Alternate Energy

[BCPVP]

I'd like to see some "science" discussion in the SMP forum for a change, so I figured a little series on alternate energies might be interesting. The topic intrigues me even though I'm skeptical of many of the claims of global warming-types. I'm more interested in the efficiency aspects.

I'm looking for some fairly reliable discussion on alternate energies that's interesting to you. I know from doing a little investigating on my own that you have to be skeptical of most claims. I'm looking for any interesting sites, blogs, magazine articles, scientific papers, etc. Whadda ya got, SMP?

[m_the0ry]

With competitively priced solar cells on the horizon and many private corporations installing their own solar grids, I think it is safe to say this technology will be the winner as far as scalable power. The technology is improving in an almost Moore's-law-esqu fashion.

Now the issue will be portable energy and high density energy storage. The former will probably stick with LiIon batteries as the superior technology for at least a half decade more by my guesses.

As far as energy storage, I am almost certain that carbon nanotube flywheels will make an appearance in the next decade and they will dramatically change the landscape of the energy problem.

[Andy Ross]

Pretty sure Edison and Tesla fought this one out ages ago.

[Beesnuts]

Nanotechnology FTW. I've learned that people working with this have said they can create solar cells on a small enough scale that they could be "painted" onto the roof of your house for example, essentially turning your whole roof into a solar panel without all the complicate equipment. You can apply it to existing roofs and, boom, there ya go.

As far as the automotive industry goes, I've heard the next big step in the "Hybrid" transformation is to make cars that run solely off electric motors for up to 30-40miles. Something like 85% of car trips are less than 40miles. So, if you wanted to head out to the grocery store, you would do so on only eletric power, only once you crossed the ~40mi threshold, would the gasoline engine turn on.

Good ideas IMO

[Neuge]

There are a ton of fantastical ideas about alternative energy. The sad reality is that, at this point in time, none are within orders of magnitude of being as economical as fossil fuels. That's easily the first hurdle that must be overcome.

[kerowo]

It's a shame we didn't take that few hundred billion we've spent raising oil prices in the middle east and used it to develop space based solar power. Besides cheap power the biggest benefit would be the improvements in getting things into space that would be required for such a venture. Although if oil prices keep going up maybe someone will have the balls to suggest more nuclear plants and be able to get one past all the misguided protests from the left.

[BCPVP]

Good stuff so far. Any articles that have struck your fancy on these topics, guys? I sometimes check peswiki.com, though I feel as though I need to be skeptical of everything on there because it is a wiki-type site and some of the claims made can seem pretty over-the-top. I'm thinking articles from magazines like Popular Mechanics/Scientific American, etc.

On nuclear power, I believe that the US hasn't built any new nuclear plants in ~30 years, right? Have there been any developments as far as nuclear goes that would make it a more attractive option? I would think high cost to build a plant, potential for meltdown, and the problem of waste are some big hurdles to overcome.

[m_the0ry]

[ QUOTE ]
There are a ton of fantastical ideas about alternative energy. The sad reality is that, at this point in time, none are within orders of magnitude of being as economical as fossil fuels. That's easily the first hurdle that must be overcome.

[/ QUOTE ]

Not true, again competitively priced (watt/$) printable solar cells are entering the market. Investors are making the leap, and it will be a cascade effect from there on. I agree chemical fuels are hard to beat for energy density but this is only one branch in the giant energy tree.

Carbon nanotube flywheels can reach energy densities orders of magnitude larger than fossil fuels. In fact they are nearly unbounded with respect to energy density.

Fusion is, unfortunately, a pipedream.

[threeonefour]

[ QUOTE ]

As far as the automotive industry goes, I've heard the next big step in the "Hybrid" transformation is to make cars that run solely off electric motors for up to 30-40miles. Something like 85% of car trips are less than 40miles. So, if you wanted to head out to the grocery store, you would do so on only eletric power, only once you crossed the ~40mi threshold, would the gasoline engine turn on.

Good ideas IMO

[/ QUOTE ]

This does sound like a good idea, but its really dependent on how clean you can get electrical energy right? assuming you plug the car into the wall. if the car still has to use its alternator to charge the battery, then you probably are only making a marginal improvement right? i don't know much about cars so correct me if i am wrong.


anyway, in the pacific NW we have really clean (but arguably maintain a pretty big ecological impact) and cheap energy since we have damned up pretty much all of our major rivers. this isn't so practical for the rest of the world seemingly.

i think clean(er) nuclear power may be the solution. if you zap though uranium rods enough they just come out as lead right? the only problem is that a lot of the secondary equipment involved becomes radioactive, i am guessing there are technologies that could minimize that. or ways to legitimately get rid of the waste without storing it for 100,000 years.

[m_the0ry]

The overall goal is large scalability and long term sustainability. Uranium is far too rare to be a sustainable power solution.