driest

5 ms·

1.
by driest 4y ago
there is a very simple physical reason hydrogen for personal transport is not feasible: electrolyzer to fuel cell efficiency is much lower than charging a battery. we simply don't have enough green energy to afford wasting it on use Ca
2.
by driest 4y ago
that's all nice and true, but not at all relevant to the point of long term storage.
3.
by driest 4y ago
is that relevant? the premise of the article was "long term storage", and my comment aimed at putting that into perspective.
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by driest 4y ago
if that were the case, how do you explain this sentence? "The heat is then extracted and stored in “bricks” made of steel shot and quartzite for later use,"?. or did the source simply explain their process incorrectly?
5.
by driest 4y ago
sorry to disappoint, but this article glosses over a pretty significant constraint that prevents this from being long-term storage at all: storing the thermal energy from the compression process. storing thermal energy over long periods of
6.
by driest 5y ago
Aside from not delivering on the topic promised in the title, this article contains several inaccuracies and false claims that are unlikely to be accidental given the author is an industry professional. this looks like a cheap opinion piece
7.
by driest 5y ago
China's economics on solar might also be a lot different, but given that it doesn't publish these numbers all we have to reason about are the US and maybe Europe. Btw, ask France about cost of nuclear, I've heard their new re
8.
by driest 5y ago
yes, solar and wind energy generation is intermittent, that's no surprise to anyone. but it is much much cheaper than nuclear energy.
9.
by driest 5y ago
Not OP, but you're wrong about cost. Nuclear is more than twice as expensive as photovoltaics [1], so it's not cheap at all. And that doesn't include dealing with risks like proliferation and extremely hazardous waste for hun
10.
by driest 5y ago
Most of them work in the security industry and do: * malware analysis (how does this malware work, how can it be detected, can we somehow decrypt data affected by this ransomware, are there any leads to who wrote this malware, etc) * vulner
11.
by driest 5y ago
Usually the reason for this behaviour is that at least one of the parties is not interested in resolving any contentious points, but merely in "winning" the debate by focusing on arguments where they can exploit a weakness in the
12.
by driest 5y ago
I'm not debunking nuclear, I'm simply stating that just because you have a hammer climate change doesn't magically become a nail. Nuclear is great, but for the reasons I mentioned it is not suitable to combat climate change r
13.
by driest 5y ago
> No you don't from your arguments. One can be a fan of something without trying to blindly apply it to areas where it doesn't make sense. > nuclear reactors designs from the 70s are statistically safer than coal. And kill a
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by driest 5y ago
You do realize that batteries are not the only method of energy storage? In fact, there are lots of better ways to store excess energy from renewables over longer periods of time, but power to gas was mentioned as an example that works ever
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by driest 5y ago
I am a fan of nuclear energy for various reasons, and it's obvious that the safety and waste problems can be solved with new technology like small modular reactors with inherently safe designs. However, even I realize that nuclear ener
16.
by driest 6y ago
Great class, thanks for sharing the materials. Would you consider also making the code for the exercises available? I'm working through the slides but the exercises are hard to follow without the provided source code.