My apologies. I meant it could have replaced some coal, not all. Though I understand Brazilian steel is made using charcoal, so coal is not absolutely necessary.
Steel is iron that has had carbon added to it; it's then quenched, which rapidly reduces its temperature, making it very hard, but also brittle. If it must be both hard and strong, then it is tempered, by re-heating it until it is red hot and then cooling it slowly.
The process of adding carbon to iron can be combined with smelting the iron ore. This results in a considerable savings in energy, and, as it happens, also in carbon emissions. Furthermore, the heat from this process can be used in tempering, resulting in even further savings of both energy and carbon emissions. Coke and iron ore are fed in; the carbon in the coke combines exothermically with the oxygen in the iron ore, and carries it off, leaving molten iron; some of the carbon remains in the iron, turning it into steel. The steel is quenched, hardening it, then reheated using heat from the next batch of ore and coke into the converter and finally tempered. Hardened, tempered steel comes out the far end, and as little carbon is emitted as can be, and as little coal is used as can be. Ideally, all of the oxygen to fuel the burn comes from the ore; in practice, very little of it comes from the surrounding air.
The reasons this type of process is used is because it makes the most product for the least money, and the owner of the plant produces a high-quality product for a low price and makes money, which is, from their point of view, an important part of the point of doing it. Designing this process to work with a liquid instead of solid coke would not be child's play; I'm sure it could be done, but why use more expensive oil instead of less expensive coal?
During the manufacture of cement, a component of concrete and also the material used to stick bricks or stones together into structures and surfaces, powdered limestone is mixed with clay and heated; the calcium carbonate in the limestone and the magnesium carbonate in the clay both release carbon dioxide as they decompose and combine with the silicon oxide and aluminum oxide in the clay. Furthermore, coal is commonly burned to heat the mixture. Cement manufacture is therefore a strong global warming contributor, almost as much so as power generation, and there are not good ways to avoid the release of carbon in the industrial process. This carbon will therefore need to be sequestered, as it will need to be in power generation that uses fossil fuels. This will make cement, and concrete, more expensive.
Concrete and steel are the two most important materials for industrial civilization. Our cities are quite frankly impossible without these materials; we use them to bring water and food into the cities, to remove waste, to build buildings, and to provide routes for transportation of people and goods in and out of them. The reason our society is one of the richest in the history of the world is because we can do these things easily and cheaply. This leaves time and effort for the further creation of wealth, and for social services, neither of which would be possible but for the ease of commerce that cities provide, and the economic advantages of being able to put up a building without having to conscript a hundred thousand people to do it. A modern skyscraper can house workplaces for fifty thousand workers, and can be built by a crew of less than a thousand people, in a couple years or less. Take away this capability, and most people will have to spend much more time getting food and water, and will have correspondingly less time to create wealth. You can see the results of this in the third world, and in history exhibits.
In addition, all the machinery of modern agriculture, which is needed to grow enough food to feed everyone, uses steel; and the plants where the food is prepared are made from concrete. The food is transported on roads and railroads, built with steel and concrete, and more steel and concrete is needed when they must be repaired. Steel is needed to make the trucks and the railroad cars to transport all of this food. And if the food is going overseas, then steel and concrete are needed to build and repair the ships that transport it, and the docks where it is on- and off-loaded. If any of these things stops happening, people are going to starve. And the people who build many of these things live in the cities, as do the ones who make sure that everyone who does everything gets paid, and that the food goes where it needs to go. So the cities can't stop either. "Just grow it locally" isn't an option for many people around the world; the US ships food all over the planet. People will starve if we stop.
This may just begin to give you the idea of how interconnected things have become all over the world. There is very much more just like it. What we have to do is figure out how to do all this without making as much CO2 as we do now; we can't stop doing it, because people will starve if we do. That's how things are. We can wish all we like that they weren't, but they are, and that's that.
