Posted on 11/25/2015 5:07:47 AM PST by thackney
ahmmm..... you are correct.
There are however specifics that seem to be overlooked. For urban travel with short commutes of say 25 miles, the electric Fiat or Yugo might have a place.
For intercity or interstate driving, Gas or turbo diesel engines will not likely be replaced.
The USA markets will sort it out if the green wackos can be kept out of the political majority
Yes, nat gas is gaining, but it still produces CO2, which causes Islamic terrorism (as per 0bama).
End use of electricity is horribly inefficient, and the ability to store large amounts of energy are all but non-existent. We have been “just a few years away form a major battery breakthrough” for at least 50 years. They just need more funding for research to bring it to market, translated : Give us your money.
I expect to see a market for small trailer mounted generators for electric cars on longer occasional trips.
Electric car "recharge" time = 6 hours.
'nuff said.
So does the hydrogen fuel cell. The difference is it is produced at the hydrogen processing plant rather than the vehicle. And due to the inefficiencies in creating H2 from some other fuel, more CO2 is produced than just using the methane directly.
End use of electricity is horribly inefficient
I don't agree there. We get ~100% efficiency for heat generation and often 90% (and better) efficiency for motors. The efficiency problem with electrical devices is the creation of the electricity and the storage.
It seems that hybrids are the way to go.
They have their place. Overnight recharge at home for a commuter car works. But they are not going to pull our horse trailer for a rodeo +100 miles away.
Electric cars would in temperate climates where heating and A/C issues do not dominate the “driving experience”.
Hybrids make more sense to me for most applications than pure electric.
But most still fail to be total economy of the same size vehicle in gasoline. Not just mpg but purchase to resale total cost.
Agreed, those greatly impact the cost of range.
“I don’t agree there. We get ~100% efficiency for heat generation and often 90% (and better) efficiency for motors. The efficiency problem with electrical devices is the creation of the electricity and the storage. “
When I say “end use” that includes everything from power generation to the ultimate magnetic field generated to provide the motive torque.
No such thing of anything approaching 100% in anything having to do with energy, There are losses everywhere, especially in electric cars. Proponents think if they just ignore these losses and don’t report them (like the global warming hucksters) they don’t exist.
This report is an fantasy opinion piece, not a scientific presentation. It is pure speculation, and just the kind of tripe used by politicians to justify idiotic legislation designed to “save the world”.
Remember the old Pollock joke: the Poles have announced a manned mission to the sun. When it was suggested the space capsule would burn up as it approached the sun, the spokesman said - simple, we’ll go at night.
This guy probably thought that was a good plan.
Somebody is going to have to make a bunch more wall outlets for this electric car prediction to work (that is where electricity comes from, right?)
Yes that's true but there are other factors.
It's like spending a ton of money on a vegetable garden when buying vegies is cheaper. I have a acquaintance who spend some $30,000 for a 20 year old Vestas 65KW wind turbine. It never paid for itself but he just liked the thing. My Harley will never be as practical or economical as Hybrid car but when I even hint at getting rid of it my wife says "That's enough of that p*ssy talk!". I love that woman.
Sorry to pick at the nits, but that isn't end use, that is the whole system.
No such thing of anything approaching 100% in anything having to do with energy,
Electric heat comes close, since the losses are nearly 100% of the desired product, heat. But that is only for the end device, not the whole system.
“An electric car is no different than a spring or rubberband powered car, the power must be produced somewhere else, then stored in the car for later use.”
This level of scientific thought is far beyond the liberal mind to comprehend.
...if I only had a long enough extension cord.
The only reason the electric vehicle industry is somewhat viable is because of government subsidies. If electric cars had to compete in the marketplace, the industry would cease to exist.
This graphic looks like a dog’s head.
I wonder how he came up with and what 85-90% efficiency he is speaking of.
If you look at the entire process to power the electric car, this is impossible. You have 3 major energy transformations in this system and multiple systems.
In order to get the total efficiency, you have to multiply the efficiencies together.
I don’t know what they numbers stand out today, but lets just say for an example (made up numbers off the top of my head):
1. NatGas Electric Generators: 60%
2. Transmission Lines: 89%
3. Transformers to step down to the charging stations: 94%
4. Efficiency of charging the batteries: 75%
5. Battery Discharge and Power Supply: 94%
6. Conversion of Energy to Motive force and Braking Recovery (Motor): 93%
So: .60*.89*.94*.75*.94*.93 = 33%
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