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There is also a hidden cost from the tracks.
A rail track of 3m for 100km used for solar cells would generate enough electricity to transport 37500 passengers per plane.
Solar cells generate 2kWp per 10 square meters, which are 2MWh per year which is 5kWh per day.
300ksqm generate 150MWh per day.
4l kerosine per pessenger per 100km are about 40kWh.
150MWh are enough for 37500 passengers.
It's not renewable but influences the economics.
2 kWp means 2 kilo watt peak. It's the maximum they can produce and in no way the average.
You are right, I considered that.
The average per year is calculated from that number by roughly multiplying with 10 in Europe. I have looked that up and not multiplied by hours in a year.
is that for angled or horizontal?
I don't know. I just picked the first number I got.
right, so that's most likely optimal placement, with peak efficiency being reached for a little while each day as long as the weather is good. if they lie flat, you can lose as much as 90% of that energy, and that's still with proper maintenance. flat panels also don't self-clean, so maintenance would be even higher.
basically, you can probably skip the multiplication altogether.
It's not the most optimal. It's for a 20% panel slightly south of England:
https://en.m.wikipedia.org/wiki/Solar-cell_efficiency
okay, so revise the numbers.
I have calculated conservatively. The result is the lower bound. With optimal conditions twice the energy could be generated.
it's not though, because we've already shown that it was overstated by a factor of 10.
No, you thought that I had inflated numbers and thus reduced the factor but that reduction is not necessary. There is even another underestimation because the land for the tracks is wider than three meters.
i gotta ask, is this a devils advocate thing? because your responses are all so incredibly off that i can't realistically believe that you believe what you are saying.
There is nothing to believe. Trains only make sense with more than 37k daily passengers. You have the Wikipedia pages for the numbers and you can do the multiplications for yourself.
I have just stopped caring about downvotes. This is not the first time the hive mind is off but I rarely see facts being ignored this strongly.
I prefer trains because planes are loud. But that's not relevant for the economics. If people want trains they should push for trains where they make sense, and not everywhere.
Trains make sense for high volumes of passengers. A highspeed train has to pay about $8 per km. So for a 100km trainride with 800 passengers, one passenger has to pay $1 whereas the plane burns kerosine for $2,40.
it's because your arguments are not sourced properly and your comparisons don't apply
Whereas everybody else sources their arguments. Which number of mine is not sourced by now?
However I didn't expect that I had to source basic solar cell numbers in a post that is vaguely about renewable energies.
Why do the comparisons not apply?