Selected Properties of Hydrogen (engineering Design Data) |
Contents
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Page 1-31 - The index of refraction n^ of a medium is the ratio of the speed of light in a vacuum to the speed of light in the medium, n^ = C/Cm.
Page 3-15 - ... threat than methane or gasoline. Unconfined fuel-air explosions are not normally very destructive; however, confined fuel-air explosions can be devastating and hydrogen presents the greatest confined-explosion threat of the three fuels considered. For equivalent energy storage or for equivalent volume storage, hydrogen has the least theoretical explosive potential of the three fuels considered — even though it has the highest heat of combustion (and explosive potential) on a mass basis. Hydrogen...
Page 2-14 - The latent heat of sublimation for water is the -amount of heat required to convert one gram of ice into vapor at the same temperature without passing through the intermediate liquid state. It is equal to the sum of the latent heat of vaporization and the latent heat of fusion.
Page 3-11 - ... burning velocities indicate a greater tendency for the combustible gas mixture to support the transition from deflagration to detonation in long tunnels or pipes. In general, faster-burning gases have smaller quenching gaps and flame arresters for faster-burning gases must have smaller apertures [51]. The quenching gap is the passage gap dimension required to prevent propagation of an open flame through a flammable fuel-air mixture that fills the passage and it is clearly distinguishable from...
Page 3-18 - When the diameter of one tank is less than one-half the diameter of the adjacent tank, the distance between the two tanks shall not be less than one-half the diameter of the smaller tank.
Page 1-43 - Definition - Surface tension is defined as the amount of work required to increase the surface area of a liquid by one unit of area. Note that this property is defined only for liquid in coexistence with the vapor phase. Tables of Values...
Page 2-13 - The latent heat of fusion is the amount of heat required to melt a unit mass of a substance at constant temperature and pressure at temperatures above the triple point.
Page 6-282 - Consensus standards organization means the American Society for Testing and Materials (ASTM), American National Standards Institute (ANSI), American Society of Mechanical Engineers (ASME...
Page 1-48 - Si/SiO2 boundary and a large number of unpassivated silicon dangling bond sites in the oxide. Such a combination of defects centers can not be in thermodynamic equilibrium. Thermodynamics requires that a system in equilibrium will reach the lowest Gibbs free energy G [30]: ONH-TS, [1] where H is enthalpy, T is absolute temperature and S is entropy.
Page 1-34 - The heat evolved or absorbed when a substance is dissolved in a solvent. —of sublimation: The heat required to convert a unit mass of a substance from the solid to the vapor state (sublimation) at a specified temperature and pressure without the appearance of the liquid state. —of transition: The heat evolved or absorbed when a unit mass of a given substance is converted from one crystalline form to another.