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Why isn't nuclear power considered renewable?

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Reply 20
Cheers :smile: not sure where to post tho?
Original post by Kadak
Posted from TSR Mobile

Fusion is renewable.Fusion uses hydrogen as the its energy source and hydrogen is the most abundant element in the Universe. nuclear fusion is renewable in the same sense as solar and wind, those will only last as long as the Sun keeps shining.Even if the Sun stopped, shining Hydrogen will still be available.

I think the point is that by using nuclear fusion we will cause Hydrogen to be used up faster, whereas wind and solar wouldn't cause the sun or wind to be used up faster. I.e. if you ran a trillion fusion reactors at full power the earth would run out of hydrogen eventually, but if you covered every square meter of the planet in wind turbines made out of solar panels, we wouldn't make the sun die any quicker. So even though we do have enough hydrogen last us for thousands of years, the amount is still finite, so it isn't renewable.
Reply 22
Original post by Chlorophile
There is information about the solar system and about Earth that we can only get from sources outside of the Earth because there's not been any significant activity for billions of years. Industrial activity on the moon wouldn't completely invalidate its archives but once again, I ask the question: Why? We can easily cope with the resources we have on Earth if we behave responsibly. To have to resort to the moon is to accept that we are incapable of managing our own resources properly and if that's the case, isn't it incredibly irresponsible to start trashing other bodies once we've sucked our own planet of usefulness? I've used the virus analogy before and I think it works well. I'd like to think that humans are better than viruses, that simply exploit a host until it's no longer useful before discarding it and moving over to a new host. We can live sustainably, it just requires care and putting value in the importance of sustainability and nature, as well as accepting that we are simply intelligent animals rather than god-like dominators of nature.

Your geopolitical argument doesn't make sense. As long as you've got particular groups dominating resources that everyone needs, you're sowing the seeds for conflict. The only way of solving this is by using energy sources that everyone can access.


I think humans aren't as good as we'd like them to be. Couldn't you use that virus analogy to the human consumption of animals, in which case I have reservations (although the justification, if you want me to tell you what it is, can be misused a lot for many evil things)? I however accept your analogy to argue against moon exploitation.

You are putting my maxim 'if it's not practical, then don't do it' to the test! One could argue that getting these groups to drop their claims to the world's resources is impractical, yet another may say that my maxim can be manipulated as a cover for cowardice and indecisiveness and to justify the status quo and arguably, conservatism.

I would however love a solution where we can encourage groups with incentives to refrain from drilling oil, mining coal, or pumping gas, and instead try to take advantage and profit from the rapidly advancing technology and in the meantime invest in renewable energy! It's my view that it is in the best interest of the people of Kurdistan to make revenue from something which outlasts oil!

But for now, we must accept the fact that current reality will last for quite a while. To stop the situation of particular groups dominating resources, we must (currently) either persuade them (unlikely) or dismantle them (euphemism for bombing ISIS! :biggrin:). There are some humans who are greedy, unfortunately, and the current dilemma I pose is a recognition of the present reality. However, it is my view that the more and sooner we seriously invest in renewable energy, as the price of renewable energy becomes lower than oil (peak oil will be reached in 38.5 or so years apparently, so fewer people will buy it as the price increases), these individuals will pay the price for their greed and will lose their money.

Would your arguments against moon-destroying apply to asteroid mining as well, considering that there are so many asteroids out there?

Shall we carry this discussion/argument/debate elsewhere?

P.S Am I writing clearly? My former geography teacher said that my QWC needed to be improved.
(edited 9 years ago)
Reply 23
Original post by edahmu
Cheers :smile: not sure where to post tho?


In the A levels section in TSR perhaps?
Reply 24
(My arguments are likely going to fall like dominoes again).
Original post by flibber
I think humans aren't as good as we'd like them to be. Couldn't you use that virus analogy to the human consumption of animals, in which case I have reservations (although the justification, if you want me to tell you what it is, can be misused a lot for many evil things)? I however accept your analogy to argue against moon exploitation.

