As someone who used to convert pick up trucks to LNG and propane, I can only say the cost of storing LNG and hydrogen gases with similars pressure or cooling demands, safely and efficiently, is simply pricing both gases out of the competition for alternate fuels. A typical non cooled pressure tank can hold at best 1/2 the volume of that of diesel or gasoline. Even with new tanks of lower weight, the tank weight to fuel content ratio makes it simply not feasible to use them on planes. I.e., a LNG tank, similar to a hydrogen tank, of 358kg loaded, barely holds 118 litres. Let this sink in, less than 1/3rd of the combined weight is actual fuel. Now compare that to the weight of a gosoline or diesel tank. A 200l Diesel tank to be mounted on a vehicle can weigh as low as 33kg, + 175 kg for the fuel so the tank only weighs less than 1/6th of the combined weight. See the problem here?
Bernard "Hydrogen is not a new technology, we can produce it since around 1900" Yes, but that counts for almost every "modern" technology, it's just that between the Rockefeller area and the seventies oil crisis, we simply lost interest in developing alternative technologies.
As someone who used to convert pick up trucks to LNG and propane, I can only say the cost of storing LNG and hydrogen gases with similars pressure or cooling demands, safely and efficiently, is simply pricing both gases out of the competition for alternate fuels.
A typical non cooled pressure tank can hold at best 1/2 the volume of that of diesel or gasoline. Even with new tanks of lower weight, the tank weight to fuel content ratio makes it simply not feasible to use them on planes. I.e., a LNG tank, similar to a hydrogen tank, of 358kg loaded, barely holds 118 litres. Let this sink in, less than 1/3rd of the combined weight is actual fuel. Now compare that to the weight of a gosoline or diesel tank. A 200l Diesel tank to be mounted on a vehicle can weigh as low as 33kg, + 175 kg for the fuel so the tank only weighs less than 1/6th of the combined weight. See the problem here?
Bernard "Hydrogen is not a new technology, we can produce it since around 1900"
Yes, but that counts for almost every "modern" technology, it's just that between the Rockefeller area and the seventies oil crisis, we simply lost interest in developing alternative technologies.
No engineer would use hydrogen for aviation. It would be better to produce green kerosene.