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A Spark of Hope for Fusion

Continued from page 1

By Kevin Bullis

Tuesday, May 01, 2007

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But with the new device, the researchers expect to be able to deliver more electricity than the Z machine can, increasing the temperature in a fuel pellet and causing more fusion to occur--potentially producing an explosion with significantly more energy than it takes to start the reaction. The device could also make it possible to ignite a fuel pellet every 10 seconds, providing a continuous supply of heat to make steam and drive a generator.

To create this amount of fusion, the researchers will need to build many of these devices, linking them together to form modules, several of which would themselves be arranged around a central point, where the fuel pellet could be dropped and ignited. Such a system would deliver in an extremely short burst far more power than is created by all the power plants in the United States.

Still, don't expect the Sandia technology to head to commercialization anytime soon. Even if money were no object, it could take 30 years to build a system, says Keith Matzen, director of pulsed power projects at Sandia.

Others think the engineering challenges involved in harnessing rapid series of large explosions are likely to prove just too difficult. With the new device, says Ian Hutchinson, professor of nuclear science and engineering at MIT, the Sandia and Tomsk researchers have scaled a 500-foot hill. The work they've yet to do is the equivalent of a 25,000-foot mountain. Several other researchers concur, noting that the Sandia researchers must also demonstrate that the system can produce the levels of fusion that their models predict.

Comments

  • Only 20 years away, as it has been for over 60 years
    Add to the extremes of explosions and confinement the incredible destructive power of 14 MeV neutrons, and we end up with currently intractable engineering problems. What can be done will be done, and we will have fusion power, but only the most optimistic suppose it will happen in only a few decades.
    Rate this comment: 12345

    lschuber
    05/01/2007
    Posts:13
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    • Re: Only 20 years away, as it has been for over 60 years
      How convient that no one seems to be interested in the work of Dr. Bussard in Re: electrostatic inertial confinement, via the Polywell reactor. I have seen nothing on this device in the popular media since Dr. Bussards speech at Google last year.
      If his WB 7 and WB 8 test reactors work as he has predicted, practical controlled fusion will be a LOT closer than 20 years.

      (Does the phrase "media conspiracy of silence" ring any bells?)

      GAry 7
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      gary7
      05/01/2007
      Posts:15
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      • Re: Only 20 years away, as it has been for over 60 years

        What a colossal waste of resources it is to develop another fusion reactor when we have one well situated and ready to be put to use--the Sun.  Why re-invent the wheel and than try to build something that can use that wheel. We already have the wheel. We only need to make use of it--the Sun.
        The problem is not energy generation but rather energy utilization. The Sun provides earth with more than enough potential energy for our use today and in the foreseeable future with the cost being only the price of converting the solar energy into usable energy be it electrical, mechanical, thermal etc.
        At the same time, the use of the solar energy would contribute to a reduction in the Sun's heating of Earth.
        Once the fusion reactor is "perfected" by these lab rats, there will still be the present problem of converting the nuclear energy.
        If the trillions being invested and to be invested in developing a fusion reactor were spent to build devices to convert the solar energy, fossil fuel utilization would sink like the Titanic. 
        Rate this comment: 12345

        garygromet
        05/01/2007
        Posts:10
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        • Re: The sun can't do it alone
          The Sun is not a constant source of power.  It disappears regularly at night and sometimes during the day.  Solar power is definitely one valuable leg of our future energy independence.  But, right now there are no practical ways to store its power. 

          The sun is also relatively low density power, meaning even at double the current conversion efficiency, we would need to cover most of the land near population centers on Earth with solar cells/wind turbines/thermal collectors to meet our energy needs.

          Fusion power research is money well spent, even when we end up spending trillions on it.  Right now its probably closer to 100 billion.  The supporting technologies drive basic scientific research that will improve lives in the coming decades.  And as physics understanding progresses over centuries, we will need sources of fuel orders of magnitude larger than what the sun provides.
          Rate this comment: 12345

          colinnwn
          05/02/2007
          Posts:39
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          • Re: The sun can't do it alone w/ present tech
            You are right that the Sun cannot do it alone; we have to produce more efficient energy collector, which we will need even for fusion reactor built here on earth.
            In the future, the distribution of electricity will take place  on a world wide power grid making sunsets irrelevant.
            Your statement "we would need to cover most of the land near population centers on Earth with solar cells/wind turbines/thermal collectors to meet our energy needs" reminds me of Malthus forecasting mankind starving from overpopulation.
            Rate this comment: 12345

