ZachF
Active Member
Also, for those of you studying energy flow, I've found this website immensely useful:
IEA Sankey Diagram
IEA Sankey Diagram
Almost all the oil that is consumed now goes to road transportation. The second largest source of demand is as a non-energy feedstock for materials.
Final consumption figure for oil is 31,040 petajoules, that doesn't include the 316 petajoules that went to the electricity sector, 1,443 petajoules of oil industry self-use, and approximately 698 petajoules of refinery losses.
Of that 31,040 petajoules, 23,648 goes to the transport sector (20,512 to the road, 2,315 to the Air, 483 on rail, and 338 by water)
4,805 petajoules worth goes to non-energy industry (i.e. materials feedstock)
592 petajoules goes to the residential sector and 557 pj to the commercial (basically all heating where cheaper NG infrastructure is unavailable). 592 petajoules also goes to the agricultural sector.
846 petajoules goes to various industrial uses.
Oil used to be used more widely for more things, but it has generally become too expensive to be much more than transportation fuel and material feedstock. Studying these flow charts shows that 80% of the solution to decarbonizing our economy is decarbonizing electricity production, and switching transportation to electricity.
You can also see how massively inefficient the little ICE engines are. A gallon of gas has 38 kilowatt hours of thermal energy, that means a car that gets 28 mpg (basically an ICE car comparable to a M3) is using 1.36kwh of thermal power per mile. The Model 3 uses about 0.25kwh of electricity per mile, basically more than 5x the energy. Per the final consumption chart, the US uses 20,512 petajoules of oil, so replacing this with electricity would need around ~4,000 petajoules of electricity. Ironically enough, if you were to use oil-powered combined cycle gas turbines (>50% thermodynamic efficiency) to power the EVs, you would cut our road transportation oil consumption by half!
IEA Sankey Diagram
IEA Sankey Diagram
Almost all the oil that is consumed now goes to road transportation. The second largest source of demand is as a non-energy feedstock for materials.
Final consumption figure for oil is 31,040 petajoules, that doesn't include the 316 petajoules that went to the electricity sector, 1,443 petajoules of oil industry self-use, and approximately 698 petajoules of refinery losses.
Of that 31,040 petajoules, 23,648 goes to the transport sector (20,512 to the road, 2,315 to the Air, 483 on rail, and 338 by water)
4,805 petajoules worth goes to non-energy industry (i.e. materials feedstock)
592 petajoules goes to the residential sector and 557 pj to the commercial (basically all heating where cheaper NG infrastructure is unavailable). 592 petajoules also goes to the agricultural sector.
846 petajoules goes to various industrial uses.
Oil used to be used more widely for more things, but it has generally become too expensive to be much more than transportation fuel and material feedstock. Studying these flow charts shows that 80% of the solution to decarbonizing our economy is decarbonizing electricity production, and switching transportation to electricity.
You can also see how massively inefficient the little ICE engines are. A gallon of gas has 38 kilowatt hours of thermal energy, that means a car that gets 28 mpg (basically an ICE car comparable to a M3) is using 1.36kwh of thermal power per mile. The Model 3 uses about 0.25kwh of electricity per mile, basically more than 5x the energy. Per the final consumption chart, the US uses 20,512 petajoules of oil, so replacing this with electricity would need around ~4,000 petajoules of electricity. Ironically enough, if you were to use oil-powered combined cycle gas turbines (>50% thermodynamic efficiency) to power the EVs, you would cut our road transportation oil consumption by half!
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