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U.S. physicists rally around plan to build fusion power plant

sciencemag.org

171–180 of 240 posts

Re: U.S. physicists rally around plan to build fusion power plant

#171

2040s? 20+ years from now!?! Too fuckin slow!! For all Musk's faults, he recognizes such timelines are untenable, and pushes people to do the 'impossible'.

And yet quite a few Musk promises perpetually planned in the coming years will probably end up with that kind of timeframe too.

That's a fair point. I can easily think of several examples too... the boring machine (still slow), self-driving (perpetually delayed), and the hypeloop. I'm sure there are plenty of others.

Re: U.S. physicists rally around plan to build fusion power plant

#172

Earlier quoted context omitted.

> In a gram of deuterium, per e=mc^2, we get ~10^12J Deuterium is not antimatter, where they entire mass of the substance is converted to energy. In nuclear reactions only a very small percentage of matter (~1%) is converted to energy.

So by your estimate (~1%), a gram of deuterium can provide power equivalent to a year of intense sunshine?

> year of intense sunshine

per square meter.

Both are fair small quantities.

From the Wikipedia, D+T fusion leads to 17.6MeV, while their total energy is around 4.5GeV, so 1% is overstating it a few times.

Re: U.S. physicists rally around plan to build fusion power plant

#173
post #79

Ok, say I've got a new design for a fusion reactor, but it takes me 5 years to convince anyone that it's worth investigating. Fusion power has been set back 5 years. Someone please help me evaluate my design. Please! http://www.DDPROfusion.com

I can’t evaluate your design but I can evaluate your messaging. You need to do something to distinguish yourself from cranks and scammers, like write it up in a paper and get it published - and stop referring to yourself in plural.

I've tried to distinguish myself from cranks and con artists by being realistic, and explaining the principle clearly.

This isn't LENR with some mystic explanation requiring new physics. This is hot, thermal fusion contained by a novel, but very simple to understand set of fields.

I've talked to many, physicists and am open to criticism about the design. If I don't know the answer to a question I admit it.

Since it's such a new device, there hasn't been any rigorous analysis of it yet, so there is nothing to publish. It's a chicken and egg problem.

Re: U.S. physicists rally around plan to build fusion power plant

#174
post #144

Ok, say I've got a new design for a fusion reactor, but it takes me 5 years to convince anyone that it's worth investigating. Fusion power has been set back 5 years. Someone please help me evaluate my design. Please! http://www.DDPROfusion.com

>Someone please help me evaluate my design. Have you submitted your research for peer review, and if not, why?

There's only a concept and very basic simulations. I need help doing the initial rigorous analysis.

Re: U.S. physicists rally around plan to build fusion power plant

#175

Earlier quoted context omitted.

I've been helping with messaging for somebody looking for demonstration funding for an experimentally proven clean oil recovery technology and it makes me feel hopeless seeing there are so many people struggling to demonstrate potentially game changing technologies, often because people investing or allocating money have little technical competence. for those curious: http://www.envirotechdme.com If I could offer you…

But does this person own all of the intellectual property?

I do.

Re: U.S. physicists rally around plan to build fusion power plant

#177
post #162

Earlier quoted context omitted.

Just the US value from https://en.wikipedia.org/wiki/List_of_countries_by_total_hea... vs #2 (Switzerland) is $US800 000 000 000 for all US residents in extra spending.

I'm confused by these data. It's common knowledge that the US spends much more per capita on Healthcare, however the commonly offered explanation for this is that the private healthcare system in the US is less efficient than the public systems in Europe. But the graph in the provided link shows that US costs are split evenly between private spending and public spending. This is confusing because the private system i…

The current laws restrict the government healthcare programs from negotiating on e.g. drug prices, so the manufacturers name whatever absurd prices they want and the US Gov just pays it. Just another corrupt government giveaway to the private sector.

Re: U.S. physicists rally around plan to build fusion power plant

#178
post #110

Earlier quoted context omitted.

Fusion is not going to solve the sea level rise problem. You can see this by comparing it to fission. Fission fuels is not expensive on a kWh base, so cheaper fuel is not really a big advantage. Fusion plants produce radioactive waste too (perhaps less?), so you don't save yourself from that headache. Which isn't actually that big of a problem either, even if the costs are probably underestimated for fission plants.…

Wouldn't the major differentiator be the safety standards? You can't have a runaway reaction, because you need energy input to the magnet field to get more energy out. Instead of creating the right environment to get a chain reaction started if your control rods end up in the wrong place. Drop the magnet field and it all collapses. Even if you lose control of it with the magnet field on the quantity is limited, tokam…

Fusion will also be pretty much mandatory for deep space exploration and space colony ships, if we ever get that far

Re: U.S. physicists rally around plan to build fusion power plant

#179
post #72

Earlier quoted context omitted.

Most fossil-based electric generation is not oil; it's either natural gas (reasonably clean, though it does produce a lot of CO₂), or coal (terrible on many counts). I'd say that killing coal would have a large effect. It would also put entire town populations out of work — a really hard problem, read about how UK tackled it in 1970s and 1980s, it was painful and ugly.

At the end of 2016 there were 50,000 coal miners in the US.[1] Their average annual pay is $29K.[2] We could give each of them one million dollars, invested and paying out 3% annually, and the $50B it costs would be a drop in the bucket compared to the economic benefit of eliminating those carbon emissions. In fact, it would even be cheaper than the healthcare costs of pollution from coal plants, which amounts to $18…

Yeah, but that's a logical, pragmatic solution that actually looks at the cost-benefit from a scientifically informed perspective. Most (or at least half) of America would hate it.

Re: U.S. physicists rally around plan to build fusion power plant

#180

Earlier quoted context omitted.

Fission is a solved engineering and science problem though and we’re still blocking it to let the sea levels rise. Point being, nobody actually cares about climate change enough to make hard decisions so a Manhattan style project is highly unlikely.

Is there a way to make people care? Personally, I think, for United States it does make perfect sense to redirect, say, half of the military budget onto solving real homeland security issues: climate change, sustainability, ecology, pandemics. There might be enough budget there to address climate change [1]. It'd be a risk to spend less on military, but considering that the United States has nuclear weapons and allie…

The real risk is politicians not getting their kickbacks from defense suppliers, sadly. The military industrial complex that Eisenhower warned us about has a death-grip on the congressional budget, even against the wishes of Pentagon leaders.
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