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The Great German Energy Experiment

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161–170 of 209 posts

Re: The Great German Energy Experiment

#161
post #150

Earlier quoted context omitted.

> Fly ash is much worse, since it's also radioactive My apologies, I was indeed talking about radioactive waste in general being hard to top in terms of pollution. It goes without saying that I'm not terribly happy with how this country is getting into coal lately. So yes, fly ash is definitely a concern as well. I just happen to think waste from nuclear fuel is easier to "not produce" right now. > A pollution source…

U.S. citizen here. The storage site is on hold (not scrapped) only because of fear-mongering folks like yourself. There is no technological reason to fear the rail shipment of nuclear waste. It is not difficult to engineer enclosures that will withstand the most energetic possible train wreck. And obviously they are well shielded for radiation.

> There is no technological reason to fear the rail shipment of nuclear waste. It is not difficult to engineer enclosures that will withstand the most energetic possible train wreck.

Actually, it is difficult and there is considerable dissent over whether the currently used technology is safe enough or as safe as advertised. [1][2]

> And obviously they are well shielded for radiation.

They are shielded, but how well is another that is up for debate. I'm kind of hardlining it saying that any radiation is a problem - the containers are certainly not 100% shielded. Not finding any amount of radiation acceptable is where I seem to be losing most of the people who understand themselves to be pragmatic supporters of nuclear energy in this discussion.

[1] http://en.wikipedia.org/wiki/Dry_cask_storage [2] http://de.wikipedia.org/wiki/Castor_(Kerntechnik)#Kritik_an_...

Re: The Great German Energy Experiment

#162
post #150
post #145

Earlier quoted context omitted.

> There is hardly anything as destructively polluting as nuclear waste. Oh really? Fly ash is much worse, since it's also radioactive, and there is a LOT more of it. The pollution sent up smoke stacks is also much worse since it's actively spread to people, and there is a lot of it. In contrast nuclear waste is very small, and stays far away from anyone. > they drive it around on rails every couple of years. A pollut…

> Fly ash is much worse, since it's also radioactive My apologies, I was indeed talking about radioactive waste in general being hard to top in terms of pollution. It goes without saying that I'm not terribly happy with how this country is getting into coal lately. So yes, fly ash is definitely a concern as well. I just happen to think waste from nuclear fuel is easier to "not produce" right now. > A pollution source…

> radioactive waste in general being hard to top in terms of pollution

What? It's extremely easy to top radioactive waste. Every single pollution tops radioactive waste since radioactive waste sits in a storage cask, and the other types of pollution go in the air I breathe. Your position makes no sense.

> I just happen to think waste from nuclear fuel is easier to "not produce" right now.

So instead you want more fly ash? Picking "don't make electricity" is not an option.

> what to do with it once it's there

Don't do anything with it, just leave it there. When technology improves, use it for fuel.

> I find any radiation exposure leading to death by lung cancer horrifying.

And I guess coal dust doesn't bother you? Or ozone leading to lung cancer? Or particulate matter (PM2.5)? It has to be radiation I guess.

> It is inherently a better idea to not use fuel in the first place ... you have to keep digging it up to keep it going ... crucial difference between renewable and fossil sources of energy

Not exactly. Renewable fuels are not actually renewable since you need to build the machine to get that energy, and that building material is not free. Nor is the land area free - I prefer to use land for other things, not cover the earth in energy harvesting machines.

You need to include everything when looking at an energy source, not just the "fuel".

> No matter how "little" fuel you need: on the long scale, it will fail with 100% certainty, eventually.

I think an energy source that will last more than 1000 years is good enough. And consider that we use barely 5% of the energy in uranium, and using that measure we have enough for more than 1000 years.

Use all the energy in uranium and it'll last 20,000 years. Then we can start using thorium, and we have even more of that than we do uranium. By that time we can start mining asteroids.

> how widely used this technology already is

Maybe I missed something but what technology are you talking about?

Re: The Great German Energy Experiment

#163
post #130

Earlier quoted context omitted.

