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Wikipedia
Space based materials processing
In the long term, the Moon is likely to be very important in supplying construction facilities with raw materials.[46] Zero gravity allows materials to be processed in ways impossible or difficult on Earth, such as 'foaming' metals, where a gas is injected into a molten metal, and then the metal is annealed slowly. On Earth, the gas bubbles rise and burst, but in a zero gravity environment, that does not happen. Annealing is a process that requires large amounts of energy, as a material is kept very hot for an extended period of time. This allows the molecular structure to align in the strongest possible way. Materials which cannot be alloyed or mixed on Earth because of the gravity field effects on density differences could be combined in space, resulting in composites which could have exceptional qualities. No one knows, because no one has been able to experiment along these lines on any scale. However, it is possible that a material or process will be identified which will be highly valuable on Earth, but impossible to make here.
Exporting material to the Earth
Exporting material to Earth in trade from the Moon is more problematic due to the high cost of transportation. One suggested candidate is Helium-3 from the solar wind, which has accumulated on the Moon's surface over billions of years, and which is rare on Earth. Helium is present in the lunar regolith in quantities of ten to a hundred (weight) parts per million, and 0.003 to 1 percent of this amount (depending on soil). 2006 market price for He3 was about $46,500 per troy ounce ($1500/gram, $1.5M/kg), more than 120 times the value per unit weight of Gold and over eight times the value of Rhodium.
In the long term future He3 may prove to be a desirable fuel in thermonuclear fusion reactors.
Gerald Kulcinski's group at the Fusion Technology Institute of the University of Wisconsin-Madison has operated an experimental He3 fusion reactor for an extended period, on a non-governmental research budget,[49] however the reactor has not achieved energy balance or breakeven.
John Roach
for National Geographic News
December 4, 2006
NASA plans to construct a solar-powered outpost at one the moon's poles, officials with the U.S. space agency announced today.
The lunar base is expected to be permanently staffed by 2024. The outpost concept was chosen over a competing strategy similar to the 1960s and '70s Apollo program—a series of brief trips to the moon.
The moon base will allow for sustained human presence on the moon's surface and help the agency prepare for future missions to Mars and beyond, explained NASA Deputy Administrator Shana Dale.
"It also enables global partnerships, allows for maturation of in situ resource utilization, and results in a path that is much quicker in terms of future exploration," Dale said at a press conference.
The announcement was part of NASA's congressionally mandated strategy to meet U.S. President George W. Bush's "Vision for U.S. Space Exploration," a plan outlined in 2004.
National Geographic
.................
Earlier this year, shortly after Russia claimed a vast portion of the Arctic sea floor, accelerating an international race for the natural resources as global warming opens polar access, China has announced plans to map "every inch" of the surface of the Moon and exploit the vast quantities of Helium-3 thought to lie buried in lunar rocks as part of its ambitious space-exploration program.
Ouyang Ziyuan, head of the first phase of lunar exploration, was quoted on government-sanctioned news site ChinaNews.com describing plans to collect three dimensional images of the Moon for future mining of Helium 3: "There are altogether 15 tons of helium-3 on Earth, while on the Moon, the total amount of Helium-3 can reach one to five million tons."
"Helium-3 is considered as a long-term, stable, safe, clean and cheap material for human beings to get nuclear energy through controllable nuclear fusion experiments," Ziyuan added. "If we human beings can finally use such energy material to generate electricity, then China might need 10 tons of helium-3 every year and in the world, about 100 tons of helium-3 will be needed every year."The harvesting of Helium-3 on the could start by 2025. Our lunar mining could be but a jumping off point for Helium 3 extraction from the atmospheres of our Solar System gas giants, Saturn and Jupiter.
Please visit the link provided for the complete story.
