Fuels - which when combusted can lead to environmental...

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Fuels Different types of fuels contain varying amounts of carbon, hydrogen and oxygen. The greater the percentage of carbon and hydrogen in the fuel the higher the fuel value Fuel C (%) H (%) O (%) Fuel Value (kJ/g) Wood 50 6 44 18 Bituminous Coal 77 5 7 32 Gasoline 85 15 0 48 Hydrogen 0 100 0 142 The average daily consumption of energy per person in the U.S. is about 8.8 x 10 5 kJ, or about 100 times greater than our food energy requirements Our energy comes primarily from the combustion of fossil fuels (hydrocarbons derived from ancient plants and animals) Coal represents 90% of the fossil fuels on earth. However, it typically contains sulfur,
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Unformatted text preview: which when combusted can lead to environmental pollution (acid rain) Solar energy : on a clear day the sun's energy which strikes the earth equals 1kJ per square meter per second. If we could utilize the solar energy which strikes 0.1% of the U.S. land mass we would have enough power to run the country Hydrogen : clean burning (produces only water) and high fuel value. Hydrogen can be made from coal as well as methane C( coal ) + H 2 O( g ) -> CO( g )+H 2 ( g ) CH 4 ( g ) + H 2 O( g ) -> CO( g ) + 3H 2 ( g )...
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