Thats an overly useless calculation. The whole point of this exercise is: not all energy is created equal. You can waste many many millions of kWh of Norways free power and then ship the panel to Germany where it will replace energy generated through coal or nuclear. It might not make up for the energy you wasted back in Norway, but that was never the point to begin with.

> Norways free power Mind explaining what you are talking about? I mean if you have free power, then yes converting it into something else even inefficiently is good. But what free power? I know there are some geothermal plants in Iceland that capture otherwise wasted power and use it to refine aluminium, but I've never heard of countries with free power.

Norway generates 99 percent of its power through hydroelectricity. Its power is free in that there's no CO2 involved and no fossil fuels. Of course its not free; there's more to electricity than just generating it, but the prices seem cheap enough that the per capital consumption is three times that of other European states.

Norway happens to be a large producer of solar panels, too, so this example is pretty spot on.

Re: The Great German Energy Experiment

#164
post #91
post #85

Earlier quoted context omitted.

Funnily (or sadly?) enough, coal plants emit more radiation per year into the atmosphere than nuclear power plants. That's excluding all the other pollutants they send out, from mercury to lead to carbon, which are far worse.

That is a disputed fact (when taking into account the radioactive waste and thinking about what "into the atmosphere" means, at least that is what I remember from the reports about the last study concerning this), on one hand, but even if it were right: It's less than the radiation generated in the event of a disaster and not bundled into a pile of radioactive waste you can't place nowhere. Edit: For the downvoters:…

It's not very convincing.

For instance:

"What it really means is that radiation emissions to the environment from an operating nuclear power plant actually are lower than the radioactivity emitted from a coal plant through fly ash residues. That’s because the reactor vessel, fuel rods, and any radioactive waste on site are well shielded, whereas fly ash, with small amounts of deadly radioactive substances, simply is emitted into the environment."

The author appears to be saying, well, if you ran an un-shielded nuclear reactor and threw all the pollution in the air on purpose instead of containing it, then coal ash emits less radiation into the atmosphere. Well, okay, fair enough, but in practice we don't purposely take nuclear waste and fertilize our crops with it, and I don't think anyone's arguing for that.

Re: The Great German Energy Experiment

#165
post #130

Earlier quoted context omitted.

> Norways free power Mind explaining what you are talking about? I mean if you have free power, then yes converting it into something else even inefficiently is good. But what free power? I know there are some geothermal plants in Iceland that capture otherwise wasted power and use it to refine aluminium, but I've never heard of countries with free power.

Norway generates 99 percent of its power through hydroelectricity. Its power is free in that there's no CO2 involved and no fossil fuels. Of course its not free; there's more to electricity than just generating it, but the prices seem cheap enough that the per capital consumption is three times that of other European states. Norway happens to be a large producer of solar panels, too, so this example is pretty spot on…

Well if that's the case then more power (pun accidental) to them.

But can't they build a power grid and ship the electricity directly to someone instead of bundling it in the form of a solar cell?

Re: The Great German Energy Experiment

#166
post #158
post #151

Earlier quoted context omitted.

Hmm, this is slowly turning into word-twisting. Obviously, "pollution created" is a negative benefit output and "energy produced" is a positive one. I guess the actual problem in our discussion is that you have a profoundly different understanding of pollution since my cutoff is pretty much at "any nuclear waste".

> since my cutoff is pretty much at "any nuclear waste" Really? So I guess there is not much point in talking to you further. (Although I guess other people are also reading these threads.) It might help your case if you explained why, but I'm betting it's irrational fear, not anything you could explain. Me, I prefer to measure my pollution in terms of damage caused, not fear. There is a pollution action day in my ci…

Nah, fear isn't really the issue here, I would say that I have a rather calculated understanding of why I find radioactive waste so problematic (and since you asked, you'll have to endulge the full explanation).

For me, it comes down to what kind of pollution we are talking about and radioactive pollution is particularly nasty to me as it represents a chaotic pollution that is just exceptionally hard to deal with.