            garygromet
            05/15/2007
            Posts:10
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            • Re: The sun can't do it alone w/ present tech
              kind of obvious... hot air baloons or somthing like that siting right above the jet stream with wind mils undrneath to colect wind and solar panels on top... just have to focus our money and resources on making better solar panels and some kind of superstrong wire that is also a good conductor and we got enough energy assuming we don't need helium or watevr for somthing else
              Rate this comment: 12345

              cretin001
              09/21/2007
              Posts:35
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            • Re:Malthus
              Failed to take into account advancements in technology. But the capacity to improve physical processes through technology isn't unlimited. There is a reasonable limit to how quickly food can grow. So Malthus was just ahead of his time.

              With energy collection there is a hard limit to how much we can harvest from the environment. Right now we are capturing 10-30% from solar cells and wind turbines. But we know the energy density in sunlight and wind. Even if we were to approach 100% efficiency collecting it, we would still require massive amounts of land to meet our energy needs.
              Rate this comment: 12345

              colinnwn
              02/20/2009
              Posts:39
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      • Re: Only 20 years away, as it has been for over 60 years
        Actually, about 2-10, depending on what you count. Distinct from the approaches mentioned above, though with family resemblances to Bussard's work, the Focus Fusion group ( http://focusfusion.org ) has just received enough current and ongoing funding to do a couple of year's intensive work (about as much as a toroidal research group would spend in a few hours, $1.2 million) which should have a proof-of-concept reactor doing better than break-even with micro-burst pB11 (proton-Boron11) reactions (at about 330/sec., within a hollow anode cylinder smaller than your thumb). With its shielding and electrical housing, etc., the whole rig will be about the size of a home garage, and output about 5MW continuously, with a few days down time once or twice a year for servicing and re-fueling. No waste or stray radiation or radioactive components generated, and output should be nicely profitable at about ¼¢/kwh.

        Within 10 years, licensed factories should be turning out thousands of generators on every continent, to be trucked and installed wherever desired.

        The consequences will be electrifying. World-wide. Long before your toddler finishes high school, or maybe even grade school.
        Rate this comment: 12345

        Brian H
        12/26/2008
        Posts:28
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    • Re: Only 20 years away, as it has been for over 60 years

      What a colossal waste of resources it is to develop another fusion reactor when we have one well situated and ready to be put to use--the Sun.  Why re-invent the wheel and than try to build something that can use that wheel. We already have the wheel. We only need to make use of it--the Sun.
      The problem is not energy generation but rather energy utilization. The Sun provides earth with more than enough potential energy for our use today and in the foreseeable future with the cost being only the price of converting the solar energy into usable energy be it electrical, mechanical, thermal etc.
      At the same time, the use of the solar energy would contribute to a reduction in the Sun's heating of Earth.
      Once the fusion reactor is "perfected" by these lab rats, there will still be the present problem of converting the nuclear energy.
      If the trillions being invested and to be invested in developing a fusion reactor were spent to build devices to convert the solar energy, fossil fuel utilization would sink like the Titanic. 
      Rate this comment: 12345

      garygromet
      05/01/2007
      Posts:10
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    • No Fusion?  No future for you!
      Thing is,
      if we don't perfect fusion, particularly H -> C fusion, we will eventually "fail" as a "dominating" species, e.g., no off-planet expansionist role. 

      We have a limited window to achieve fusion.  As we run through the last of the reduced carbon and fission isotopes, the mis-match between what solar based conversion (bio, PV, wind, hydro) can generate, and what it takes to support a civilization capable of engineering fusion will become apparent w/in the next 50-250 years, resulting in a huge downsizing of population and probably civilizational complexity.  That scenario leads to an eventual role as a "niche" species that now has no "cheap" power source to re-rise above agrarian complexity.  Doomed forever (happily, but stupidly, truly Green).

      On the other hand, figure out Hot Star fusion, we can mine the outer planets for H, use it to produce C (usable for biological expansion), and have the power (and civilizational complexity) to begin to populate our quadrant of the galaxy.

      What future do you want?

