danhor

11 ms·

91.
by danhor 3y ago
At least historically that hasn't been the case nearly as much as for PV panels. I unfortunately haven't been able to find great timelines for electrolyzer costs apart from https://www.researchgate.net/figure/
92.
by danhor 3y ago
No, I'm assuming rooftop solar users just use their solar themselves, thus significantly reducing the demand the grid sees. Since there is (and will be) no way to penalize using rooftop power yourself, demand might still be below the g
93.
by danhor 3y ago
Right now this is the case, but if roof-top solar is used more widely, it can happen even without subsidies. For owners of roof-top solar it should never be beneficial to turn run from the grid if not necessary, so coal and nuclear power pl
94.
by danhor 3y ago
The issue with this line of thinking is that electrolyzers are very expensive. I've read papers that estimated that using free electricity would only be cheaper than running 100% on the time for normal electricity prices of 8-9 ct&#
95.
by danhor 3y ago
While hydrogen EMUs were first used in germany in planned service (with battery EMUs coming into service later this year), it seems that BEMUs might be more mature right now. The only HEMU being used right now is the iLint, and it has been
96.
by danhor 3y ago
Overhead wires take quite a while to plan and build and for non-frequent service (1tph) and/or short trains installation costs and maintenance are quite high compared to buying e.g. BEMUs. Many of these services are shuttle runs with e
97.
by danhor 3y ago
> At all computer sizes, a GPU probably will have more multiply circuits than an equivalent cost FPGA Very likely yes, but FPGAs often have hundreds to thousands of hardware multipliers, as part of the DSP blocks. Here for example newer
98.
Why investing in new nuclear plants is bad for the climate(cell.com)
2 points by danhor 3y ago|2 comments
99.
by danhor 3y ago
My package manager certainly doesn't sync settings and save files between multiple systems. But I'd be interested in one that does!
100.
by danhor 3y ago
Wasn't the issue with Texas that renewables were behaving as expected (unfortunately not producing a lot of electricity), but fossil fuel power sources were failing unexpectedly due to the freezes? Thus the issue not being renwables. I
101.
by danhor 3y ago
(Somewhat) confusing UI, delayed key exchange ("the sender hasn't sent the key to this device so the message can't be displayed yet" or something similar) and just in general a much less polished experience.
102.
by danhor 3y ago
> But an expansion of nuclear could have happened Very unlikely. Nuclear (in the West) hasn't been expanded in the last 30 years, partially due to overblown safety concerns but also due to cost issues. There has been no hugely succe
103.
by danhor 3y ago
The renewable push in germany came because the greens (and other parties) wanted to shut down nuclear and replace it. If the exit from nuclear was never started, germany would have been much less willing to invest in renewables. German inve
104.
by danhor 3y ago
Dine in food vs. take out food also has different tax rates in Germany of 19% vs. 7%, but vendors offering both will offer the same price after taxes (and ask you so they can do their taxes). Different products in supermarkets also have dif
105.
by danhor 3y ago
The choose some other manufacturer. E.g. Aisler will do assembly for 10 Boards for around 200€ in Germany, more than JLCPCB (this is probably in part due to the scale and automation with which JLCPCB operates), but much less than 1k.
106.
by danhor 3y ago
Bad example, JLCPCB will do PCBA for just a few dollars.
107.
by danhor 3y ago
I've seen quite a few intersections (Germany) that only feature one car road, but a crossing pedestrian/bike street that after pressing the beg button immediately begin to switch the light, resulting in a consistent, short wait (a
108.
by danhor 3y ago
I'm guessing the original commenter was confused between heating with gas and cooking. Using electricity for cooking is much more efficient when using induction heating (which is the only kind of electric cooking anyone should use). Co
109.
by danhor 3y ago
But most things have to be electric to be able to be clean. If we want lower emissions, most stuff needs to be electrified and supplied with cleaner electricity. The latter is increasing all around the world, the former is the more worrry
110.
by danhor 3y ago
It really depends, but in germany (has a large OSM community) OSM has so much better quality & detail for almost everything except buisnesses. It suffers from poor search, routing that doesn't take traffic jams or roadworks into ac
111.
by danhor 3y ago
In addition to the other points, "regular users" unfortunately still quite often use only a few passwords, shared between all their services. So only 3-4 passwords (and variations) to remember!
112.
by danhor 3y ago
At least according to some, this isn't the (only) cause: https://pedestrianobservations.files.wordpress.com/2023/04/t... People get paid similar to other countries, but the whole structure is much less produc
113.
by danhor 3y ago
While the US is investing less in transit than other countries, the projects themselves are silly expensive compared to other countries. For how little transit is used in the US, it's amazing how much (relative) funding there is. To ge
114.
by danhor 3y ago
Where? As far as I know, all the Deutsche Bahn Tickets for regional traffic use the Deutschlandtarif, which is accepted in all "normal" (excluding heritage trains and the likes) regional trains in all of Germany.
115.
by danhor 4y ago
Both are great, since while the daily cycle is a problem with solar, the seasonal variations are a far larger issue (since much mobe energy storage is needed). But both complement each other. Wind is stronger in the winter and solar is stro
116.
by danhor 4y ago
Unfortunately the equipment isn't cheap (though getting cheaper), so it only makes sense if it can run a significant portion (I've heard 25% in the coming decade for germany) of the time.
117.
by danhor 4y ago
> free or negative power cost at peak supply times, The electricity price already turns negative in quite a few countries with larger shares of renewables at peak times, but isn't really being exploited right now due to the high c
118.
by danhor 4y ago
> if I wanted to block tracking I could Are you sure? It starts from simple supercookie-like stuff and ends at TrustPID where the network provider aids in tracking.
119.
by danhor 4y ago
Decathlon does this (at least in the stores near me). You put the items into a bin at the self-checkout and everything is recognized. My guess is that that the time savings aren't large enough to offset the cost for stores with lower-c
120.
by danhor 4y ago
It's pretty setteled that people tend to drive slower on eg. narrow/twisty roads or with more stuff near the road (e.g. trees in an alleyway), even after acclimating to them.

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