Future Energy Usage - Politics Forum.org | PoFo

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The solving of mankind’s problems and abolition of government via technological solutions alone.

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By Khalq
#13415909
I'd say the Sun, using an Earth-based global network of solar panels. For now and the near future.
Space-based solar panels and/or panels on the moon surface would be much better.

We have free energy above our heads for the next 1 billion years. And by then we'll (hopefully) be posthuman cyborgs exploring and colonizing other systems and exploiting other stars.
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By MB.
#13416402
Who is going to build the planet-wide solar energy array you envision? What about all the other mineral and resource intensive industry on the earth (logging, fishing, farming, mining, manufacturing, oil consumption, etc etc)
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By Thunderhawk
#13418107
A switch to biological tools may mitigate some energy needs. We use various bugs for one stage of water treatment and there are some passive systems, though physically large, for later treatment phases that require very little energy too. There are methane capture landfills. Bugs that eat oil (useful for spills). Bugs that create some polymers. Some of these bugs have to be fed and otherwise taken care of, but they have less intense energy and effort needs.

New technology could reduce energy usage and losses. How many amps would photonic circuitry need compared to current electrical circuitry? How much energy would be saved by room temperature superconductors?

LEED is one green design protocol and its being updated and expanded. Sustainability is a buzzword for many, but in some circles it is a fundamental concept right along with cost and durability (functional lifetime) and its creeping in to such things as requirements in government contracts. Passive heating, cooling and venting is gaining more attention and is being (re)introduced into building designs.

Photothermal and Geothermal development (latter had an upset in Europe) has a great deal of promise.



A society greatly valuing and appreciating technology (rather then taking it for granted) would probably recognize, and thus hopefully adapt to and adopt better energy usage and conservation methods.
By Khalq
#13418581
"Harnessing the sun's energy falling on just 6,000 square kilometers of desert in North Africa would supply energy equivalent to the entire oil production of the Middle East of 9 billion barrels a year. [...] Solar thermal power plants could supply 68 percent of North Africa's as well as Europe's electricity by 2050." (source). I think this project has been mentioned in a thread here a few months ago and this is what I have in mind... for the entire planet.
With the amount of energy provided by a planet-wide network, we could stop our oil/gas consumption entirely. Housing units, cars, public transportation, factories, farming vehicles, probably boats and possibly even airplanes in the future (when we'll have more efficient solar panels) could be powered with clean, safe and renewable energy.
For instance, there are projects for electric car grid infrastructures in Denmark and Israel. Hook that grid to a renewable energy source and you'll have sustainable transportation. But as you can expect, profits and the business side of things always prevail.
Here's an example of a primitive solar-powered plane and here's one of a catamaran.

No one says we can't also use other types of renewable energy such as the wind, underwater currents, tidal flows, hydropower, etc.
Sooner (hopefully) or later we will be forced to take measures and probably make sacrifices in our society for such projects to be completed successfully.

We should also focus on recycling. The amount of waste generated in every single industry and by households is huge regarding energy consumption, destruction of natural resources and the environment and discarding of perfectly functioning products.
Companies are irresponsible but you can't blame them since their only goal is to make the most profits possible (corporate social responsibility is only a PR buzzword). And "consumers" are just as irresponsible but you can't blame them because they're encouraged to perpetuate the system of insane consumption by companies and governments.
A change of political and economic systems will be inevitable if humanity hopes to survive.

Another area where you can notice the irresponsibility is fishing. Maybe when commercially overexploited species are eradicated for good, companies and "consumers" will regret it but it'll be too late and they'll just kiss their dear profits/culinary customs goodbye.

As for the efficiency of farming, it could be enhanced using vertical farming for example.
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By Meslocusist
#13428362
I also think that Nuclear Fission can play a large part in electrical energy generation in the future. The fact is, it's the cheapest form of long-term sustainable energy. At the moment, solar is only cost-effective when it receives heavy government subsidies. Meanwhile, solar panels tend to be less "green" than generally thought because of the fact that they need to be doped with heavy and toxic metals, including arsenic, cadmium, selenium, gallium, etc. Many of these metals are also very rare and have a possibility of running out.

Solar thermal is a much better proposition. It requires very simple technology (parabolic support structure, something shiny, and some sort of heat engine like a steam engine or a stirling engine). These could be made just about anywhere, and for a fairly low price. Ultimately with solar thermal v. nuclear it depends on the economics of each.

To elaborate on why I like nuclear: Nuclear is a nearly limitless source of energy that uses simple technologies that exist today. It generates power cheaply, reliably, and safely. The radiation released into the environment by a nuclear power plant is actually less than the radiation released by a coal plant, by about an order of magnitude. The radiation fear in general is very much overstated- the only really radioactive areas of a nuclear plant is the Uranium in the core and the areas immediately outside of it. The rest is "radioactive" in a very low sense. Not much more so than natural Uranium, and natural uranium is not significantly more dangerous than lead- well, it's chemically rather reactive, but I don't see why anyone would be dealing with a block of chemically pure Uranium not in oxide form.

The only serious nuclear incident relating to power in the entire history of nuclear reactors is Chernobyl. Quite literally, they did everything wrong. Everything. Any one of dozens of things (Including staffing the plant with coal plant operators, taking out every single one of the control rods, designing a reactor in such a way as if it got a little hotter it would get a lot hotter (Called a positive void coefficient), and many other things) that, if even one were fixed, would make the blowout not happen. A concrete containment building, like the ones that have been standard in US reactors since the 50's, would have reduced radiation in the surrounding areas to approximately zero.

Today, they have almost been universally fixed. I'm sure there are plenty of regulations specifying who can work in the control room of a nuclear power plant (and if there aren't, there would be in a technocratic society). Reactors are designed with a negative void coefficient, which basically means that a Chernobyl-style meltdown is impossible. There are always many ways to scram a nuclear reactor, and the coming Generation IV, IV+, and V nuclear reactors promise increased safety, as well as the ability to act as both breeder reactors to turn Thorium-232 into fissile Uranium, in the case of the Molten Salt Reactor, a design I particularly like.

Needless to say, I like nuclear power. But solar thermal is perfectly workable too, and in the future both will probably be used.
By Zerogouki
#13481417
How many amps would photonic circuitry need compared to current electrical circuitry? How much energy would be saved by room temperature superconductors?


How much energy could we save if we had a magical genie who granted us wishes?

Harnessing the sun's energy falling on just 6,000 square kilometers of desert in North Africa would supply energy equivalent to the entire oil production of the Middle East of 9 billion barrels a year. [...]


And it would cost over eleventy bajillion dollars to do that.
By Khalq
#13481467
Zerogouki wrote:And it would cost over eleventy bajillion dollars to do that.

IDEA: Maybe the US can implement such a system so that it can stop polluting the planet and grinding multi-bajillion dollars, tons of foreign civilians and a bunch of its own citizens for its energy wars.
If you want to spend resources (and not money actually) anyway, why not spend them on something clean, useful, sustainable and peaceful.

Oh, and many things cost bajillions, starting with the support of our human civilization. So let us stop doing all of these costly superficialities and return to our caves. Ug omba omba uh!
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