You are putting my maxim 'if it's not practical, then don't do it' to the test! One could argue that getting these groups to drop their claims to the world's resources is impractical, yet another may say that my maxim can be manipulated as a cover for cowardice and indecisiveness and to justify the status quo and arguably, conservatism.

I would however love a solution where we can encourage groups with incentives to refrain from drilling oil, mining coal, or pumping gas, and instead try to take advantage and profit from the rapidly advancing technology and in the meantime invest in renewable energy! It's my view that it is in the best interest of the people of Kurdistan to make revenue from something which outlasts oil!

But for now, we must accept the fact that current reality will last for quite a while. To stop the situation of particular groups dominating resources, we must (currently) either persuade them (unlikely) or dismantle them (euphemism for bombing ISIS! :biggrin:). There are some humans who are greedy, unfortunately, and the current dilemma I pose is a recognition of the present reality. However, it is my view that the more and sooner we seriously invest in renewable energy, as the price of renewable energy becomes lower than oil (peak oil will be reached in 38.5 or so years apparently, so fewer people will buy it as the price increases), these individuals will pay the price for their greed and will lose their money.

Would your arguments against moon-destroying apply to asteroid mining as well, considering that there are so many asteroids out there?

Shall we carry this discussion/argument/debate elsewhere?

P.S Am I writing clearly? My former geography teacher said that my QWC needed to be improved.


You seem to be treating sustainability like it's something that's kinda nice if you can afford to do it but not totally necessary. Sustainable, by definition, means an activity that you can pursue indefinitely. If something isn't sustainable, it's going to end at some point whether you like it or not. If humans keep disregarding the environment, we are ultimately going to be the ones to lose out the most because the greatest economy in the world is utterly worthless if you haven't got a planet that can actually sustain civilization on it. We are literally talking about the livelihoods of billions upon billions of people who have yet to be born here, this is not a trivial matter.

We shouldn't be giving Oil and Gas companies incentives to stop drilling. That's as absurd as me demanding an incentive from you to stop throwing my trash in your garden. When a company pollutes, that pollution has to go somewhere. Pollution doesn't respect human-designated borders, it goes all over the world. Climate change and air pollution affects everyone on the planet, whether they're responsible for it or not. The default should not be "I have a right to pollute and I should be compensated if I'm asked to stop", the default should be "I have no right to pollute and should be severely punished if I do". I don't see why you're so happy for companies to be given the right to pollute the environment you live in.

The current reality cannot be allowed to last for "quite a while". We literally have ten years for carbon emissions to peak and start rapidly decreasing before catastrophic climate change becomes inevitable. We don't have time to play with. The stakes in this game are absolutely enormous, we're talking about the next millennia. People keep talking about how unfair it is to pollute our children's earth. That is a massive understatement - it's not just going to affect them, it's going to affect hundreds of generations into the future. All for a little bit of short term convenience and the profit of a small number of economic elites. It's absolutely absurd and it would be funny if it wasn't so serious.

I'm also absolutely against mining asteroids but less so than mining the moon. And by the way, we're already passed peak oil by all reasonable estimates.

And you're writing just fine.
Original post by jonzza_81
I think the point is that by using nuclear fusion we will cause Hydrogen to be used up faster, whereas wind and solar wouldn't cause the sun or wind to be used up faster. I.e. if you ran a trillion fusion reactors at full power the earth would run out of hydrogen eventually, but if you covered every square meter of the planet in wind turbines made out of solar panels, we wouldn't make the sun die any quicker. So even though we do have enough hydrogen last us for thousands of years, the amount is still finite, so it isn't renewable.


