Comments by "Simon" (@Simon-dm8zv) on "Undecided with Matt Ferrell" channel.

  1.  @robsengahay5614  Well shipping might indeed be a good application of hydrogen. Heavy trucks maybe as well, but when we look at the test results of the Tesla Semi things look great for batteries. A truck on hydrogen is a lot more expensive to run per kilometer / mile than a battery truck. This is very important for a transportation company. Plus, truck drivers are legally obliged to take a rest every few hours so this makes a perfect situation for plugging that cable in.
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  2. lol! One of the worst explanations for why hydrogen is not taking of 'yet' I have seen so far. Quite creative though..
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  3. A heat recovery system is what you are looking for. These have been around for quite a while.
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  4. not at all
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  5.  @robsengahay5614  Could be useful for seasonal storage in the future, not for driving.
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  6. Exactly. Hydrogen is dumb for pretty much all road transport.
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  7. 1. There are no signs of lithium shortage. 2. Storing electricity in hydrogen is very inefficient so you would be literally throwing energy away. 3. Hydrogen for FCE cars needs to be compressed to several hundreds of bar. You don't want that to be happening in everyone's backyard. 4. You would only need one third of solar panels on your roof to charge a BEV and drive the same amount of kilometers.
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  8. Nope
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  9. Sure, but we need to be ready when real numbers of used batteries are becoming available. Recycling is not only a matter of gathering material for new batteries, it's also about properly disposing the waste.
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  10. Battery busses are already there, battery trucks are around the corner and trains should simply use overhead lines.
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  11. So many misconceptions. 1. Energy consumption for preheating electric vehicles really is PEANUTS compared to the insane losses of energy in hydrogen fuel cell cars. 2. EVs don't charge all together at the same time, just like conventional ICE cars and hydrogen cars don't stand in line every day at the same time. 3. EVs charge slowly when you sleep, so you actually save on time for not having to wait for 'filling up'. By the way fast charging is only a matter of half an hour or less. 4. Burning hydrocarbons is FAR worse than producing and using any electric car. Your thought is wrong.
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  12. Exactly, you nailed it.
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  13. bart h Would still increase air friction. You cannot harvest energy from nothing. It will always require at least the same amount of energy to produce it. ‘Perpetuum mobile’ might be an interesting read for you on wikipedia. Only thing you can do is putting an external source of energy to use like the sun by equipping the vehicle with solar panels. Although this will only have a marginal effect on range.
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  14. Japan imports massive amounts of H2 by shipping it from Australia where it is made from coal.
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  15. Mostly not.
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  16. Exactly sir.
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  17. Exactly
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  18. Feeding hydrogen into an internal combustion engine is even less efficient than converting it back to electricity and powering an electric motor.
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  19. Battery busses and trucks are already there.
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  20. lol so what do you propose
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  21. Yep 😀
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  22.  @TheMak445  Most heavy machinery will do fine on batteries. Battery electric cranes, diggers and trucks already exist and this is just the beginning. Hydrogen will only remain a niche.
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  23. Yeah sure, GM going for some scam technology from the 90's.
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  24. He explains in the video that his house will use a ground source heat pump.
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  25. How do you want to make hydrogen? Natural gas steam reforming or electrolysis?
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  26. But it will always remain much more expensive than electricity.
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  27.  @TheCyberFatih  Exactly
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  28. Hydrogen does not generate power. It stores it.
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  29. The efficiency problem is impossible to solve because you can't skip laws of physics. Apart from that, fuel cell cars are a lot more complicated compared to BEVs and with the advancement of batteries there is probably zero reasons to even think about hydrogen in 10 years - let alone in 30 years.
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  30. It's quite rare. What do you propose instead?
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  31. It’s the other way around. You can make your own electricity and charge your car much easier and with only a third of the amount of energy.
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  32. "road legal cars are only about 20% to 35% when used to power a car" and "Engines in large diesel trucks, buses, and newer diesel cars can achieve peak efficiencies around 45%" https://en.wikipedia.org/wiki/Engine_efficiency
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  33. EVs are not considerably heavier than fuel cell cars. If you want to increase the range of a fuel cell car, you need larger tanks which results in both more weight and volume.
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  34. HHO generators in cars are useless and the so called improvement of efficiency is a hoax. Apart from that, this has nothing to with the subject of the video that is about FCEVs.
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  35. Smith Aviation Refinements yea
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  36. Will never happen. Fuel cells are dead for cars and definitely for small cars.
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  37. Sounds really cheap from a European perspective.
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  38.  @user-uu6bi4tn5o  The problem is longevity. They lose capacity much faster than lithium ion batteries do. Research is being done, but there is no breakthrough yet.
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  39.  @user-uu6bi4tn5o  Exactly. Lithium-ion is here to stay.
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  40. "if elon musk had entered with H2-cars so violently as he did with batteries" Lol of course not. You cannot change the hideously low efficiency. Elon knew that. Fuel cells in vehicles are dumb.
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  41. Paul Schubert You obviously have no clue about the capabilities of batteries and the current status of the development. If fuel cells were not dumb, all Tesla’s would have them. Elon knows physics. Barely any companies make hydrogen cars because barely anyone wants to buy them because they are so damn inefficient, expensive to drive and very complex. Also, batteries do not lose efficiency or power over time. They lose capacity. Not 70% over 10 years lol.. Tesla Model S batteries are still doing fine after 7 years. Newer batteries will last longer than the car itself. Hydrogen fuelcells wear out much faster than any battery.
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  42.  @paulschubert8490  "Fuel cell degradation, on the other hand, is another major problem fuel cell vehicles face. This is mainly caused by the starts/stops, acceleration/deceleration, membrane humidity variation and a high load of the engine. When the vehicle operates on various driving patterns, the fuel cell will degrade which eventually affects the fuel economy." https://www.sciencedirect.com/science/article/abs/pii/S0360319919303234
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  43. Paul Schubert Exactly
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  44. ​ @johannesdeman411  Stationary batteries are much more simple, cheap and efficient. Weight is not an issue. Also more and more cars are currently equipped with bi-directional charging capabilities which enables you to power your house with your car battery. By the way, I am not talking about off grid situations here. Hydrogen could play a role in large scale centralised seasonal energy storage, but not for small scale day to day storage. Molten salt solar plants have proven themselves as great power generators and short term storage facilities. These are more efficient than electrolysers and fuel cells.
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  45. Johannes de Man a fuel cell can be 60% efficient, but an electrolyzer is about 75%. Together makes only 45% (without compression!). Charging and discharging a battery is 90% efficient. So solar + stationary battery + grid is the way to go.
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  46. Even if the electricity comes from fossil fuels for a large part using heat pumps still causes less CO2.
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  47. 1. fuel cell = electric 2. hydrogen is super inefficient and thus expensive
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  48.  @IrelandVonVicious  Scale does not solve the efficiency problem. Hydrogen will always remain a lot less efficient.
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  49.  @IrelandVonVicious  Mini vans can easily be made with electric drivetrains and plenty of range. In Europe it is rather normal to have public chargers at parkings and along the street for slow charging. You don't need a private garage or driveway to charge your car while being at home.
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  50.  @IrelandVonVicious  Cobalt will be a thing of the past eventually. Electrolyzers and fuel cells also require 'rare' metals like platinum and these cars also have li-ion batteries.
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