Hydrogen Fuel - Energy

Hydrogen Fuel Cell Engines module 1: Hydrogen PROPERTIES CONTENTS ATOMIC PHYSICAL ODOR, COLOR AND DENSITY AND RELATED CHEMICAL Hydrogen GAS KEY ENGINEERING PARAMETERS AND THEIR VOLUME AND MASS AND MASS Hydrogen Fuel Cell Engines and Related Technologies: Rev 0, December 2001 Hydrogen Fuel Cell Engines module 1: Hydrogen PROPERTIES OBJECTIVES At the completion of this module , the technician will understand: the atomic structure of Hydrogen the physical and chemical properties of Hydrogen how Hydrogen compares to hydrocarbon fuels in terms of Energy , flammability and safety the fundamental gas laws how pressure , temperature and mass flow are measured the units of pressure , temperature, volume, mass and mass flow as they relate to gases Hydrogen Fuel Cell Engines and Related Technologies: Rev 0, December 2001 Hydrogen Fuel Cell Engines module 1: Hydrogen PROPERTIES PAGE 1-1 Key Points & Notes Atomic Structure Hydrogen is by far the most plentiful element in the uni-verse, making up 75% of the mass of all visible matter in stars and galaxies.

MODULE 1: HYDROGEN PROPERTIES PAGE 1-5 The boiling point of a pure substance increases with applied Key Points & Notes pressure—up to a point. Propane, with a boiling point of –44 ºF (–42 ºC), can be stored as a liquid under moderate pres-sure, although it is a gas at atmospheric pressure. (At tem-

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  User, Pressure, Energy, Module, Hydrogen, Pers, P ressure

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