Hugh,You won't need need 1 trillion nuclear fusion plants.Hydrogen is the most abundant element in the Universe, the Sun will stop shining before Hydrogen runs out.
Reply 27
Original post by Chlorophile
You seem to be treating sustainability like it's something that's kinda nice if you can afford to do it but not totally necessary. Sustainable, by definition, means an activity that you can pursue indefinitely. If something isn't sustainable, it's going to end at some point whether you like it or not. If humans keep disregarding the environment, we are ultimately going to be the ones to lose out the most because the greatest economy in the world is utterly worthless if you haven't got a planet that can actually sustain civilization on it. We are literally talking about the livelihoods of billions upon billions of people who have yet to be born here, this is not a trivial matter.

We shouldn't be giving Oil and Gas companies incentives to stop drilling. That's as absurd as me demanding an incentive from you to stop throwing my trash in your garden. When a company pollutes, that pollution has to go somewhere. Pollution doesn't respect human-designated borders, it goes all over the world. Climate change and air pollution affects everyone on the planet, whether they're responsible for it or not. The default should not be "I have a right to pollute and I should be compensated if I'm asked to stop", the default should be "I have no right to pollute and should be severely punished if I do". I don't see why you're so happy for companies to be given the right to pollute the environment you live in.

The current reality cannot be allowed to last for "quite a while". We literally have ten years for carbon emissions to peak and start rapidly decreasing before catastrophic climate change becomes inevitable. We don't have time to play with. The stakes in this game are absolutely enormous, we're talking about the next millennia. People keep talking about how unfair it is to pollute our children's earth. That is a massive understatement - it's not just going to affect them, it's going to affect hundreds of generations into the future. All for a little bit of short term convenience and the profit of a small number of economic elites. It's absolutely absurd and it would be funny if it wasn't so serious.

I'm also absolutely against mining asteroids but less so than mining the moon. And by the way, we're already passed peak oil by all reasonable estimates.

And you're writing just fine.

I may be working backwards, but:
-1) Thanks. I just needed reassurance that I wasn't losing the trail.

0) Shall we continue this somewhere else? This doesn't really have much to do with nuclear fission or fusion!

1) If we've passed peak oil, surely the only reason oil is still seen as cheap is because of huge subsidies. If we can start investing heavily with renewable energy now and scrap those subsidies and instead subsidize renewable energy, we can pretty much force out the oil executives from their destructive business by outcompeting them. That's my view. However, there are some (perhaps advocates of the Austrian School of Economics) who believe that subsidies represent government interference in the energy market and we should wholly let consumers decide- but I think if the consumers have been irresponsible up to this point, then the government should step in. Too many times, a 'I'm just one person; my actions won't itself do much' attitude prevails amongst the public.

(By the way, given that some of those in your year may end up in the petroleum industry and work for an oil company, would you feel sorry if they lost their jobs and became unemployed? On one hand, one may say that it's a Thatcher-esque policy [my former maths teacher was accused of being a Thatcherist job-killer on the Tube by some lady when he said that in the future, land public transport won't need drivers. That lady said that she was still feeling the effects of what Thatcher did] to drop jobs like that, but on the other hand one could say that it's their punishment for destroying the Earth and enabling huge ecological disasters)

2) I agree that the current reality is ultimately unsustainable. However, While we can send oil companies to court (and I don't see a problem in your logic in that case), the reason why I said that the current reality will last for now is this: how do we get the OPEC nations to change in 2015. I may be wrong, but the most practical way for the whole world is to start the solution outlined in 1). I can still think of huge geopolitical consequences even in my plan outlined above, unless we show them a sustainable way of making profit to compensate for the loss of oil revenue. We could make some international legislation regarding this issue (for example, penalizing states with hefty fines for failing to ensure environmental standards), but that needs the cooperation of the whole planet and assent of the largest polluters. What do you think?

3) By the way, what is your opinion of the Gulf Stream breakdown hypothesis? The only article really against it which I can find is this:

http://www.ldeo.columbia.edu/res/div/ocp/gs/

it's certainly seems very convincing, but...

it sort of goes against what I've heard from in my Geography lessons.

