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ees_gen_enrg_pic - What is Energy ? mv 2 mgh Pext V Cv T...

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What is Energy ? • ½ mv 2 • mgh • P ext Δ V • C v Δ T • I 2 R • h ν • mc 2 a 2 trillion dollar per year global industry
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I M T How much energy do we use each year?
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I M T How much energy do we use each year? ~ 400,000,000,000,000,000,000 Joules/year (116,000,000,000,000 Kilowatt-hours / year) 1 Watt = 1 Joule used per second 12.8 TeraWatts Global average = 2000 Watts per person (24 hrs/day, 365 days/year)
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(Image by MIT OCW)
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The issues: Increasing energy demand by increasing population Associated CO 2 emissions and accumulation Depletion of petroleum and other resource reserves 1.6 billion people without access to electricity or other forms of “clean” energy Energy-related security challenges, including -- uneven distribution of resources (the Tenth Commandment does not apply!) -- vulnerability to threats and natural disasters -- geopolitical instability and tensions -- nuclear weapons proliferation
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I M T What are our options for meeting the world’s
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This note was uploaded on 11/28/2011 for the course CHEM 5.74 taught by Professor Robertfield during the Spring '04 term at MIT.

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ees_gen_enrg_pic - What is Energy ? mv 2 mgh Pext V Cv T...

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