooking gas have a max pressure of 15 bar. The energy required is the energy required. You can’t skirt that. I can break down the maths for you if you’d like but you won’t create much hydrogen at all with a car battery.
    2
  9. That implies EV’s are bad tho
    2
  10.  @markwamsley6879  Also, your statement about patients for "lesser minds" not the mark of a great person. Be careful about advertising that.
    2
  11. Actually no. Worse. As it turns out
    2
  12.  @701983  I think the numbers are closer than that, even using your values. My understanding is that whilst 10kg cO2/kg H is correct for the actual process of the steam reformation. It doesn’t include the methane burnt in the boiler. At least 33% of the methane used in SMR is utilised for heating, not the reactions. From what I can tell this adds another 3.2kg of cO2 per kg of hydrogen. Additionally, whilst you could say it was electricity used for compression would be generated with gas, it’s most likely being compressed using grid electricity. And if the grid is 100% coal, and badly inefficient coal at that, that would add another 2 kg, so your total now would be 17kg. Or 15kg if the SMR has its own fancy generator and isn’t connected to the we’re basing this comparison off of. As for BEV’s, not sure how you’re getting 36% grid and charging losses. Seems like ALOT for more than a 3rd of electricity to be wasted. But here’s my breakdown. Mirai is rated at 402 miles per 5.6kg H, so it range on 1kg H is 72 miles. My Tesla model 3 over 4 years averaged 209Wh/mi. So for the same distance it will use 15kWh. (Pretty close to your 16kWh). But average charging efficiencies are around 98% from plug to battery. US transmission losses vary depending on location but from what I can read, at worst it’s around 15% and by average >5%. So if we take 5%, then we have a total loss of 8%. Making the total generated power 16kWh. But you’re also right in that there isn’t really a pure coal grid on the planet. Also worth noting that the figures for hydrogen don’t include transportation losses, to get the hydrogen to the fuel stations. But my numbers put them on par with one another excluding transportation losses of hydrogen.
    2
  13.  @o00scorpion00o  Australian government isn’t much different if I’m being honest
    2
  14.  @thetruthyes oooohhhh, so that’s why every car maker was resisting with every fibre of their being from going electric until Tesla started taking huge chunks of their sales, so they tried to smear Tesla and have now ended up resigning to the fact that they’re going to have to go battery as well at great cost to the companies profit margins…. Because they WANT to go electric… makes sense.
    2
  15. Let’s do some corrections shall we? -hydrogen source: water, but for large output, electrolysis won’t keep up with demand. You’d need to get hydrogen from hydro carbons. Aka fossil fuels. -carbon footprint: larger than BEV’s this is because to get hydrogen you either have to pump more energy into water than you get out, or you get it from fossil fuels. Either way, you’re producing at best 4 times as much emissions as a BEV because you’re using 4 times as much electricity per mile to make the hydrogen. -additional environmental impacts: high actually. Fuels cells don’t last as long as batteries and contain rare and highly toxic metals inside them. -EV batteries are actually around 96% recyclable, including all the metals and lithium which can be re-used near infinitely. - the model 3 has one of the lowest 5 year depreciations ever recorded. It’s re-sale is fine. Dealers don’t want them because they aren’t yet equipped to service them. And need less maintenance so they get less commission from servicing compared to ICE. - “EV’s still require power from gas, crude oil or nuclear to recharge” yes but where do you think the 4 times higher electrical load per mile of producing Hydrogen comes from? The very same grid. So while yes. You do need to use a dirty grid to charge. bEV, you need 4 times the energy per mile from the Same grid for hydrogen. Without the possibility of charging from home solar. -you won’t be filling your car with water. Sorry to burst that bubble. Hydrogen releases energy when its combined with oxygen to create water. So think about it for a second. You are taking water, using energy to split it into hydrogen and oxygen, recombining the hydrogen and oxygen into water to create water, and taking the energy from that to split more water AND run a vehicle? No. Sorry. You are starting with water and ending with water. And you expect excess energy from that process? That’s like plugging a power board into itself and expecting unlimited electricity. Doesn’t work. Think about it, if it did, why not just re-use that water over and over again. A glass of water to produce all the energy needed for the whole world from here until the end of time. Split the water, combine the water, wash rinse repeat. You really expect energy to just appear from nowhere, made up out of thin air? Get real. “Failure of EV green hype” what failure? EV’s are some of the best selling cars in the world at the moment. It’s also the fastest growing sector in the car market. What failure? None of this even addressing the utter impracticality of hydrogen in vehicles.
