You've obviously never been to Montana.
Can't say I have. But ever since I saw Hunt for Red October I was wondering what the big deal was.
Big mining, especially copper, ruined great farmlands east of Missoula, destroyed a city, Butte, destroyed a mountain and left a hazardous lake pit and about 60 square miles of hazardous slag. All achieved by Anaconda one of the charter members of that f..king association. That association is responsible for making pits of deposits all over the world with little regard for human or plant life.
What does a copper mine that closed over seven decades ago have to do with how much copper is needed for modern electric cars?
No completent person in her right mind would ever consider their 'science' valid.
No completent[sic] person would ever consider that an old copper mine has any bearing on validity of statements about copper needs of a decarbonized economy.
There are wireless methods that will soon replace the expensive wire infrastructure.
That's a good one!
While there will be some use for wireless power transmission, it will not "replace expensive wire infrastructure" nor will it decrease the demand for copper. Quite the opposite. I could see electric cars using wireless charging, but you will need copper coils on both the charger and the car to make it work.
Example:
Oak Ridge Inches Closer to 15-Minute Wireless EV Charging
And wireless charging will not replace the copper inside the electric motor (as either windings or squirrel cage), the wiring inside the battery or the high-current cables connecting the two.
Oh, this is so bad! Reads like an undergrad term paper, and a C+ one at that. How did you find this?
IV. ADVANTAGES Electricity in the air technology would completely eliminate the existing power transfer using cables, wires ,towers and the sub stations between the power stations and consumers.
Yeah, no it would not.
It is more convenient, and has more freedom to use electricity. The cost and maintenance of transmission of electricity from stations to substations become cost efficient and cost of electricity for the consumers would also be reduced
Wired power transmission is more efficient, cheaper and more flexible. Microwave power transmission would only be feasible for niche applications or proposed space-based power generation.
This technology is also helpful to transfer electricity to those places where the wired transmission of electricity is not possible.
Then just use solar panels and some battery backup.
Loss of electricity is also negligible in the wireless power transmission; therefore the efficiency of wireless power transmission is higher than the wired electricity transmission system.
That's some major bullshit right there. The losses would be much bigger.
The power failure due to the faults in transmission transformers and short circuit would never exist in the wireless power transmission.
No, it would be replaced through faults in transceiver equipment and the like.
V. DISADVANTAGES Every technology need a capital cost for practical implementation at the initial stages. So the capital cost of initial implementation of wireless power transfer is high. In Laser power transmission technique radiation losses, attenuation losses etc. are concerned factors. The other disadvantage of the microwave technique is interference of microwave with current communication technology that leads to biological impacts on the humans as well as animals.
Yupp. All that and then some.
VI. BIOLOGICAL IMPACTS There is a fear of the microwave radiation effect associated with microwave technique. But the exponential growth in this domain rapidly is proving that the microwave radiation level would never be higher than the radiation safety standards.
In that case you would need very broad beams and huge rectenna arrays.
In general, effect of microwaves on atmosphere is quite small. Microwaves are scattered and absorbed by air, and water.
These two sentences are in direct contradiction.
Microwave is absorbed by water vapor and oxygen influence the air in the frequency band 2.45 GHz and 5.80 GHz. It is only enough to consider radiation absorption by the oxygen in microwave frequency bands. The attenuation is approximately 0.007 dB/km [6]. The total absorption through air from space is 0.035 dB, only in the case of solar power from space technique [7].
The .007 dB/km value is just for oxygen. But anyway, that means 1.1 dB for a 100 mile line, or 23% of power lost just to atmospheric absorption without considering the effects of losses in generating and converting microwaves back to electricity, or losses due to beam spread. In contrast, with a
high voltage AC line you love about 7% per 1000 km (~620 miles) and you don't have to worry about accidentally microwaving a flock of birds.
It is easy to see that this is not feasible for large-scale earth-bound power transmission.
The author also mentioned losses from space (as in from a giant solar array in space beaming power to Earth via microwaves), which is indeed a possible use for the technology as you can't really run copper wire into space and atmosphere thins considerably after the first 10 km or so limiting attenuation losses. But the beam transmitting at very high power would require a huge ground based array (needing a lot of copper which is ironic as your whole point was to denounce copper) of rectennas. There is another reason for a huge rectenna array - beamforming. A huge array allows the setup to operate as "near field" even at a huge distance which improves efficiency considerably. But again, this is all very theoretical and will not reduce the demand for copper - quite the opposite. And it has no bearing on how much copper is used to make an electric car, which is what you started out disbelieving just because it comes from a copper industry group.
VII. CONCLUSION Wireless Power transmission technology offers to transmit electricity from short range to long range. It can eliminate the use of wired charging systems and batteries.
How does the author envision wireless power transmission eliminating the need for batteries?
Put that in you pipe and smoke it Derec.
Using this C+ term paper to light up a pipe is probably not the worst use for it.
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