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I drive on average 8k kilometers per year. I doubt that this is amounting to all the rest, is it ? a quick computation gives me, given that my car drinks rough
by jcelerier 6y ago
I drive on average 8k kilometers per year. I doubt that this is amounting to all the rest, is it ?
a quick computation gives me, given that my car drinks roughly 7 liters of diesel / 100km if i'm not careful:
- 560 liters of diesel / year
- a liter of diesel is apparently ~10.74 kwh -> 6014 kwh total
- 6014 / 365 -> 16 kwh a day ? I don't see how this is making me any closer to 4000 kwh per day.
- jeffbee 6y agoBy your metric ways I see you might not be an American. However, you can readily divide the total motor fuel consumption in the US by the population in the US, and use your figure of energy per liter (which is a bit higher than pertrol, but it doesn't matter). The point is that the global emissions story boils down to transport fuels, meat, leaky houses, and a long tail of irrelevant things, such as your choice of programming language at small scale. At large scale the economic incentives alone are enough to encourage huge energy consumers to use a decent language (for example, Google and C++). But the whole information industry taken together is irrelevant to the global emissions story as long as we have an airline industry, cars, and hamburgers.
- liuhenry 6y agoUS Department of Transporation says the avg. American drives 13.5k miles per year. Using an average mpg of 21.5 mpg (if the average age of a car is 12 years), this comes to ~628 gallons of gas per year. EPA uses 33.7 kWh per gallon for ~21,160 kWh in a year. Divide by 360 * 24 and you get 2.5 kW continuous, so it seems plausible. EU numbers based on [1] come out to ~1 kW for driving? [1] https://www.odyssee-mure.eu/publications/efficiency-by-sector/transport/cars-energy-consumption-per-km.html https://www.odyssee-mure.eu/publications/efficiency-by-secto...
- jcelerier 6y ago> 21.5 mpg this is more than 11L/100 - I don't know anyone who has a car that consumes that much.
- yodelshady 6y agoThe Ford F-150 is the highest-selling vehicle in North America. Also worth noting - the US gallon is smaller than the UK one. And anecdotally, the mileage rating in the US actually tends to represent real-world consumption, whereas the EU test - until very recently - did not.
- liuhenry 6y agoFair - I don't own a car myself, but the US DOT reports 24.4 mpg in 2018 for cars, SUVs, vans, and light trucks shorter than 121 inches. (This is an estimate of vehicles on the road, not 2018 model year.) If we use a 2020 model year for passenger cars of ~40mpg and a more conservative 11,500 miles per year, it comes out to 1.1kW.
- jeffbee 6y ago> light trucks shorter than 121 inches. This definition excludes the best-selling vehicle.
- layoric 6y agoI don’t know if the 4kW statistic is right but 16kWh per day is 0.667kW continuous (16kW / 24 hours).They specifically say not including electricity use but could see that continuous number climbing closer to the 4kW number if it did. People who regularly fly would also likely quickly make this number rise.
- reitzensteinm 6y ago4 kW continuous is 48 kWh per day. 4 kW * 24 h.
- jcelerier 6y agoMy bad, that's much closer.
- reitzensteinm 6y agoUmm... I messed up the math. It's 96 kWh. There's enough embarrassment to go around it seems!