Greenhouse gas emissions – Electric vs Gasoline cars The Energy

15 мая 2014 | Author: | Комментарии к записи Greenhouse gas emissions – Electric vs Gasoline cars The Energy отключены
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Greenhouse gas emissions – Electric vs cars.

Amidst all the scientific academic research and political the debate continues on how much converting to electric cars – from our existing electrical – will have on the emissions of gasses – CO2.

With the of these studies, some CO2 contributions all the way back to the first of breath from the dinosaurs, it can be for the average rocket scientist, let mere mortal, to come to a

Therefore, I have decided to the scientific calculator, eliminate the and do a simple, empirical analysis of direct impact.


First, the Coal burning Plants.

We are fortunate here in someone, most likely challenged, actually had the good to measure the CO2 output of power It has been measured and confirmed times since. Ends up the Coal burning power emits 2.17 pounds of CO2 for kilowatt-hour it produces. (EIA) coal makes up only 48% of our generation.

Natural Gas produces 20% and it emits CO2 (1.4 pounds per But, 30% comes from and renewable sources. So, taken our national electrical supply on the high side, 1.51 of CO2 per kWh.

Now for the Cars.

Basic tells us that burning 1 of gasoline emits 19.4 of CO2. It also tells us, on BTU content, there are 36 kWh of energy in gallon of gas.

One place where all the research bogged down is trying to for the varying efficiencies of our automotive Automotive IC (Internal Combustion) are anywhere from 15 to 28% efficient in driving. Well, for our worst empirical study, I am going to the most efficient – 28%.

The efficient means it is the most we get for every globule of CO2 emitted. the meaning is that 28% of the BTUs in gallon of gas will get turned useful, mechanical work. All the are wasted as heat. There are BTU’s, give or take, in a of gas, so at 28% efficiency 34,720 of or 10.16 kWh, are actually for something productive. Yet, we created 19.4 pounds of CO2 that gasoline.

A little math, and the emissions for our car is 1.90 pounds of CO2 per kWh of work Note that at the other end of the – at 15% efficiency — those would be 5.4 kWh of useful work, and pounds of CO2 per kWh.

Although article is not about CO2 per mile simple), for the sake of reference, the Chevy Volt, and my Chevy use approximately .240 kWh for each at a steady 60 Miles Per Hour. The Roadster claims to use .217. The is about .220.

Interesting » Electric Cars

Your dumptruck, I don’t However, we do not need to factor in the mileage of different vehicles to the absolute CO2 emissions potential. a similar gasoline vehicle, a similar electric vehicle still result in similar needs.

The answer please!

The show that burning in an ICE powered car creates anywhere 21% to 58% more CO2 than getting the amount of energy from our grid for the same size and car. And, that is important.

The other way many of studies tend to confuse the is trying to relate everything to – like pounds per mile. is truly putting oranges in an barrel. The matter of mileage is when comparing similar and shape vehicles where the difference is the source of power. will both use the same of energy, which here is in Kilowatt-hours. Regardless of whether are powered by electricity, gasoline, or pop.

The difference lies in the source of the

Now granted, if you replace your truck with a compact you will be emitting less but that is true of either source, because your car uses less energy a dump truck. The reverse also be true, although luck finding an electrically dump truck.

It should be by now that by replacing a gasoline ICE vehicle with an electric for the same amount of power at the we would reduce CO2 GHG emissions by from 21% to 58% — even our existing electrical supply. in fact, those who have to reduce some of the complex, politically motivated and artistically studies down to their conclusions have found the same thing.

Interesting » Electric Cars
Interesting » Electric Cars
Interesting » Electric Cars
Interesting » Electric Cars

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