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Energy Primer: Some Background on Energy Systems. Economics 331b Yale University Note: These slides are products of a large number of scholars in the natural and social sciences. Implicit thanks go to all who have made these available. Some Important Units of Measurement. Units.
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Energy Primer:Some Background on Energy Systems Economics 331b Yale University Note: These slides are products of a large number of scholars in the natural and social sciences. Implicit thanks go to all who have made these available.
Units Scientific units: 1 Joule (J) is the MKS unit of energy, equal to the force of one Newton acting through one meter. 1 Watt is the power of a Joule of energy per second Multiplicative measures; kilo-x = 10^3 x mega-x = 10^6 x giga-x = 10^9 x tera-x= 10^12 x peta-x = 10^15 x exa-x = 10^18 x Commonly used non-scientific units: A BTU (British Thermal Unit) is the amount of heat necessary to raise one pound of water by 1 degree Fahrenheit (F). 1 BTU = 252 cal = 1.055 kJ “barrel of oil” = 42 gallons =1/7 of a metric ton
Units of energy system Source: Gruebler et al., Energy Primer
Heat content of fuels MbtuGJ 1 barrel of crude oil 5.80 6.12 1 ton of crude oil 39.68 41.87 1 short ton of coal 25.18 26.57 1000 ft3 of natural gas 1.000 1.055 1 MBtu = 106 Btu (IT) 1 GJ = 109 J
Examples of Power and Energy (ranked by power ratings) Source: Nakicenovic
Overview of energy system Capital, labor, … Non-energy goods and services Capital, labor, … Utility: U(c1, c1, …, cn) Energy goods and services (passenger miles, warm house, hot coffee, … Energy resources (oil in ground,…) Energy fuels (gasoline, electricity, …)
U.S. Primary Energy Consumption by Source and Sector, 2007 (Quadrillion Btu) Source: Energy Information Agency
Energy Consumption by Source, 1635-2000 (Quadrillion Btu) Source: Energy Information Agency
Energy Consumption by Source, US Source: Energy Information Agency
Energy Production by Source for 2000, U.S. Source: Energy Information Agency
Energy Consumption by End Use , US Source: Energy Information Agency
Petroleum Overview , US Source: Energy Information Agency
Transportation Energy Consumption , US Source: Energy Information Agency
Motor Vehicle Indicators , US Source: Energy Information Agency
Vehicle ownership per person, 1900-2002 Source: IPCC, AR4, Mitigation
Coal Production by Mining Method , US Source: Energy Information Agency
Coal Consumption by Sector, US Source: Energy Information Agency
Nuclear Power Plant Licenses Issued, US Source: Energy Information Agency
Renewable Energy, US Source: Energy Information Agency
Renewable Energy, 2008 , US Source: Energy Information Agency
Total Fossil Energy Resources, Global ZJ = Zeta-joule or 1021 Joule or thousands of Exajoules Source: Nakicenovic
Global energy resources Source: Energy Primer Note: Unit is “exojoule” = 10^18 joules = 10^15 Btu = 1/400 of world energy use.
Potential global renewable energy Source: Energy Primer Note: Unit is “exojoule” = 10^18 joules = 10^15 Btu = 1/400 of world energy use.
World Crude Oil Production, 1973-2008 Source: Energy Information Agency
Shares of world energy consumption Source: IPCC Energy Primer Note: Unit is “exojoule” = 10^18 joules = 10^15 Btu = 1/400 of world energy use.
Shares of world energy consumption Source: EIA
Energy intensity of production Source: IPCC Energy Primer Note: Unit is “exojoule” = 10^18 joules = 10^15 Btu = 1/400 of world energy use.
Energy goods v. energy services A key issue in measurement is the difference between energy goods or inputs and energy outputs or services. E.g., ounce of whale oil v. lumen; gallon of gasoline v. (vmt, comfort, safety, noise, …) Production function: Energy services = f(capital, labor, fuel, infrastructure,…) Basic point: There have been vast improvements in energy services per unit of primary energy over time (call it “efficiency”)
The price of fuel for lighting Roger Fouquet and Peter J.G. Pearson
The long-term price of light Roger Fouquet and Peter J.G. Pearson
The long-term price of light Roger Fouquet and Peter J.G. Pearson
The Price of Passenger Transport (per Passenger-Km-Hour), 1650-2000 Roger Fouquet and Peter J.G. Pearson
The Price of Passenger and Freight Transport (per Passenger andTonne-Kilometre-Hour), 1840-2000 Roger Fouquet and Peter J.G. Pearson
The Price of Freight Transport (per Tonne-Kilometre), 1250-2000 Roger Fouquet and Peter J.G. Pearson