4) Why are the Greens having more success in other European countries than here?

P.S. Please remember that I do not speak for the many oil companies around the world! Why not email them for fun and see what sugarcoated variant of 'we need profit' you get in reply? Or maybe send a letter to your MP regarding this, or preach to someone like him, who denies in anthropogenic climate change:
http://www.thestudentroom.co.uk/search.php?do=finduser&u=48486

I would like to apologize for the length of this post.

P.P.S Am I speaking nonsense again?
(edited 9 years ago)
Original post by Kadak
Hugh,You won't need need 1 trillion nuclear fusion plants.Hydrogen is the most abundant element in the Universe, the Sun will stop shining before Hydrogen runs out.
I think you are missing the point somewhat.

The hydrogen needed for use as fuel in the most promising (1st generation) nuclear fusion power generation technologies, are the isotopes 2H (deuterium) and 3H (tritium).

Deuterium is extracted from sea water at around 150ppm. No problems with sourcing deuterium then.

Tritium, on the other hand, is extremely rare as a naturally occurring element. It is radioactive with a half-life of 12.32 years and sufficient quantities can only be produced in a nuclear process by bombarding Lithium-6 with neutrons currently in conventional fission 'breeder' reactors.

Lithium-6 is a finite irreplaceable resource.

Proposed 2nd generation fusion power requires Helium-3 as a fuel and is also an extremely rare element. It can also be produced from the beta-decay of tritium and therefore suffers form an even worse requirement for Lithium-6.

Helium-3 also occurs in extra-terrestrial locations with moon regolith touted as a potential source. But since an estimated 150 million tonnes of regolith is needed to produce 1 tonne of Helium-3, gigantic open cast lunar mining operations are controversial to say the least.

The commercial advantage of fusion power is far from maturity as is the technology for industrial scale fusion-power generation.
(edited 9 years ago)
Original post by uberteknik
I think you are missing the point somewhat.

The hydrogen needed for use as fuel in the most promising (1st generation) nuclear fusion power generation technologies, are the isotopes 2H (deuterium) and 3H (tritium).

Deuterium is extracted from sea water at around 150ppm. No problems with sourcing deuterium then.

Tritium, on the other hand, is extremely rare as a naturally occurring element. It is radioactive with a half-life of 12.32 years and sufficient quantities can only be produced in a nuclear process by bombarding Lithium-6 with neutrons currently in conventional fission 'breeder' reactors.

Lithium-6 is a finite irreplaceable resource.

Proposed 2nd generation fusion power requires Helium-3 as a fuel and is also an extremely rare element. It can also be produced from the beta-decay of tritium and therefore suffers form an even worse requirement for Lithium-6.

Helium-3 also occurs in extra-terrestrial locations with moon regolith touted as a potential source. But since an estimated 150 million tonnes of regolith is needed to produce 1 tonne of Helium-3, gigantic open cast lunar mining operations are controversial to say the least.

The commercial advantage of fusion power is far from maturity as is the technology for industrial scale fusion-power generation.




Posted from TSR Mobile
No, I'm saying when Nuclear fusion reaches its full potential with all the problems solved that it can be considered a renewable resource.The finite of the resources for fusion isn't that finite compared with how long the Sun is shining.Nuclear fusion will also potentially give us more energy compared with solar and wind.
Original post by Kadak
Posted from TSR Mobile
No, I'm saying when Nuclear fusion reaches its full potential with all the problems solved that it can be considered a renewable resource.The finite of the resources for fusion isn't that finite compared with how long the Sun is shining.Nuclear fusion will also potentially give us more energy compared with solar and wind.


I'm not saying it will never be possible (no-one can ever say that), but don't hold your breath this side of the 22nd century.
(edited 9 years ago)
Original post by Kadak
Posted from TSR Mobile

Fusion is renewable. nuclear fuaion won't destroy anything your confusing yourself.Hydrogen is the most abundant element in the Universe.