[edit on 7/4/2008 by jkrog08]
Let's get the funding to this man!Although I think he will get it in a few years when the US realizes China's going to get Helium 3 first if we don't jump on it first.Either way I think the funding will come in a few years when we get more detailed information about the exact amounts on the Moon.Either way I believe within 30 years oil will be near obsolete and the world will be running on Helium 3 mined from the Moon.Here is some more information I would like to share with you:
Professor Kulcinski's lab is running the only helium-3 fusion reactor in the world. He has an annual research budget that is barely into six figures and allows him to have five graduate research assistants working on the project. Compared to what has been spent on other fusion projects around the world, the team’s accomplishments are impressive. Helium-3 would not require a tokomak reactor like the multibillion-dollar one being developed for the international ITER project. Instead, his design uses an electrostatic field to contain the plasma instead of an electromagnetic field. His current reactor contains spherical plasma roughly ten centimeters in diameter. It can produce a sustained fusion with 200 million reactions per second producing about a milliwatt of power while consuming about a kilowatt of power to run the reactor. It is nuclear power without highly radioactive nuclear waste.
Asi.org
The Energy
That 1 million metric tonnes of He3, reacted with deuterium, would generate about 20,000 terrawatt-years of thermal energy. The units alone are awesome: a terrawatt-year is one trillion (10 to 12th power) watt-years. To put this into perspective, one 100-watt light bulb will use 100 watt-years of energy in one year.
That's about 10 times the energy we could get from mining all the fossil fuels on Earth, without the smog and acid rain. If we torched all our uranium in liquid metal fast breeder reactors, we could generate about half this much energy, and have some interesting times storing the waste.
The Value
About 25 tonnes of He3 would power the United States for 1 year at our current rate of energy consumption. To put it in perspective: that's about the weight of a fully loaded railroad box car, or a maximum Space Shuttle payload.
To assign an economic value, suppose we assume He3 would replace the fuels the United States currently buys to generate electricity. We still have all those power generating plants and distribution network, so we can't use how much we pay for electricity. As a replacement for that fuel, that 25-tonne load of He3 would worth on the order of $75 billion today, or $3 billion per tonne.
The Payoff
A guess is the best we can do. Let's suppose that by the time we're slinging tanks of He3 off the moon, the world-wide demand is 100 tonnes of the stuff a year, and people are happy to pay $3 billion per tonne. That gives us gross revenues of $300 billion a year.
Peakoil..
Imagine a world thirty years from now. NASA has led the way to returning humans to the Moon and is in the final steps of preparing for human exploration and settlement of Mars. On Earth our environment is cleaner with reliable fusion reactors steadily replacing coal-fired plants and fission reactors. The fuel for these reactors is being mined from the surface of the Moon relegating the mercury, radium and carbon dioxide-laced exhaust from coal-fired plants to "the ash heap of history". The growth of highly radioactive waste from fission power plants is following coal into history. Dependency on highly volatile regions of our planet for energy supplies is steadily diminishing. Clean power is allowing economic development of the world to continue, lifting a higher and higher percentage of the population out of poverty. Is this a possible future for our country and the planet? Professor Kulcinski and his small team of researchers just might have the answer and NASA might provide access to the key enabling resource.
Originally posted by NGC2736
The question, as always is what percentage of the average person's income will this take? Transportation costs will be expensive, yet the return would seem to make it cheaper than oil, in the long run.
Good post with a lot of info. Good job.
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originally posted by: stormbringer1701...the prime benefit of Helium III fusion is it doesn't make neutrons or at least fast neutrons which means the reactor walls doesn't turn into nasty varieties of nuclear waste and don't break down due to embrittlement.
originally posted by: Saint Exupery
originally posted by: stormbringer1701...the prime benefit of Helium III fusion is it doesn't make neutrons or at least fast neutrons which means the reactor walls doesn't turn into nasty varieties of nuclear waste and don't break down due to embrittlement.
This is a crucial point that has been overlooked for too long. Proponents of conventional deuterium fusion have been touting it for decades as a waste-free energy source, but it is not. The entire torus and much of its structural support would become high-level waste within a decade or two. Although less radioactive than spent fission rods, we're talking many times more tons of contaminated material to dispose of (not to mention the expense of rebuilding the reactor).
If we ever want fusion to be practical or economical (the jury is still out on both points), Helium III is the way to go.