    1
  16. doubtful
    1
  17. He didn’t
    1
  18. they dont run on water, they produce water out of the exhaust.
    1
  19. That’s because capturing the hydrogen as a by-product is extremely difficult and requires very costly processes and equipment. It doesn’t just appear in pressurised containers ready to be shipped to fuel stations.
    1
  20. They want to stay relevant without having to do the actual work
    1
  21. Not likely
    1
  22. Unless Japanese have different laws of physics than everyone else. I doubt it
    1
  23. California. That’s about it
    1
  24. No. You can’t power your car on a jar of water. Sorry. There’s a little thing called the laws of physics. I can get into it in more detail if you’d like. And no. Steam cars were not zero emission. And there aren’t any modern steam engine cars. And for good reason. Again, happy to explain more detail if you’d like.
    1
  25.  @JamesW225  just because Toyotas is putting their money on it doesn’t mean it’s a good investment. Just look at GM’s hydrogen truck deal with “Nikola motors”. They gave them $2 billion for only 11% steak. For a literal scam. Their add about the “hydrogen truck of the future” had to be rolled down a hill to make it look like it was being driven. Or look at the billions invested into Theranos almost a billion dollars of investments. For litterally nothing but a scam.
    1
  26.  @JamesW225  and what do you say about the legacy auto makers that pulled out of hydrogen? They certainly don’t want to put their money there anymore and have gone to battery instead. Or even Toyota themselves. They have, what? Only 1 hydrogen car on sale? The Mirai? And it’s only been the one hydrogen model since 2014, no other models hitting the market, barely any advancement made in the technology. Meanwhile, Toyota, the very same company, announced 10 new battery electric models to hit the market before 2026! That’s literally 10 times as many battery electric cars models invested, than hydrogen cars invested in, a 10 times shorter timespan. Sure, they’re definately putting their money where their mouth is. ‘rolls eyes’
    1
  27.  @JamesW225  except they aren’t, like I said, they’ve announced 10 new models of BEV to start rolling out on the next 3 years, but hasn’t released a single other hydrogen model since the Mirai 10 years ago. and hasn’t made any meaningful advancements since in the hydrogen technology.
    1
  28.  @JamesW225  so less steering away from batteries and more steering INTO them and away from hydrogen.
    1
  29.  @JamesW225  actions speak louder than words don’t they. Did he say they’ve made a massive technological breakthrough with hydrogen and that they’ll be announcing 40 new hydrogen car models to hit the market in the next 2 years? Or is it still going to be just the mirai with the same technology since 2014, while they pump out new car after new car of Battery electric cars?
    1
  30.  @JamesW225  and has the company done anything in line with that statement as yet? Nooo. Have the released even a concept car showcasing the supposed improvements? Nooo. So what might that tell you? It SHOULD tell you it’s just like every other announcement they’ve made about hydrogen since they released the Mirai in 2014.
    1
  31.  @JamesW225  not offended. Just realistic.
    1
  32. And you’ll be saying that years from now and nothing will change. Just like the mirai hasn’t changed since 2014.
    1
  33. The oil companies are the ones pushing hydrogen.
    1
  34. It probably won’t because that’s not even hydrogens biggest problem
    1
  35. Well actually you only gotta look to Tesla for this. Their vehicles are very hard to steal. Statics show you are 90% less likely to have your car stolen if it’s a Tesla. That’s because of several features. First is that your phone is the key. There is no fob (in newer version) and no keys. (You can opt for an RFID card). So no locks to pick. Second is a that the car constantly records 360 around itself when parked. It can do this constantly because of its large battery. If anyone gets too close the car will flash its lights to indicate it’s recording you and save the footage. Meaning they’re the only cars in the market at allow you to get footage of people door dinging your car with their license plate meaning you can get those dings repaired without paying excess or increasing your premiums. Then there is the car alarm. The second the car alarm goes off it sends a message to your phone letting you know it’s been triggered. Presumably the owner is never too far away as that would be their mode of transport. Next is that the car can be monitored and controlled by your phone. When your phone is set up as a key, you can see it’s location, speed, status, see if any doors or windows are open etc all from your phone anywhere in the world. If your Tesla is stolen, you’ll know exactly where it is. And not only that but you can also start flashing the lights, honking the horn and you can slow the car down to 10km/h. Lastly, if all that fails and your car is broken into, you can set a “pin to drive” where you have to enter a 4-10 digit pin of your choosing else it locks the car out. Tesla’s are some of the most theft proof cars on the market.
