How many kilograms of gasoline is equivalent to one kilogram of hydrogen?
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How many kilograms of gasoline is equivalent to one kilogram of hydrogen? @Nuts @Majestic Ultraman. @654262293
The weights are equal; is P meant to represent the calorific value? Efficiency in energy conversion?
Compare the calorific value: for the same vehicle, how long can it run?
This isn’t very meaningful; a 50L gasoline tank holds only 37 kg of gasoline, so the weight of the fuel itself can be practically ignored. What’s important is the volume required to carry this fuel and the rate at which it can be added. Heat value of hydrogen: 143 kJ/g, or 143 MJ/kg; gasoline has a heat value of around 46 MJ/kg. The difference is roughly 3 times: 37 kg of gasoline is equivalent to 12 kg of hydrogen. 12/2*24 = 144 Nm3. To obtain this amount, 14.4 containers with a capacity of 50 L at 20 Mpa are needed, which is roughly one standard set of containers, with dimensions of 1.15*1.15*1.8 m. Two bottle sets can be loaded onto a large truck; upon arrival at the supply station, the gas connectors are disconnected, and the bottle sets are lowered using a forklift for replacement – this is feasible
Unless extremely effective adsorbents or solvents are developed, such as ones that can dissolve acetylene just like propane does, so that the pressure doesn’t become very high, and which can then release that substance to maintain a certain pressure when in use. Otherwise, I can’t understand what the future holds for hydrogen-powered vehicles. Natural gas taxis, with a molecular weight of 16, are able to store more energy than hydrogen, whose molecular weight is 2
Because according to what I’ve read, the current price of liquid cyanine is 30 yuan per kilogram, which is roughly equivalent to the price of 4 liters of gasoline
How can liquid hydrogen at minus 200 degrees Celsius be stored in a vehicle? Currently, the price of hydrogen at the factory is 3.4 yuan per m3, which is equivalent to 38 yuan per kg; hydrogen is not expensive to begin with. The difficulty lies in storing it in the car
In the future, with hydrogen fuel cells, every car will have a large tank on it and be able to race at high speeds: lol
Based on my long-term experience in the coal chemical industry, I am not optimistic about hydrogen energy. First, the efficiency of converting it into hydrogen is very low at present. Second, storing hydrogen poses a significant problem, as its energy density is too low. Third, it lacks safety; as mentioned above, in the future each vehicle will need to be equipped with airbags