Assertion: Around 27 million tons of hydrogen would be required to replace the jet fuel consumed in 2023 in the United States

It is impossible to estimate the required amount of hydrogen with 100% certainty and this should only be taken as a rough estimate. For this estimate, we assume that the engines in hydrogen planes will be exactly as efficient as conventional jet engines. However, there is currently no way to know whether this will be true. It is possible that hydrogen jets one day become more efficient than existing jet engines and the amount of hydrogen required to replace one gallon of jet fuel may be less than we anticipate. On the other hand, they may end up being significantly less efficient and require even more hydrogen to replace one gallon of jet fuel. Assuming similar efficiencies is the simplest way to create an estimate for hydrogen demand until hydrogen jets are built and their technical specifications become public knowledge.

Around 24.76 billion gallons of jet fuel were consumed in the United States in 2023. To determine how much liquid hydrogen would be required to replace 24.76 billion gallons of jet fuel, we first need to convert the volume of jet fuel to liters. Since one gallon is equivalent to 3.78541 liters, 24.76 billion gallons of jet fuel is equal to approximately 93.706 billion liters. To determine how much liquid hydrogen would be required to replace 24.76 billion gallons of jet fuel, we first need to convert the volume of jet fuel to liters. Since one gallon is equivalent to 3.78541 liters, 24.76 billion gallons of jet fuel is equal to approximately 93.706 billion liters.

Given that it takes 4.09 liters of liquid hydrogen to replace one liter of jet fuel, we then multiply the total liters of jet fuel by this conversion factor. This results in approximately 383.25 billion liters of liquid hydrogen.

Using the density of liquid hydrogen, which is about 0.071 kilograms per liter, we can convert this volume to mass. Multiplying 383.25 billion liters by the density, we find that approximately 27 million tons (27 billion kilograms) of liquid hydrogen would be needed to replace 24.76 billion gallons of jet fuel.