    1
  36. Actually probably won’t. They’ll retrofit existing fuel stations. So you just keep the existing attendants longer.
    1
  37. Because they wouldn’t work
    1
  38. Nope
    1
  39. Now factor in that you have to replace a Tesla battery only approximately every 300k-500k miles. And a fuel cell every 150k miles.
    1
  40. Oh and the fuel tanks every 4 years too.
    1
  41. in what way is a hydrogen car better than an battery car exactly.
    1
  42.  @josedearimateiayjesus2178  Actually there is no naturally occurring hydrogen in its pure form on earth. it takes an extraordinarily large amount of energy to free it from water or fossil fuels. This makes it very expensive. It takes around 3.5 times more energy per miles worth of hydrogen than 1 miles worth of electricity for a BEV.
    1
  43. You’re not getting a nuclear car. Give it up
    1
  44. You wouldnt
    1
  45. Why do so many people think you can fill a car up with water and drive it. You can’t. You never will. It’s impossible
    1
  46. how is it narrow minded?
    1
  47. Hydrogen cars already come with batteries. But not for more mileage, but because without them the Fuel Cell cant provide enough power to adequately accelerate the vehicle. In addition, due to the laws of thermodynamics, we already know there is little room for improvement to hydrogen efficiency, maybe 5% or 10% over the full cycle optimistically. Additionally, Hydrogen is light but it takes up a lot of volume. Lets compare the pair. The Toyota Mirai and the similarly sized Tesla Model 3. Tesla Model 3 has 0-60mph acceleration of 3.2s. The Mirai does this in 9.2 seconds. The Tesla Model 3 has an extraordinarily large trunk, with an additional trunk in the front. The Mirai has no front trunk and a trunk so small, that a Toyota Yaris which is less than half its size has a whopping 100L more than the Mirai, due to the fact that the Mirai carries 141L of tanks to travel its 400 mile range. Thats a larger fuel capacity than a ford F150! The Model 3 has class leading cabin space, which means there is more than enough space to fold the rear seats to extend the boot. The Toyota Mirai has so little cabin space that you cant fold the rear seats down. The Model 3 has a range of 325 miles, the Mirai has a range of 400 miles, only 75 miles more range. So for an unusable boot space, Pathetic acceleration, cramped cabin and fuel costs putting it around 20x more expensive per miles than the Tesla, you only get an additional 75 miles. Thats including the fact that the Mirai HAS lithium Ion Batteries on board to store electricity.
    1
  48. I wouldn’t count on that. Hydrogen cars are incredibly impractical and inefficient compared to BEV’s. And they’re also not failing. They’re now some of the most popular cars in the world at current and the fastest growing sector of the auto industry globally. And I love to see your “maths and science” which says otherwise.
    1
  49. Except you’d need and industrial size compressor to compress it to 42x the maximum pressure of a steel barbecue gas bottle, so that you could get it into your fuel tank in the first place. And a car battery would only be able to produce 0.007kg of hydrogen. You need 5kg to fill a typical hydrogen car. So you’d need 677 fully charged 12v car batteries to produce 1 full tank of hydrogen. And more energy again to compress said hydrogen. And around 45L of water to produce enough for that 5kg tank of hydrogen. Turns out it ain’t so simple or easy…. Or cheap.
    1
  50.  user-ky7iz6up1v but by all means. Make your own. I’m sure it won’t take you long to expend 677 car batteries worth of energy to creat 1 full tank of hydrogen. Definitely won’t take you several weeks to complete.
    1