Let's say the simplest, non-chaotic, kind of pollution is "dirt on your shoe" - you know where it came from (that thing you just stepped in), you know where it is (you see it on your shoe), what it does (hardly anything, except look bad) and how to get it out (wash it off).

With radioactive pollution, knowing where the pollution is coming from can already be a tough job - if you have a known leak, sure, that's where it's coming from. But often, you have to use a Geiger counter to detect it in the first place and often times, you then still have to figure out where the actual source is.

Where it went is mostly a statistical science, which is only comforting if your arm chair is not close to the accident in question. If it is, it's highly distressing.

Next up, it's still completely up for graps what it does - for humans, it can be anything from a challenged immune system to instant death, depending on the dose. (Although the latter is reserved for those rare occurances where you happen to hang out with the direct fallout of an exploding atom bomb, I believe.) Most of the time, in an accident, you only determine how bad it was after the fact. At minimum, it always carries a risk of mucking with your DNA or giving you a higher chance of cancer down the road (we have differed on how "horrifying" this prospect is, before).

How to get it out is where it gets even worse - most of the time, you scrap together everything that you determined to be affected in step two and put it in sealed containers, which isn't helpful if that thing is 'most of your own cells' (although the people around you will differ on that opinion). Your most likely prospect in terms of any kind of unusual exposure is to die slightly earlier and a lot shittier than you had anticipated.

In conclusion, I would say that it's more of a "we simply don't fully understand what we unleash, so let's develop what we do understand" concern. Not a "omg, a castor drove through Italy, I'm gonna get cancer tomorrow" fear.

> There is a pollution action day in my city right now because of people like you, and I'm not happy about it. I want them to shut down all hydrocarbon electric plants (save the hydrocarbons for cars), and switch everything to nuclear.

That almost made me LOL - Why is it "because of people like [me]"? Maybe it's time for me to get off your lawn?

Re: The Great German Energy Experiment

#167
post #162
post #150

Earlier quoted context omitted.

> Fly ash is much worse, since it's also radioactive My apologies, I was indeed talking about radioactive waste in general being hard to top in terms of pollution. It goes without saying that I'm not terribly happy with how this country is getting into coal lately. So yes, fly ash is definitely a concern as well. I just happen to think waste from nuclear fuel is easier to "not produce" right now. > A pollution source…

> radioactive waste in general being hard to top in terms of pollution What? It's extremely easy to top radioactive waste. Every single pollution tops radioactive waste since radioactive waste sits in a storage cask, and the other types of pollution go in the air I breathe. Your position makes no sense. > I just happen to think waste from nuclear fuel is easier to "not produce" right now. So instead you want more fly…

> Every single pollution tops radioactive waste since radioactive waste sits in a storage cask

Of course, preferably, every type of pollution should sit in a storage cask. I was under the impression that we were discussing the potential of pollution of different pollutants. If we compare storage casks, we get to actually compare how dangerous they are. In that comparison, radioactive waste should win the battle for what is most dangerous.

> So instead you want more fly ash? Picking "don't make electricity" is not an option.

Fly Ash is mostly produced by coal plants. Where did I say I support those? Capturing fly ash in other processes is comparatively simple when you do it right - although writing that may just spin into another discussion of why you think it's actually the other way round and it's radiation that is more easily contained and managed.

> Don't do anything with it, just leave it there. When technology improves, use it for fuel.

No, that's the point - it's not even "there", it's in holding facilities right now, because we still haven't decided what this "there" actually is.

Also - if you ask me to grant you that we will develop this improved technology - why is it different for alternative, renewable sources of energy?

> And I guess coal dust doesn't bother you? Or ozone leading to lung cancer? Or particulate matter (PM2.5)? It has to be radiation I guess.

Well, that's again putting words in my mouth. Pollution bothers me - there. Radioactive pollution bothers me most. That's all there is to it. I should be allowed to not be OK with multiple types of pollution, right?

> Not exactly. Renewable fuels are not actually renewable since you need to build the machine to get that energy, and that building material is not free. Nor is the land area free - I prefer to use land for other things, not cover the earth in energy harvesting machines.

