HYARC
Hydrogen Properties
Discover the Remarkable Properties of Hydrogen

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Comparative Properties of Hydrogen and Other Fuels
PropertyUnitsHydrogenMethanePropaneMethanolEthanolGasolineChemical Formula H2CH4C3H8CH3OHC2H5OHCxHy (x = 4 - 12)Molecular Weight [a, b] 2.0216.0444.132.0446.07100 - 105Density, NTP [3, a, c]kg/m³0.08380.6681.87791789751 lb/ft³0.…
Energy Equivalency of Fuels (LHV)
Contains a comparison of the amount of fuel necessary to provide the same energy unit based on the lower heating values.
Fuel Cell Types - Descriptions and Characteristics
Explains the reactions, electrolyte material, applications, and other information about the various types of fuel cells.
Hydrogen Fuel Quality Standards
Presents hydrogen fuel specifications currently prescribed by the State of California.Updated July, 2019.
Hydrogen Production Energy Conversion Efficiencies
Contains energy inputs, energy outputs, and overall conversion efficiencies for various hydrogen production processes.
Hydrogen Thermal Conductivity at different temperatures and pressures
Hydrogen Thermal Conductivity at different temperatures and pressures.
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Lower and Higher Heating Values of Hydrogen and Other Fuels
Contains lower and higher heating values for hydrogen and various solid, liquid, and gaseous fuels.

This material was prepared as an account of work sponsored by an agency of the United States Government.
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The portal brings together and enhances the utility of a variety of tools and web-based content on the safety aspects of hydrogen and fuel cell technologies to help inform those tasked with designing, approving or using systems and facilities, as well as those responding to incidents.

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