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Energy: Perspective

Energy: Perspective. Homework, see: Professor Nate Lewis, Global Energy Perspective http://nsl.caltech.edu/energy.html. Where is the energy coming from?. current power consumption is ~ 13 TW. see: http://nsl.caltech.edu/energy.html. Projections. Is this path sustainable?.

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Energy: Perspective

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  1. Energy: Perspective Homework, see: Professor Nate Lewis, Global Energy Perspective http://nsl.caltech.edu/energy.html

  2. Where is the energy coming from? current power consumption is ~ 13 TW see: http://nsl.caltech.edu/energy.html

  3. Projections

  4. Is this path sustainable? Remember that all of this fossil fuel combustion is releasing CO2. How high will CO2 concentrations go? That, of course, depends on what actions we take!!!! WRE figure: for Wrigley, Richels, and Edmonds Wrigley, T.M.L., Richels, R., & Edmonds, J. (1996) Economic and environmental choices in the stabilization of atmospheric CO2 concentrations. Nature, 379, 240-243 Emissions pathways that lead to CO2 stabilization levels: What is the energy mix pathway that leads to stabilization of atmospheric CO2 at 450 ppm? WRE 450 path Higher WRE number means that we are using high intensity fossil fuel mix, and slowly transitioning to non-CO2 emitting energy pathways.

  5. CO2 concentration How much CO2 are we going to put in the atmosphere?? That is up to YOU!! Journal of Climate2003, 16, 206-223 Mauna Loa Data Temperature

  6. 1990: 12 TW 2050: 28 TW

  7. Fossil Fuel Use and CO2 stabilization

  8. Projected Carbon free power mix for various WRE figures

  9. Where is the energy going? Spiro and Stigliani, Fig. 5.12. p 119 Flow of energy through the U.S. economy in the year 2000 (Values are units of exajoules (1015 J)).

  10. Where is the energy going?: Electricity production 2/3 of energy consumed to produce electricity is lost!!! Spiro and Stigliani, Fig. 5.13. p 120 Flow of energy from electricity through the U.S. economy in the year 2000 (Values are units of exajoules (1015 J)).

  11. US Energy Flow -1999Net Primary Resource Consumption 102 Exajoules

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