So when I see you talk about conserving energy, and using renewable energy sources, it seems like a good idea, but I know it's not going to fix things; we have to figure out how to not only make up the difference between what we can conserve and what we currently have to burn coal to get, we also have to figure out how to get all that transportation done without burning any more coal or oil than we can figure out how, and electricity is what's going to do that for us. Unless you want to see a billion people starve. We can't stop doing all this industry; it's where the food, and the clothes, and the medicines, and the houses, and the buildings where all the business that gets the food distributed gets done, and the factories where all the machines to grow it and transport it get built, all come from. Stop and the whole dang thing falls apart, like a house of cards, and a billion people starve to death, and if they've got nuclear weapons, maybe they shoot some of them off first. And that is not hyperbole. Ask an economist some time.
I know most houses are heated with natural gas. We've also largely eliminated coal powered trains for transportation. My point is not that there has been no fuel-switching. My point is that it's had no impact at all on the use of coal. We've just found other uses for the coal.
Yeah, like for growing things for people to eat and transporting them.
Part of the reason I'm so harsh about this stuff is that I see a lot of people who just don't get the fact that there are people depending on all of this stuff getting done. And they'll die if it stops. So when someone says, "We should just stop doing all this industry and stuff, it's bad for the environment," my response is, "Yeah, it doesn't matter if all those brown people we're feeding starve to death." And that's nasty and sarcastic, but it's the truth.
We can't go back to an agrarian society unless a couple billion people die off. That's how the world is. And those people, they're going to have kids, so there's going to be more people. At some point we have to do something about that, but right now, we've got a more pressing problem, which is global warming. Once we've got that solved, then we can worry about population control. Until then, we'd best figure what to do about generating the energy we need to keep all those people fed, without making any more CO2 than we can help. Renewables sounds great. Conservation sounds great. If you've got some alternative to nuclear up your sleeve or under your shirt or something, by all means let's hear about it; but stop trying to tell me we can just stop doing industrial things and it will be OK, because it won't.
I'm not trying to be difficult here. But all I've seen is assertions that the industrial base requires a lot of electricity and is structurally resistant to efficiency improvements. That much I know. I've said before that I don't have a lot of knowledge and I'd appreciate more. Industry also has widely varying requirements. So tell me what you know. I'd be glad to learn.
The most important parts are above. I wish I saw an alternative; but I don't.
Because without specific examples, I come to some of my own conclusions. The auto industry is being bailed out again, for example, in Canada. When we should be worrying about reducing our emissions, this seems profoundly wrong.
If we could use electric cars and generate the electricity without making too much CO2, that would help, don't you think? As a matter of fact, there is a company in Canada called Zenn Motors that is getting ready to make electric cars that use a technologically advanced supercapacitor, that is to be supplied by a company in Texas called EEStor, for electricity storage. This supercapacitor doesn't pollute like lead-acid batteries do, and lasts a lot longer as well. If this works, both companies will get rich and electric cars will take a quantum leap. And gasoline powered cars will be nothing but an evil memory.
But in order for that to happen, there have to be auto workers who can build the cars, and until the design is ready, and the general public has decided they want these electric cars, those auto workers have to eat, and people will need cars until then, too. If the Canadian government doesn't bail out the auto industry, all those auto workers starve. And when it comes time to build the electric cars and get rid of all the old gas guzzlers, who will build them? Nobody, because the people with the skills will all be dead or have other jobs. If you'd like, the government could let the auto industry go to hell in a handbasket and pay all those people to twiddle their thumbs until the electric cars are ready; but I don't think the taxpayers would like that much, nor the auto workers, and I bet the people who own the plants would scream bloody murder.
There are going on (perhaps over) six billion people on this planet. They all depend on one another for things. If those things stop, you're gonna have a hell of a problem. So when you set about making changes, because you've found that some really essential thing is causing a big problem, you have to go about it slowly, and not rock the boat too much, because otherwise you're going to create the ****edest mess you ever did see. Welcome to Economics 101.
Some industry should even grow, energy intensive as it is. We need more wind turbines, for example.
Yeah, and more trucks and trains and ships to ship food, and more factories to process it, and more machines to harvest it, and cultivate the soil, and more fertilizer to grow it with, and all the people who make all that stuff and operate it all have to be fed, and clothed, and have medical care, and...
Am I getting through here at all? Do you understand yet what we're talking about here? You can't just go start shutting down coal power plants without providing something in their place, you'll have worldwide riots. Wars will start over this. Would you not consider it an act of war if you stopped getting food for your people and they were considering having a riot and stringing you up? Seriously, this is the real world here. We are way, way beyond the carrying capacity of the Earth for a simple agrarian society. We can't get back without a lot of people dying.
