Light, Water, Hydrogen: The Solar Generation of Hydrogen by Water Photoelectrolysis

  • Craig A.Grimes, Oomman K.Varghese, Sudhir Ranjan
  • Издательство: Springer
  • ISBN: 0387331980
  • Год издания: 2008
  • Кол.страниц: 561
  • Язык: английский
  • Формат: PDF
  • Размер: 14.4 Mb
In addition to domestic animals the earliest records of mankind indicate that slavery, until the use of coal became widespread, has always been a significant aspect, or part, of nearly every society. Consider for example ancient Attica (Greece), in which 115,000 out of a total population of 315,000 were slaves [1]. For the lucky rulers slaves represented power, Joule/second or Watt. On a steady state basis a healthy adult generates about 100 Watts, or 100 J/s, while a highly conditioned endurance athlete can generate about 300 W for perhaps an hour. Today we obtain our energy from fossil fuels, that magical brew of latent-heat chemistry that allows us to run the world without having to rely on people or domestic animal power. We owe much if not all of modern civilization to fossil fuels, no more than stored solar energy, which provide the 40-plus Terawatts that annually powers the ? 7,000,000,000 people on this planet, with our fossil fuel burn rate growing to accommodate the annual increase of some additional 100,000,000 or so souls.

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