      Dr. Orbis
      Rate this comment: 12345

      Dr. Orbis
      05/01/2007
      Posts:7
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      • Re: No Fusion?  No future for you!
        And one truly wonders why an all-out, Manhattan-Project like effort is not already being funded. The ITER project is more than 10 years away from something that sort of resembles a viable model for a commercial reactor. What the US should do is start pumping tens of billions every year into our own crash fusion program  – NOW. Then we can license it to ITER after we pass them up.

        Another alternative is make this into an “X-Prize” project. Offer 100 billion to the first team that creates a system that can sustain and do N% above breakeven.
        Rate this comment: 12345

        Norfintork
        07/26/2007
        Posts:1
      • Re: No Fusion?  No future for you!
        Dr. Orbis

        You have it right!  Now can we convince our leaders that we need fusion?  We should follow Sir David King's advice given in the NEW SCIENTIST April 10, 2004 "Fast Forward to Fusion"

        In the book “The World is Flat” Tom Friedman asks for a vigorous plan to counter global warming.  He suggests the Apollo moon landing program as the model for an energy development program.

        This note is to alert you to the publication of my book “Global Warming Can Be Conquered” (ISBN 07 414 426 8 X). This book answers Mr. Friedman’s request. 

        In the book I justify the need for, and outline an ambitious plan for a new energy infrastructure called the Renewable-Fusion-Hydrogen (RFH) Energy System.  This system offers TOTAL elimination of the emission of fossil carbon by 2050. It is NOT the 80% reduction by 2050, currently under discussion.  The 80% reduction in carbon dioxide may slow warming but is inadequate to protect the biosphere for more than a few decades.  RFH Energy System has the potential to push critical warming off for several centuries and in the interim provides all nations with energy independence.   

        My goal is to develop world wide interest in implementing the RFH Energy System.  If you think the RFH Energy System makes sense please help me promote it by encouraging everyone you know to support its implementation. You can help by simply forward this note to everyone on your contact list, or if you buy the book lend it to others. 

        We must commence dramatic reduction in the emission of carbon dioxide within the next few years.  If you have an alternate plan, promote it and if it is better than RFH energy I will help promote your system.  We need to act! 

        You can review a brief outline of the system on my web site at:

        www.endtoglobalwarming.com

        You can send me a note at my e-mail address lowilliams@msn.com 

        or place one on my blog at:

        http://energyindependence.home.services.spaces.live.com/default.aspx

        You can buy the book “Global Warming Can Be Conquered” (ISBN 07 414 426 8 X) from the publisher for $19.95 at: www.bbotw.com 

        Rate this comment: 12345

        lowilliams
        01/18/2008
        Posts:17
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    • Re: Only 20 years away, as it has been for over 60 years
      Your comment is footle.  Mankind has wanted to fly like a bird since ancient times.  It took 8000 years from the first villages for humanity to compile enough knowledge to produce the Wright Brothers.  If we approach the fusion challenge with the vigor we attached to the Apollo Moon Landing I think we could have a utility, widely reproducible fusion reactor in 10 years.  Look at www.endtoglobalwarming.com or read the book "Global Warming Can Be Conquered". It can be obtained at www.bbotw.com
      Rate this comment: 12345

      lowilliams
      01/18/2008
      Posts:17
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  • More like a spark of stupidity

    What a colossal waste of resources it is to develop another fusion reactor when we have one well situated and ready to be put to use--the Sun.  Why re-invent the wheel and than try to build something that can use that wheel. We already have the wheel. We only need to make use of it--the Sun.
    The problem is not energy generation but rather energy utilization. The Sun provides earth with more than enough potential energy for our use today and in the foreseeable future with the cost being only the price of converting the solar energy into usable energy be it electrical, mechanical, thermal etc.
    At the same time, the use of the solar energy would contribute to a reduction in the Sun's heating of Earth.
    Once the fusion reactor is "perfected" by these lab rats, there will still be the present problem of converting the nuclear energy.
    If the trillions being invested and to be invested in developing a fusion reactor were spent to build devices to convert the solar energy, fossil fuel utilization would sink like the Titanic. 
    Rate this comment: 12345

    garygromet
    05/01/2007
    Posts:10
    Avg Rating:
    4/5
  • What do you think about the Bussard's fusion-reactor research?
    .