Like I said, if you're gonna ride the tiger, don't let go of the ears.
But I know industry will be profoundly affected in the transition to a low-carbon economy. Big final emitters are being targetted in every country that's serious about climate change. George Monbiot recommends auctioning off the carbon allocated to industry. Whatever mechanism you use, energy intensive industries will suffer. Doubly so if they make energy guzzling end products.
Yep. And that's as it should be. There's no other way to do it that people will respect.
I've never seen anyone make an assessment of what industries are likely to survive, which will grow, which will shrink. But I think that planning on energizing the current industrial base in a low-carbon economy is a little myopic.
If we don't, people starve, and we get wars and riots and so forth. And anybody tells you they know which industries will do what, don't give 'em any money you can't afford to lose.
Do I really need to substantiate the fact that pumping water to houses separated by 30 metres door to door requires more infrastructure than pumping water 6 metres door to door? And what evidence do you see to support the opposite view? What I've seen is a lot of unsubstantiated assertions that demand comes first. Hindmost has also claimed repeatedly that utilities resist expansion and promote conservation for this reason, again without support. I've pointed out that many utilities are paid to promote conservation. And I've suggested (without support) that while they may be risk averse and reluctant to invest in increased infrastructure, that doesn't mean they want to see dramatic demand decreases. And when they build a new power plant, they want to see it working to pay itself off. To my knowledge, nobody answered this at all.
If you haven't gotten it by now, you never will. And here's a question for you: how are you going to build all those houses 6 meters apart? Out of what building materials? Plaster? Well, got news for you: plaster contains gypsum, and so does wallboard, and guess what? Gypsum manufacturing is a major source of CO2. Are you absolutely sure you want to rebuild 500 million houses? Think about it. The Europeans have the right idea: retrofit. Make it as efficient as you can.
It may well be a chicken-and-egg question.
Until you've read and comprehended what I've written above, you don't know what the chicken-and-egg question is. There are a couple billion people alive on this planet that wouldn't be if we hadn't provided enough food and the hope that their parents could have kids, and now they need to be fed, and that's how it is. A bunch of companies, you see, decided they wanted cheap labor, so they went over and gave these people jobs, so they got married, built houses, and had kids, and there you have it. So what do you want to do now?
That's what it was meant to be. My point was that your ideas about what might have happened if TMI and Chernobyl had not happened was equally speculative. We just don't know. But I think the idea that it would have necessarily resulted in an emissions reduction is very optimistic.
I don't. That's because I understand what's driving this, and you don't. Or perhaps by now you do. Please think your way though this. It's not some game people play in order to pretend they're important, and it's not some plan someone came up with to take over the world. It's just people doing what they do, just like you and me, and this is the consequence of it. And now we can't turn it off.
As I've said, if that were the only alternative, I wouldn't raise a single objection to anything that needed to be done. But neither have you supported your claim that a billion people would starve. That's a pretty heavy hammer to throw.
Perhaps by now you might see why I say that. I certainly hope so.
Actually, I spend a lot of time thinking about how we can avoid a "carbon police" situation. I'd much rather control emissions through market mechanisms and give people a lot of freedom about how they trade off their various priorities.
Well, as long as you're not trading off the little pleasure other people get in between what they have to do to make sure their family eats, and that other people eat, I don't see a problem with it, but make sure you understand what you're talking about.
What happens is that when people say "Hey it's impossible to live without air conditioning" and I say "No, it's not, it's been done", they assume that I want to dictate the exact conditions of what they will do. I don't.
But we have a lot of bad options. If you live in a suburban frame house in the desert with air conditioning powered by coal, realistically you need to expect something to change. There are a lot of options on the table. You can move. You can insulate. You can concentrate by moving several families into a single house. Or you can change the source of the electricity. I'd rather not tell people what to do. But when asked, it has been my consistent experience that when people understand that insulation can take care of things, that's the first option they pick. The second is changing the source to solar or wind. Many people would rather move than generate from nuclear.
And a lot of my point is that saying "We'll build a nuclear power plant because people obviously demand air conditioning" is equally presumptuous and intrusive.