Note that I wrote "renewable source", not "renewable fuel". Once you've built a wind turbine, it kind of keeps going (save for repairs along the way). You don't have to rebuild it at the rate that you have to go back to the mine to dig up more fuel. Which you have to do for energy from fossil fuels - for which you also have to build the facilities.

> Use all the energy in uranium and it'll last 20,000 years. Then we can start using thorium, and we have even more of that than we do uranium. By that time we can start mining asteroids.

Not sure how to respond to that other than that it sounds very old fashioned and boring and I'm still not convinced it will hold pace. Not to mention that it is in no way a justification, just an excuse to use the fuel. Renewable sources of energy are also just "lying around" ready to be "mined" by us. And they are, to me, universally less concerning in terms of environmental impact when compared to nuclear energy.

> Maybe I missed something but what technology are you talking about?

The article talks about 17% usage of renewable energy sources in Germany for 2010 - most of it in wind, followed by hydro and your dreaded solar at a distant third place. In any case - I would think that's substantial enough to render your original assertion moot.

Re: The Great German Energy Experiment

#168
post #165

Earlier quoted context omitted.

Norway generates 99 percent of its power through hydroelectricity. Its power is free in that there's no CO2 involved and no fossil fuels. Of course its not free; there's more to electricity than just generating it, but the prices seem cheap enough that the per capital consumption is three times that of other European states. Norway happens to be a large producer of solar panels, too, so this example is pretty spot on…

Well if that's the case then more power (pun accidental) to them. But can't they build a power grid and ship the electricity directly to someone instead of bundling it in the form of a solar cell?

No, because, as has been pointed out to you in another branch of this discussion, it is actually economically reasonable to build a solar cell that will yield more power than you put into building it.

Seriously dude, get over your obsession about solar panels and accept the fact that you simply didn't have your facts straight.

Re: The Great German Energy Experiment

#169
post #89

Earlier quoted context omitted.

>Historically, there have been several large accidents, Tschernobyl, Fukushima, Three Mile, and several more smaller ones which would almost been fatal. So what? Those accidents are miniscule in comparison to the everyday operation of a coal plant. The damage caused by the worst nuclear accidents in human history is still less than the every day operation of a coal plant. Hell, we've lost more people to coal mine cav…

1. No modern coal-plant leads to waste areas of uninhabitable land. Nuclear Plants do. 2. We do coal mines way longer. Even if the number is right, that "we've lost more people to coal mine cave ins than we have to nuclear accidents", (which is hard to agree with, cause it is statistically a hard problem to count the ones still dying from cancer years later because of Tschernobyl for example), that number would be me…

> 1. No modern coal-plant leads to waste areas of uninhabitable land. Nuclear Plants do.

http://en.wikipedia.org/wiki/Fly_ash

Over 71 million tons of the stuff per year (According to wikipedia sources) in the US alone that has to be stored somewhere. Mostly* in landfill sites or ash ponds which renders them "waste areas of uninhabitable land", and this is part of normal operating procedures, not when something goes catastrophically wrong.

* Recycling accounts for 43% according to wikipedia sources.

Re: The Great German Energy Experiment

#170
post #51

Earlier quoted context omitted.

>Inevitably, some hot July week will come when a high-pressure system stalls over Europe, stilling turbines just when sunburned Germans reach for their air conditioners The summer in Germany isn't that hot. Middle europe, not california. Accordingly, we don#t have air conditioners (in general) These scenarios do happen. They're not always as straight-forward as the one suggested (low production/high demand). A few we…

I had no idea too much electricity could be a problem? I was trying to read more about this effect but google has no answers for me. Also, surely the obvious thing to do would be turn off some of the turbines in that situation?

The problem is mainly economic. Wind and solar can produce with essentially zero marginal costs. (The cost of producing an additional kWh is negligible, if one is not accounting for upfront investments.) And therefore they can sell at any price (and generate additional revenue). This forces conventional power plants to shut down and there is possibly not enough reserve capacity if renewables fluctuate. (For engineering it is a problem which can be easily solved with an resistor ;)
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