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Cherry Picking and AGW Advocacy

Media_Truth said:
What you say is true in today's world. However, if a large-scale move to electric cars occurs, it will bite into oil industry profit. And that concerns them.
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That is a large IF, and is predicated on the idea that the way we will carry the energy is with batteries.
The argument against that, is the electrical grid is not anywhere near prepared to handle the volume of energy
necessary to replace hydrocarbon fuels, whereas the infrastructure for hydrocarbon fuels is already in place, and paid for.
Retailing carbon neutral fuels made in existing refineries, and through existing fuel stations, would have the same
environmental effect, without the need to completely rebuild our infrastructure.
 
longview said:
That is a large IF, and is predicated on the idea that the way we will carry the energy is with batteries.
The argument against that, is the electrical grid is not anywhere near prepared to handle the volume of energy
necessary to replace hydrocarbon fuels, whereas the infrastructure for hydrocarbon fuels is already in place, and paid for.
Retailing carbon neutral fuels made in existing refineries, and through existing fuel stations, would have the same
environmental effect, without the need to completely rebuild our infrastructure.
Click to expand...

In my case, I run an electricity surplus EVERY MONTH of the year, with my renewables. My next car will probably be 100% electric. However, I do agree with your assessment, and it will happen in a very gradual way. As wind and solar use continues to rise, the grid will expand and become more efficient. And electric cars will become more and more popular.
 
Media_Truth said:
In my case, I run an electricity surplus EVERY MONTH of the year, with my renewables. My next car will probably be 100% electric. However, I do agree with your assessment, and it will happen in a very gradual way. As wind and solar use continues to rise, the grid will expand and become more efficient. And electric cars will become more and more popular.
Click to expand...
I agree that once people figure out that an all wheel drive electric is better in every way than a direct heat engine,
they will be all over it. I am just not sure how the energy will be carried.
Because of Carnot efficiency, heat engines and the latest batteries are getting close in energy density, (still like 5:1)
but a small reformer and fuel cell, means the energy could still be carried as a liquid hydrocarbon fuel.
I think recent reformers and fuel cells have efficiencies as high as 70%.
This means a 1 Kg of gasoline could contain as much as 9 Kwh of energy.
I think the best batteries out there currently can contain about .5 Kwh per Kg.
https://en.wikipedia.org/wiki/Energy_density
I suspect batteries may be able to cross the current 5:1 boundary, but will still be a long way
from being able to match the energy density of hydrocarbons.
 
longview said:
I agree that once people figure out that an all wheel drive electric is better in every way than a direct heat engine,
they will be all over it. I am just not sure how the energy will be carried.
Because of Carnot efficiency, heat engines and the latest batteries are getting close in energy density, (still like 5:1)
but a small reformer and fuel cell, means the energy could still be carried as a liquid hydrocarbon fuel.
I think recent reformers and fuel cells have efficiencies as high as 70%.
This means a 1 Kg of gasoline could contain as much as 9 Kwh of energy.
I think the best batteries out there currently can contain about .5 Kwh per Kg.
Energy density - Wikipedia
I suspect batteries may be able to cross the current 5:1 boundary, but will still be a long way
from being able to match the energy density of hydrocarbons.
Click to expand...

I don't think they will ever match the time it takes to fill up the energy supply.

That 10 minute dream is still far from a 2-3 minute fill-up, and illegal by current regulations regarding electrical safety.
 
Lord of Planar said:
I don't think they will ever match the time it takes to fill up the energy supply.

That 10 minute dream is still far from a 2-3 minute fill-up, and illegal by current regulations regarding electrical safety.
Click to expand...

But a battery exchange much like a propane tank exchange would work.
If there's some reason electric cars couldn't be designed for a quick battery
replacement I'd like to know what that is.
 
Lord of Planar said:
I don't think they will ever match the time it takes to fill up the energy supply.

That 10 minute dream is still far from a 2-3 minute fill-up, and illegal by current regulations regarding electrical safety.
Click to expand...
If the fillup is man made hydrocarbon fuel (on organic hydrocarbon fuel) it will be the same as current fillups.
the fuel is simply the method of carrying the energy.
 
Steve Case said:
But a battery exchange much like a propane tank exchange would work.
If there's some reason electric cars couldn't be designed for a quick battery
replacement I'd like to know what that is.
Click to expand...

Yes, Tesla had a battery exchange video some time back. They did two cars in under three minutes. Ir was it two?
 
[h=2]New Study: 6500 Years Ago The Western Barents Sea Was Ice-Free And 10°C Warmer Than 2015[/h]By Kenneth Richard on 25. November 2019
[h=4]The Arctic’s western Barents Sea (Storfjordrenna) surface temperatures now range between 2-4°C. Sea ice persists in the region for 10 months of the year. A new study finds this same region was sea ice-free, 10°C warmer than today (13°C), and SSTs rapidly rose and fell by degrees C per century during the mid-Holocene.[/h]The western Barents Sea surface temperatures oscillated around 3°C in 2015 according to a new study (Łacka et al., 2019).
SSTs-western-Barents-Sea-in-2015-Lacka-2019.jpg

[h=6]Image Source: Łacka et al., 2019[/h]During the Bølling-Allerød epoch 14,500 years ago, when CO2 concentrations were still in the 230 ppm range, Łacka et al., 2019 found the western Barents Sea surface temperatures to be comparable (2-4°C) to today.
From about 9000 to 3500 years ago, this same region’s temperatures rapidly (degrees Celsius per century) fluctuated between 3°C and 13°C. The latter temperature value – 10°C warmer than today – was achieved about 6500 years ago (265 ppm CO2).
Evidence also suggests this region of the Arctic was sea ice-free throughout most of the mid-Holocene. In contrast, today’s sea ice persists for all but August and September in the northern Barents Sea.
Holocene-Cooling-West-Barents-Sea-Svalbard-Lacka-2019.jpg

[h=6]Image Source: Łacka et al., 2019[/h]
 
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