[-] Telemachus93@slrpnk.net 5 points 1 week ago

It's definitely easier to electrify maritime transport.

Long-range aviation might not be electrified at all because it's so hard to get enough energy from batteries without making the plane unable to lift off due to weight, or enough power from fuel cells without taking too much space. Instead we might see hydrogen turbines or synthetic fuel engines.

Either way, maybe we should ask ourselves if a future society should have flight at all? Of course it's cool that humans were able to achieve flight but right now it mostly serves an overheated capitalism and the short-lived pleasure-seeking of (globally speaking) a few fortunate people.

[-] Telemachus93@slrpnk.net 10 points 1 week ago

I disagree with the "the technology is already there" statement. Source: I was part of an aviation electrification research project.

Small regional planes are technologically possible, yes, but transatlantic or transpacific flights? We're nowhere close to that.

[-] Telemachus93@slrpnk.net 20 points 2 weeks ago

We're talking about engineers here! We're using MATLAB or Python if we're programming at all.

[-] Telemachus93@slrpnk.net 16 points 3 weeks ago* (last edited 3 weeks ago)

Geht um den Opa des Oberfaschos in den VSA: https://de.m.wikipedia.org/wiki/Frederick_Trump

Edith: vergessen, dass ich auf ich_iel bin.

[-] Telemachus93@slrpnk.net 5 points 2 years ago

Ich verstehe das Meme eher als Veranschaulichung radikal linker Theorien (da sind sich Marxisten und Anarchisten weitgehend einig) über die Funktionsweise bürgerlicher Demokratien.

Denen zufolge kannst du noch so idealistisch in die Politik gehen, die Umstände (Kombination aus Druck durch andere Parlamentarier:innen, Lobbyisten, angebliche Sachzwänge, ...) bringen dich dazu, im Interesse des Kapitalismus zu handeln. Währenddessen fahren Konzerne die Welt weiter an den Abgrund heran und die Politiker:innen weisen sich gegenseitig die Schuld zu, obwohl man Vieles am Ende auf das Wirtschaftssystem zurückverfolgen kann. Aber die Medien reden über das Politikspektakel, nicht über den Kapitalismus.

Es braucht also nicht mal Spenden oder Bestechungen, damit Politiker:innen letztendlich zu Dienern der Konzerne werden. Das gilt damit auch für Die Linke, wenn sie mal in einer Koalitionsregierung mitregiert, selbst wenn sie keine Spenden annimmt.

[-] Telemachus93@slrpnk.net 8 points 2 years ago

The thing is, and I say this living a very comfortable life in Germany: this model makes life good for (many, not all) people HERE, but it still depends on people being exploited elsewhere. Call it imperialism, dependency theory or world system theory, they all say similar things. World-wide social democracy is impossible.

[-] Telemachus93@slrpnk.net 4 points 2 years ago

There's so much years old anti storage propaganda in your text, it's painful.

Hydrogen storage is not a mature technology yet

What makes a tech mature to you? We have all the components of a hydrogen storage path up and running everywhere around the world. They're not profitable, at least not without government incentives, but solarpunk is anti-capitalist, so profitability shouldn't be among our primary concerns.

something like 35% round-trip efficiency

That's a worst case figure for purely electrical round trip efficiency. We could use waste heat of the fuel cell process (to a lesser extent also the electrolysis process) in order to bump that number up considerably.

not to mention the issues with hydrogen gas leaking due to its small molecular size

That has not been an issue for quite some time thanks to advances in materials science. Also, we could use methanation, of course sacrificing some more efficiency, but then we could even use old natural gas infrastructure without an issue.

Shouldn't even start discussing lithium ion, but the danger of thermal runaway should alone be enough of a reason to plan it very carefully.

Lithium-ion batteries are environmentally bad for sure, but talking about thermal runaway? Really? You need very high temperatures for that to happen. Most stationary storage applications will never see such high powers that they come even close to thermal runaway by themselves. If in a high power application, you'll have better battery management systems supervising the temperature and reducing the allowed power. It's really a non-issue if you have engineers who know what they're doing working on it.

Coming bad to environmentally bad: see sodium-ion batteries.

[-] Telemachus93@slrpnk.net 6 points 2 years ago

Sustainable practises, especially energy generation are way cheaper than non renewable sources, so why would corporations try to make energy cost more for themselves?

Sadly, that's not the whole story. I don't share all of his takes on how to move forward (he's a tankie, I lean towards anarchism), but Second Thought summarized very well what the weak point in your argument about cost is: https://youtu.be/3gSzzuY1Yw0

this time the main blame is on the government for not putting the environment first and not forcing adverts for unsustainable products to have warnings about their environmental impact. But the government is installed by people (in democracies) and the people clearly don’t care.

Sadly, you're also wrong here. For the USA it has been shown that the opinion of average citizens on proposals of individual policies has no significant impact on the probability of the policies being implemented. It is only the position of lobbyists that have an impact. Lobbyists also include environmentalist groups, of course, but more often than not corporate lobbyists all take similar stances whereas non-corporate groups are very often single-issue groups who only make themselves heard on relatively few occasions, making them less impactful overall. https://scholar.princeton.edu/sites/default/files/mgilens/files/gilens_and_page_2014_-testing_theories_of_american_politics.doc.pdf

I don't know of a similar study for EU countries. My guess is that the multi-party systems here work in favor of more voices being heard but also against implementation of new actually useful policies because of the need for compromise and coalitions.

[-] Telemachus93@slrpnk.net 6 points 2 years ago

Er hat bourgeois richtig geschrieben! Marxismus Stufe 1000 erreicht!

[-] Telemachus93@slrpnk.net 7 points 2 years ago

Jetzt habe ich einen Ohrwurm.

[-] Telemachus93@slrpnk.net 4 points 2 years ago

Really gives me extra hope that this isn't another vaporware battery technology.

I'll take it with a grain of salt:

  • From the summary I didn't see if the energy density is a cell level value or a system level value. We have to compare system level energy densities.
  • Also energy density isn't the only thing lithium ion batteries are good at. Firstly, if the cell at its core is a reversible fuel cell with nafion membrane, the dynamics of the cell will be comparable to PEM fuel cells. Lithium-ion batteries can deliver full power instantly without an issue. With PEM fuel cells you have to be more careful: it's possible to flood the membrane with water or dry it up if you change power too quickly, which is why their response time (time from set point change to actual delivery of full power) is usually limited to about one minute. Secondly, how good or bad is the calendric and cyclic aging and recyclability of the new battery? Lithium-ion has come a long way concerning lifetime - recyclability not yet, sadly.
  • With Sodium-ion batteries there's another, more mature and similarly environmentally-friendly technology already on the market. And while I wouldn't have thought that it made sense, chinese manufacturer CATL already has built Sodium-ion batteries for cars, and (sadly) that's the far more important market for batteries compared to stationary ones.
[-] Telemachus93@slrpnk.net 24 points 2 years ago
  • Das Fallpauschalensystem wurde in Deutschland flächendeckend 2004 eingeführt.
  • Karl Lauterbach ist 2005 erstmals in den Bundestag eingezogen.
  • Er ist sein Amt mit dem Versprechen angetreten, das System abzuschaffen, weil es Scheiße ist.

Aber er ist Schuld. Is klar.

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Telemachus93

joined 2 years ago