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Energy density - Wikipedia
https://en.wikipedia.org/wiki/Energy_density
WebSpecific energy (MJ/kg) Energy density (MJ/L) Specific energy Energy density (W⋅h/L) Comment Hydrogen, liquid: 141.86 119.93 10.044 (HHV) 8.491 (LHV) 39,405.6 (HHV) 33,313.9 (LHV) 2,790.0 (HHV) 2,358.6 (LHV) Energy figures apply after reheating to 25 °C. See note above about use in fuel cells.
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Hydrogen Storage | Department of Energy
https://www.energy.gov/eere/fuelcells/hydrogen-storage
WebOn a mass basis, hydrogen has nearly three times the energy content of gasoline—120 MJ/kg for hydrogen versus 44 MJ/kg for gasoline. On a volume basis, however, the situation is reversed; liquid hydrogen has a density of 8 MJ/L whereas gasoline has a density of 32 MJ/L, as shown in the figure comparing energy densities of fuels based on …
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Energy Density of Hydrogen - The Physics Factbook
https://hypertextbook.com/facts/2005/MichelleFung.shtml
WebHydrogen has one of the highest energy density values per mass. Its energy density is between 120 and 142 MJ/kg. This means that for every 1 kg of mass of hydrogen, it has an energy value of 120-142 MJ. It is highly flammable, needing only a small amount of energy to ignite and burn. Hydrogen burns cleanly.
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Hydrogen Compared with Other Fuels | Hydrogen Tools
https://h2tools.org/bestpractices/hydrogen-compared-other-fuels
WebProduced by the U.S. Department of Energy, the Hydrogen Data Book. provides useful data on hydrogen properties, including: Chemical characteristics of hydrogen (e.g., density, flammability range, boiling point characteristics, heating values)
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Energy Content of Hydrogen: A Comparison | Sustainability Info
https://sustainabilityinfo.com/energy/energy-content-of-hydrogen-a-comparison/
WebMar 31, 2023 · Gaseous hydrogen has a lower volumetric energy density compared to other fuels, which means it takes up more space for the same amount of energy. However, its gravimetric energy density (energy per unit of mass) is higher. Gaseous hydrogen has a lower heating value (LHV) of about 120 MJ/kg and a higher heating value (HHV) of …
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Hydrogen Basics - Alternative Fuels Data Center
https://afdc.energy.gov/fuels/hydrogen_basics.html
WebThe energy in 2.2 pounds (1 kilogram) of hydrogen gas is about the same as the energy in 1 gallon (6.2 pounds, 2.8 kilograms) of gasoline. Because hydrogen has a low volumetric energy density, it is stored onboard a vehicle as a compressed gas to achieve the driving range of conventional vehicles.
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Hydrogen Production, Distribution, Storage and Power Conversion …
https://www.sciencedirect.com/science/article/pii/S2666821121000880
WebNov 15, 2021 · In addition to zero CO 2 emissions, hydrogen has several other attractive properties such as higher gravimetric energy content and wider flammability limits than most fossil fuels.
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Hydrogen energy systems: A critical review of technologies
https://www.sciencedirect.com/science/article/pii/S1364032121004688
WebAug 1, 2021 · The high mass-based energy density of hydrogen makes it one of the most promising future fuels. Hydrogen contains 33.33 kWh energy per kilo, compared to 12 kWh of petrol and diesel [39]. However, storing the same amount of hydrogen requires a …
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Hydrogen Factsheet | Center for Sustainable Systems
https://css.umich.edu/publications/factsheets/energy/hydrogen-factsheet
WebHydrogen has the highest energy per mass of any fuel at 120 MJ/kgH₂ on a lower heating value basis, but a low volumetric energy density of 8 MJ/l for liquid hydrogen, compared to a volumetric energy density of 32 MJ/l for gasoline. 4.
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Hydrogen | Understand Energy Learning Hub
https://understand-energy.stanford.edu/energy-currencies/hydrogen
WebHydrogen has very low energy density by volume but is extremely energy dense by weight. Although it is currently used primarily as a feedstock for oil refining, chemicals, and fertilizers, hydrogen shows promise as a clean fuel for heavy-duty transportation, steel-making, heating, and energy storage.
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