I think you've got a pretty inflated idea of how much difference it's going to make. Data have been presented in this thread that show that. I think it will get done, but I don't think it will make enough difference to not need nuclear.
And you've forgotten a couple of important things. First, we have to get rid of as much of the fossil fuel power generation as we can. Second, we have to replace all the cars. And we're not doing that without a significant source of energy, and the only thing there is is nuclear. The air conditioners are aside from the point.
If you look at the links to the two English articles I sent, there was a study which indicated that you cannot attain the required emissions reductions without basically retrofitting all existing housing stock. So even though I'm not proposing which mechanisms are to be used, I'm prepared to go out on a limb here and say that addressing global warming will force almost all of us to make significant energy retrofits. If we don't embrace this soon, carbon police may have to force us. When we do it ourselves, we have a lot more freedom about how it's done.
Sure, but the problem is, that's not all that has to be done.
Why do you bring up Chinese? When have I ever suggested that anyone should starve? What view am I supposed to present evidence for?
I think you'll have a pretty good idea what my answer is from the above.
I have? Lonewulf has expressed doubts that the 0.4% share of renewables could rise to 100%. Glenn has claimed (unsupported) that we could not conserve our way out of our industrial demands. Several people have complained that wind sites are limited, the sun is weak in the north and renewables are intermittent.
I've actually responded about why things may be more hopeful. For example, I pointed out that renewables have a much higher penetration in countries that take coal reduction seriously and storage technologies are rapidly maturing as a result. Also I've pointed out that the wind studies for Ontario give a conservatively estimated potential many times our load. And I pointed out that reducing the load through efficiency and conservation is the priority. It's cheapest, fastest, safest and most reliable. I supported all these statements. Then there's sun and biomass and geothermal and other delights.
The problem is, the people who are going to build all that infrastructure, and the people who analyze what those people do, say you're wrong. They say that the efficiency of solar and wind power is too low. And if you think I want to see bird species going extinct because they get chopped up along their migration path in a wind farm, you got another think coming. These things take land, and that land has things living on it. You get out there with tractors and bulldozers and build a wind farm, or a solar farm, you're going to have environmentalists (and I'm one of them) fighting you every step of the way. I'd far rather see nuclear than that.
Again, I don't think you've thought your way through this.
But Lonewulf's comments were equally speculative anyway. Can we or can't we? This isn't a question that has a rigorous, testable answer. It depends a lot on where we put our energies. You've pointed out yourself that ramping up nuclear would not be without its own challenges.
You want my opinion? We need everything we can get. We need nuclear, we need conservation, we need wind, we need solar, we need electric cars, we need geothermal and tide power, and we're all going to have to tighten our belts to get through this. I don't think we can afford an either/or approach. I think we need to do everything we can- and I think we have the resources to do it. I'm not absolutely certain about that last part, and that's pretty scary, because the consequences are dire indeed. And we need fusion, and we need it soon, and ITER isn't soon enough. We need to pump money into every crackpot fusion scheme we can find. And we need advanced power storage technology. And we better hope the coal and oil and solar and wind and geothermal and tidal and nuclear and everything else holds out until we get fusion plants going, because if they don't, we're going to be in very, very serious trouble. Think Book of Revelations.
I don't think there's been any compelling argument presented for why it would be impossible to avoid expanding nuclear. Sorry if I've missed something. I want to note that I'm not demanding such compelling evidence either. I think all this is an exercise in envisioning future possibilities. There is no slam-dunk argument.
You're right, it is such an exercise, but you've forgotten economics, and you've forgotten that it's how people eat, or starve. That's the slam-dunk argument.
What I'll admit to is that envisioning a renewable future requires more imagination. It requires a careful scrutiny of where our energy goes and where and how it could be reduced. It requires doubting the assumption we've all gotten used to that energy needs will necessarily climb. It requires thinking about priorities a lot.
It also requires that a couple billion people die off, and I seriously doubt they will go gently into that good night. I rather suspect they will rage against the dying of the light.
What I've been trying to say is that this kind of thinking will have to permeate our thoughts anyway, whether or not we invest in a nuclear renaissance. There are some people on this forum, mhaze and Dr. Buzzo, for example, who see nuclear potential as essentially inexhaustible. Whereas I'm convinced that even if we fail to address global warming and invest in nuclear, we're still very likely to have a major energy crisis.
