strainer

14 ms·

91.
by strainer 7y ago
In the first quote yes, but who is really doing that talking and double counting? I suspect some strawpersons. In the second quote the op is clearly complaining that schemes growing trees and burning them for fuel cant be carbon neutral, wh
92.
by strainer 7y ago
>If we export more green energy than we import coal energy then we can pretend that that the coal did not actually get released into the air as pollution. That exchange is plainly not carbon neutral. Exporting green energy does usually c
93.
by strainer 7y ago
The claims that nuclear has been "misregulated into a pulp" and that new designs can be economically developed which are much better than 20 and 30 year old designs, are also evidence free opinions.
94.
by strainer 7y ago
> That’s a cudgel to ignore the fact that being anti-nuclear means being pro-fossil fuels. I dont think so. We may have a common competitor yet also be in competition. Solar and wind have very complimentary output patterns (combining two
95.
by strainer 7y ago
Heh, well maybe - adopt an Elon Musk development strategy : "Failure is an option here. If things are not failing, you are not innovating enough." it more than works for his projects, but if you're competing for policy suppor
96.
by strainer 7y ago
> > and larger blades raise cut in speeds > That is not necessarily true, it depends on the allowed degree of pitch ... I think you are correcting a different matter here. Blade diameter in practice dominates the amount of power a
97.
by strainer 7y ago
I don't believe its a term in general use in the industry (of large wind turbines). Since "survivable" means "might survive" - that's not a very useful engineering target. Wind turbines have to be rated to reli
98.
by strainer 7y ago
> Spacing of machines is a pretty tricky balance and if the wind patterns start changing in unpredictable ways that will be a very hard thing to design for. It sounds like you do have confident experience of modern wind farm specificatio
99.
by strainer 7y ago
> but society needs wind to be significantly overprovisioned to avoid burning carbon. Should be "...overprovisioned in order to completely avoid burning any carbon relying on wind power alone " > Storage is really hard. W
100.
by strainer 7y ago
Studies are finding waste heat from thermo-electric plants may not be insignificant. In this study [1] "energy consumption" is a shorthand for all human heat emissions from combustion engines, industrial processes and thermo-elect
101.
by strainer 7y ago
This school equates simulation with being, so that if consciousness is simulate-able then it exists as consciousness. The interpretation of simulations is as far as we can tell in the mind of a beholder, but simulation hypothesis has come
102.
by strainer 7y ago
Ah so effectively none of the Hev photons reach the ground. I see the papers include the "Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes" data. I wouldn't have expected imaging to be practical because cherenkov
103.
by strainer 7y ago
Its not really wrong. The atmosphere absorbed most of it but some made it through because there was so much of it. The atmosphere happens to absorb most of the high energy wavelengths involved, it also absorbs many low energy wavelengths. T
104.
by strainer 7y ago
Some captured CO2 might be used with cheap electricity to make carbon neutral fuel - which is of course a form of stored energy itself. A pilot project in Germany is doing this[1]: > The green hydrogen will be combined with carbon dioxid
105.
by strainer 7y ago
Relevant light scattering occurs in the atmosphere between the satellite and the telescope. It also occurs between every other light source, across the universe, and the telescope. Thats why the satellites contribution to light scattering i
106.
by strainer 7y ago
Im broadly aware of a range of techniques which can be involved in adaptive optics. The quality of debate seems very low to me and not worth laboring words on when people are imagining low power satellite trails represent a big challenge to
107.
by strainer 7y ago
I have not seen any information that light from these satellites could scatter and brighten the night sky a significant amount. This article just shows their paths are visible on a sensitive image, but the paths themselves amount to tiny fr
108.
by strainer 7y ago
Adaptive optics should be able to adapt to any number of satellites traveling, quite predictably and diminutively through their frame of capture.
109.
by strainer 7y ago
Sounds promising but I personally need more info or at least certification on new products safety characteristics. I wont go into an alarmist list, but some materials "based on silicone" are problematic and some are flat out hazar
110.
by strainer 7y ago
The only well studied and clinically developed diet for people with serious irritable bowel diseases, known as FODMAP[1] focuses exclusively on minimizing specific types of sugar and carbohydrates. For a severely compromised digestive syste
111.
by strainer 7y ago
> solar panels don't last "a few years more" [than turbines] This is not a point against solar, but the "lifetime" of wind turbine installations is misrepresented in the article. It states "the life expectan
112.
by strainer 7y ago
If nuclear plants really do generate at about 2 cents per kWh, how come the most established and respected power industry pricing analysis finds that it costs over six times that - between 12 cents and 19 cents per kWh ?[1] Where does the 2
113.
by strainer 7y ago
Totally solvable. We should have cracked down on leaks already, and have satellites coming on line to do so.
114.
by strainer 7y ago
Here is a 30MW project in Germany, aiming for 700MW in 2030 to make hydrogen > methane > kerosene from renewable surplus electric and captured CO2 [1] This articles language is almost absurd. As though economic power-to-fuel technolog
115.
by strainer 7y ago
Thanks. Tantalizingly, some plain efficiency measurements seem to be contained in articles supplementary material. > "Online O2 detection also confirmed quantitative OER Faradaic efficiency with and without the presence of a magneti
116.
by strainer 7y ago
I think an efficiency improvement is also perhaps implied. They say a strong magnetic field doubles the current flow with no change in input voltage. Basically with V=IR and Power = I* I* R ,if the current has increased without change in vo
117.
by strainer 7y ago
Thanks for the info on the paper - I haven't read it, just seen a number of reports of different approaches to space shielding, that seem to establish its a physical/industrialy modest possibility (for a global project). It would
118.
by strainer 7y ago
Good point about solar just transferring the energy. Im not sure how practical it is to brighten so many constructed surfaces like pavements and roads it makes a big impact and is tolerable to live with. An estimate that only 2.7% of the wo
119.
by strainer 7y ago
When solar arrays are located over water they do alot of cooling because without them water reflects very little. Deserts already reflect a great deal of sunlight. Temperate land absorbs a great deal but it is in great demand for agricultur
120.
by strainer 7y ago
The physics work out very differently because a lot of different wavelengths, some invisible are absorbed by the atmosphere (co2 and other absorbers) before and after reflecting off the ground. Sunshade designs have been considered viable b

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