Abundant but not infinite? Fusion converts matter into energy so there is less hydrogen at the end of it?
Original post by BasicMistake
Abundant but not infinite? Fusion converts matter into energy so there is less hydrogen at the end of it?




Posted from TSR Mobile

All forms of nuclear power converts matter into energy, but fusion fuses hydrogen to form helium as a waste product and lots of energy.Mass is a form of energy anyway not sure what your point on that is.
Original post by Kadak
Posted from TSR Mobile

All forms of nuclear power converts matter into energy, but fusion fuses hydrogen to form helium as a waste product and lots of energy.Mass is a form of energy anyway not sure what your point on that is.


My point is that there is a finite amount of hydrogen in the universe. We will get a LOT of energy by fusing that hydrogen but it won't be infinite energy.

And if we assume we then have the technology to start fusing helium and then even heavier elements, they will theoretically run out sooner or later.
Reply 34
Original post by BasicMistake
My point is that there is a finite amount of hydrogen in the universe. We will get a LOT of energy by fusing that hydrogen but it won't be infinite energy.

And if we assume we then have the technology to start fusing helium and then even heavier elements, they will theoretically run out sooner or later.


There's also a finite amount of negentropy, do you have a point? For all intents and purposes, a universe of Hydrogen may be considered infinite hydrogen to the extent that physical infinities make any sense in the first place.

Whether there's infinite deuterium or tritium in the same sense... I don't know. Anyone know how much deuterium we have?
Original post by lerjj
There's also a finite amount of negentropy, do you have a point? For all intents and purposes, a universe of Hydrogen may be considered infinite hydrogen to the extent that physical infinities make any sense in the first place.

Whether there's infinite deuterium or tritium in the same sense... I don't know. Anyone know how much deuterium we have?


I'm probably wrong about everything seeing as I have very limited knowledge about this. But can you explain the thing about finite negentropy to me? I get that it is the concept of disorder becoming order.
Reply 36
Original post by BasicMistake
I'm probably wrong about everything seeing as I have very limited knowledge about this. But can you explain the thing about finite negentropy to me? I get that it is the concept of disorder becoming order.


To be honest, I'm not quite sure what the exact definition is. Basically, the universe will die a heat death eventually as the second law of thermodynamics finally maximises entropy and stops anything of note ever happening again (barring one hell of a quantum fluctuation, of course).

If I had to guess, negentropy is just a concept for reverse of entropy i.e. since we are x amount below the maximum entropy for our universe, we have x amount of negentropy left to use up. I might be wrong on that, but the point is everything is non-renewable if you class using up all matter in the universe (very slowly) as being non-renewable. I'll do a quick google and edit this if I'm horribly wrong.

EDIT: Okay, so the moral is to not guess the definitions of physics words. Negentropy appears to be an actual thing, rather than purely a description of the absence of entropy (as I all so inelegantly guessed above). Unfortunately the details are shrouded by the fact that I know next to no thermodynamics so I don't understand any of the equations... my best guess is that negentropy represents a decrease in entropy caused by external word of some kind (so that e.g. a refrigerator produces negentropy to cool it's contents, but in return generates more entropy as waste heat).
(edited 9 years ago)
Nuclear power is considered renewable, if it happens in the sun. If it happens somewhere else, it isn't.

Renewable energy is not a description that can be seriously defended scientifically. Of course no energy is renewable, nor is it destructible. Energy is always conserved, free energy is always entropically degraded to useless waste heat, and all sources of free energy are finite.

So renewable energy is more like a theological term. If a source is considered "good" by members of a certain belief group, it's renewable. Otherwise, not.
(edited 9 years ago)
Original post by BasicMistake
I'm probably wrong about everything seeing as I have very limited knowledge about this. But can you explain the thing about finite negentropy to me? I get that it is the concept of disorder becoming order.


Good debate B-).
Original post by Kadak
Good debate B-).


I know when I am beaten :biggrin:

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