We agree here, but I don't think you have quite grasped what "major" could mean.
I've seen people inspired by the realization that unheated structures could actually be more comfortable than heated ones. I don't want this to be an argument between entrenched sides about whether nuclear is necessary or not. That's pointless. I only want people to realize that there are other ways of looking at things than meeting the demand for x kilowatts and that, at the very least, different perspectives can go a long way to reducing our energy dependence. So we'll need less nuclear, at the very least. But I think it's an interesting challenge to see if we can get to the point where none is necessary.
I think we'll need all the nuclear we can get, and we better hope it lasts long enough.
And in a spirit of fun, I'll suggest that those who begin with the premise that all generation from coal needs to be replaced with an equivalent amount of generation from another source are the true unimaginative luddites.
I think you are probably beginning to see why I think what I think by now. I certainly hope so.
I don't think the brown people on the other side of the world have to worry. If you look at carbon emissions per capita, we're the ones who will have to make the greatest changes in our lives. If we lead by example, it will only make it easier still for them to copy us. A couple months ago, I sat down with a couple of friends over charts of petroleum consumption per capita by country and realized that for much of the world, oil could disappear tomorrow with little appreciable difference.
You forgot where their food and clothing comes from. And a whole lot else they aren't going to give up without a fight. It's an amusing exercise, but please don't confuse it with real economics.
I got politically involved with climate change because I recognize it as the greatest human rights crisis we've ever faced. I've been concerned about human rights my entire life. So if I believed your prediction, I would be horrified.
I hope you're beginning to get horrified enough to think about what you can do; I am, and I'm doing it. When I'm not screwing around on forums on the Internet.
Perhaps what you mean is that if we don't build nuclear plants, we'll have to build coal plants and that will cause widespread droughts. I question the premise that if we don't want to build coal plants the only alternative is to build nuke plants. And it seems rather harsh to suggest "take your nuclear pill or a billion Africans will starve". I've said all along that my priority is reducing emissions drastically now. Eliminating coal is a huge part of the challenge. I would never support a coal plant over a nuclear plant. I try to make that abundantly clear to everyone I speak to.
Good. But try to keep in mind that a) there are other brown people in the world than Africans, b) there are a hundred million gas guzzling cars we need to get rid of, and c) people need to keep eating while we do it.
I know rather a lot of people who would love to be able to give up their cars. And they vote for politicians who promise to invest in more public transit, among other things. They also recognize that cars have emissions associated with manufacturing, road construction and disposal that remain even if the car is electric.
Sure, but you can minimize a great deal of that if you do it right- but only if you have enough electricity. I'd love not to have to drive much. It's a hassle. And in fact, I don't drive much. But I think you'll find that works much better in cities than in the country, and I think you'll find that a lot of people don't want to live in cities. And if you try to make them, you're going to encounter a political problem that you don't have a solution to.
I've pointed
out why I think a significant expansion of nuclear power is unlikely to occur quickly enough to power up our fleet anyway (and I referenced it).
I see things happening that are making it appear you are wrong, and they're being done by people who make a lot of money, and who are investing a lot of money in doing them. That's sufficient to make me doubt that your reference has quite as much figured out as they think they do. You should check the US NRC web site and see how many applications for combined construction and operating permits have been granted lately. Seems that there are quite a few of them. So I'd say the argument is probably moot, at least as far as the US goes.
Oh. I may well be on the wrong forum. I'm still rather new here.
I've taken this conversation considerably into political and economics territory, but I think that's necessary to understand what we are facing. Please understand that I don't think that conservation is a bad idea, or renewables- I just don't see the capacity that will be required, and I think that the consequences of failing to keep this house of cards standing are basically the end of civilization. I like civilization, and I don't want to see a billion people starve to death. And we can't burn fossil fuels any more, either. So I think nuclear power is inevitable, and I hope it gets done without creating nuclear accidents, and I intend to vote for people who I think will see to both of those things- and conservation and renewables and electric cars and insulation for houses, too.
Now, let's try to keep this conversation connected to the real world, shall we? I think it's an important conversation. But please study some economics. It might be boring, but it's about whether people eat or not, so it's pretty important.