Hydrogen can also serve as fuel for internal combustion engines, but unlike with fuel cells, will produce tailpipe emissions and is less efficient. Learn more about fuel cells. The energy in 2.2 pounds (1 kilogram) of hydrogen gas contains about the same as the energy in 1 gallon of gasoline. Because hydrogen has a low volumetric energy density, additional steps are needed to store enough hydrogen onboard fuel cell vehicles to achieve the driving range of conventional vehicles.
Wiktionary (0.00 / 0 votes) Rate this definition: zeppelin (Noun) A type of large German dirigible airship of the early 20th century designed to carry passengers or bombs. Zeppelin (ProperNoun) A German manufacturing company, famed for building the zeppelin airships. Origin: Named after Ferdinand, Count von Zeppelin.
Archiv der Luftschiffbau Zeppelin GmbH. ZEPPELIN was the name given to the duralumin-internal-framed, dirigibles invented by the persistent Count Ferdinand von Zeppelin. The LZ1 made its initial flight from a floating hangar on Lake Constance, near Friedrichshafen in Southern Germany, on 2 July 1900.The Zeppelins were used in both war and peace.rchiv der Luftschiffbau Zeppelin GmbH. ZEPPELIN was the name given to the duralumin-internal-framed, dirigibles invented by the persistent Count Ferdinand von Zeppelin. The LZ1 made its initial flight from a floating hangar on Lake Constance, near Friedrichshafen in Southern Germany, on 2 July 1900.