Prof. Stefan RahmstorfFeb 10, 2023
„Technologieoffenheit“ wird oft nur als Chiffre dafür benutzt, Milliarden unserer Steuergelder in Losertechnologien wie Kernfusion zu versenken, die uns nicht weiterhelfen.
Show threadProf. Stefan RahmstorfFeb 11, 2023
Zur Kernfusion.
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RT @rahmstorf
Nuclear #fusion will not only come too late to help solve the #climatecrisis. Even in the long run it will not be the unlimited energy source that some are dreaming of. The reason is basic physics, and anyone can do the back-of-envelope calculation. 🧵1/
https://twitter.com/rahmstorf/status/1605967891928596481
Prof. Stefan Rahmstorf 🌏 🦣 on Twitter

“Nuclear #fusion will not only come too late to help solve the #climatecrisis. Even in the long run it will not be the unlimited energy source that some are dreaming of. The reason is basic physics, and anyone can do the back-of-envelope calculation. 🧵1/”

Twitter
Show threadGünter🇺🇦Fella Dantrimont💎🌻Feb 11, 2023

@rahmstorf
First time ever I disagree to Rahmstorf.

This calculation implies that we increase our
energy use 10fold in 2100 or so.

By Renewables this would not work,
so why not just limit fusion energy?
But I agree, it comes too late for climate
protection we need now.

Show threadwaldiFeb 11, 2023

@Dantrimont
No, he stipulates that the change rate remains 2.3% per year. And 1.023^100 == 9.7

Why would this not work with renewable energy? We have so much energy left to use.

Show threadGünter🇺🇦Fella Dantrimont💎🌻

@waldi
No need to teach me math.

I studied math among other
things at university.

"So much energy left to use"
is obviously not the limiting
factor.

We use renewables for decades now.

How much of global primary energy
consumption have we reached
by now?

3 000 TWh wind/solar combined?

That is less than 2% of primary energy consumption (170000 TWh).

Germany already suffers saturation effects.

I am PRO renewables, but
no way to ramp that up by factor 500 til 2100.

Feb 12, 2023 at 12:12pmWeb