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Hydrogen can be deployed as a fuel in two distinct ways: in fuel cells which produce electricity, and via combustion to generate heat. [58] When hydrogen is consumed in fuel cells, the only emission at the point of use is water vapor. [58] Combustion of hydrogen can lead to the thermal formation of harmful nitrogen oxides emissions. [58]
Aftermarket kits are available to convert vehicles to run on LNG or CNG and gasoline. In the United States, natural gas is cheaper than gasoline. Still, CNG at typical pressures requires more frequent refueling because it contains only a quarter of the energy per unit volume of gasoline, [1] whereas LNG contains only 80%.
The gaseous state of water is lighter than air (density 0.804 g/L at STP, average molecular mass 18.015 g/mol) due to water's low molar mass when compared with typical atmospheric gases such as nitrogen gas (N 2). It is non-flammable and much cheaper than helium. The concept of using steam for lifting is therefore already 200 years old.
But unlike gasoline cars, for which there's a well-developed set of more than 100,000 fuel stations nationwide, hydrogen drivers are utterly dependent on both a reliable supply of the gas itself ...
Refueling a hydrogen fuel cell car is more like filling up at a gas station than recharging an EV. Michael Blackshire / Los Angeles Times Fuel cell cars are a pillar of the state’s ambitious ...
Gasoline is the most widely used liquid fuel. Gasoline, as it is known in United States and Canada, or petrol virtually everywhere else, is made of hydrocarbon molecules (compounds that contain hydrogen and carbon only) forming aliphatic compounds, or chains of carbons with hydrogen atoms attached.
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In addition diesel fuel has slightly higher energy density by volume than gasoline. This makes Diesel engines capable of achieving much better fuel economy than gasoline vehicles. Biodiesel (fatty acid methyl ester), is commercially available in most oilseed-producing states in the United States. As of 2005, it is somewhat more expensive than ...
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