notes-week7

notes-week7 - Satellite Picture of World electrical usage...

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Unformatted text preview: Satellite Picture of World electrical usage Power energy / time= joule/sec=Watt 1 foot-pound/hour 1.16 Watt 1 kiloCalorie/hour 1.16 W 1 kiloCaloris/min 69.77 W Typical lightbulb 100 W 1 horsepower 745.7 W 1 hairdryer 1 kW (k = 10 3 ) 1 gallon gas/hour 39 kW 1 gallon gas/minute 2.5 MW (M=10 6 ) Pulsed Yag laser 150 MW 1 nuclear reactor 3 GW (G = 10 9 ) Lightning strike 5 GW 1 million barrels oil/day 73 GW NIF laser 360 TW (T=10 12 ) US electricity (average) consumption 3.41 TW Energy Something with enormous power may not be on for very long (i.e.) the NIF laser ON= 10-9 sec E= 3.6X10 14 X 5X10-9 = 1.8X10 6 Joules Energy of 1 ton high explosives = 4.2X10 9 J Hydrogen Bomb (1 MT) = 4.2X10 15 J Energy = Power * time Table 3-4a, p. 90 Table 3-4d, p. 91 250,000 food calories Fig. 3-6, p. 85 Energy use in developing countries Fig. 1-2, p. 7 Energy Consumption in the US over last 100 years oil imports exceed production 1 Quad = 10 15 Table 3-4d, p. 91 Fig. 1-4, p. 9Fig....
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notes-week7 - Satellite Picture of World electrical usage...

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