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I wouldn't say "the least of the problems". Holding hydrogen in a tank is very hard, it leaks out of conventional materials used for tanks, it is highly flammable, and the flames are almost invisible.Tanks are expensive, and if manufacturers want to build hydrogen cars they are going to have to come up with a very cheap tank.However, there is good reason for heavy industry to use hydrogen in machinery like trains, ships, electricity generators. The fuel tanks weight doesn't cause the same issue as it does in a passenger vehicle.Current hydrogen powered cars use a tank that has to be lightweight, high impact strength, and no leakage. There are several types of tanks.Type I: All metal construction;Type II: Metal with hoop composite overwrap;Type III: Metal liner with full composite overwrap. Composite carries all load;Type IV: Polymer liner with a full composite overwrap;Type V: Linerless composite vessels.Last I read, type IV is the current tank style used in cars.Type I is currently the most widely used vessel, accounting for approximately 90% of the market. However, Type I is more than three times heavier than Type III and Type IV, whereas Type IV costs over 300% more than Type I. Type II is over 50% more expensive and 30–40% lighter than Type I. Type III is 50% lighter but costs more than twice as much as Type II. Additionally, Type III and Type VI offer the advantage of hydrogen storage at higher pressures for higher energy storage density.I think that Andrew Forrest's team have been trying to tell him this for quite a while, and he's only come to accept the difficulty after seeing the bank balance drop with no return, and the possible price drop in iron ore when China struggles to sell their merchandise to the USA.
I wouldn't say "the least of the problems". Holding hydrogen in a tank is very hard, it leaks out of conventional materials used for tanks, it is highly flammable, and the flames are almost invisible.
Tanks are expensive, and if manufacturers want to build hydrogen cars they are going to have to come up with a very cheap tank.
However, there is good reason for heavy industry to use hydrogen in machinery like trains, ships, electricity generators. The fuel tanks weight doesn't cause the same issue as it does in a passenger vehicle.
Current hydrogen powered cars use a tank that has to be lightweight, high impact strength, and no leakage. There are several types of tanks.
Last I read, type IV is the current tank style used in cars.
Type I is currently the most widely used vessel, accounting for approximately 90% of the market. However, Type I is more than three times heavier than Type III and Type IV, whereas Type IV costs over 300% more than Type I. Type II is over 50% more expensive and 30–40% lighter than Type I. Type III is 50% lighter but costs more than twice as much as Type II. Additionally, Type III and Type VI offer the advantage of hydrogen storage at higher pressures for higher energy storage density.
I think that Andrew Forrest's team have been trying to tell him this for quite a while, and he's only come to accept the difficulty after seeing the bank balance drop with no return, and the possible price drop in iron ore when China struggles to sell their merchandise to the USA.
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