    What do you think about the Bussard's fusion-reactor research?

    may it work? (and soon?)

    could it (really) give us CHEAP and SAFE energy?

    these are two (of the many) links you can find (googling) about this concept:

    http://www.geocities.com/~dmdelaney/Bussard/bussard-fusion-reactor.html

    http://www.ibiblio.org/lunar/school/InterStellar/Explorer_Class/Bussard_Fusion_systems.HTML

    .
    Rate this comment: 12345

    Gaetano Mara...
    05/01/2007
    Posts:114
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    • Re: What do you think about the Bussard's fusion-reactor research?
      Might it work... sure.  Is it likely to produce economically viable power anytime sooner than ITER... probably not.  Coming up with ideas for fusion aren't that hard, as in the original Farnsworth bench top unit.  It's as simple as heating up a bunch of hydrogen to a really hot temperature... the devil is in the details.  It seems as if Bussard has not progressed too far down the path of discovering the details.  Seems like he still needs work on confinement.  Then there is the issue of getting fuel into the system and heat out.  Last and certainly not least is the issue of high energy neutron bombardment of the entire apparatus.  This latter aspect is a huge, hundreds of millions or billion dollar, research endeavor as part of Iter to come up with metals that can withstand that sort of abuse.
      Rate this comment: 12345

      rhapsodyingl...
      05/01/2007
      Posts:55
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      • Re: What do you think about the Bussard's fusion-reactor research?
        What if Bussard daisy chained his electrostatic confinement units? Then, he could attach secondary magnetic bubbles as exhaust valves to each section in the chain. These exhaust valves, if opened and shut quickly enough, can allow enough energy to escape for heating water, but not so much that you melt the hardware or blow the whole compund into the sky. Having a greater number of valves increases the ammount of energy you can harvest from an individual reaction, boosting effiecieny. Also, by dissipating energy this way, you are pacing the rate of energy buildup at the same time that you are harvesting the energy, thus reducing the the average ammount of energy required for containment at the end of the cycle.

        Next, if you use the pulse fusion technology described in this article to generate the reactions, you gain an extra ammount of control over the system. This part of the process will allow you to pace the initial energy generation. And, since both technolgies are dependent on electricity, you can connect both elements in serial. By doing that, when an electrostatic confinement bubble in the chain fails, the circuit is broken and the pulse-generated fusion reactions discontinue immediately. Of course, if the bubble failed during a reaction, which is the most likely case, you might not have a power plant any more....

        I'm sure that leakage flaws in the bubbles would be a serious problem, too. You would have to do some very rigourous quality testing on every production unit before using it to build a reactor. That could be done done with much weaker radient energy sources, than actual fusion, though.
        Rate this comment: 12345

        zippo
        05/01/2007
        Posts:24
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      • Re: What do you think about the Bussard's fusion-reactor research?
        It sounds like you haven't read any of the material available on IEC fusion. First,in reality fusion has nothing to do with temperature. Fusion cross section curves top out at high velocities--Monstrosities like ITER, which use temperature to increase average particle velocity to the highest part of the cross section curve, do indeed have confinement problems with hot, neutral plasma.

        The whole point of IEC is limiting the majority of the plasma to a highly charged cloud of electrons in the center (acting as a virtual anode). Then you get the fuel particles  (a minority of the plasma) to the required velocities by electrostatic acceleration from the virtual anode. There's much less problem confining electrons with a magnetic field than a neutral plasma.
        Rate this comment: 12345

        tom.cuddihy
        05/02/2007
        Posts:2
        • Re: What do you think about the Bussard's fusion-reactor research?
          I should add something about the other two objections you raise: fuel and neutrons
          -fuel addition just happens as neutral gas injection. This is easy and standard for D-D. Once the fuel is ionized, electrostatic forces accelerate it to the center and hopefully to fusion velocities.
          -fusion product removal is a concern if you don't want them reacting as well, that depends on the fuel
          -neutrons are a concern for any fusion system, except the neutron-free reactions, like p-B11. This is the part that really makes me think you didn't read the Bussard material, because he covers the aneutronic rxns, and why IEC is the likely the only ones with a chance of doing it.
          Rate this comment: 12345

          tom.cuddihy
          05/02/2007
          Posts:2
          • Re: What do you think about the Bussard's fusion-reactor research?
            I really hope someone is taking notes, cause if the government paid attention to sites like this and acted on the advice, we would solve all the world's problems in no time. what we need is a huge online chatroom where only people who have at least finished high school can talk, and have the subject be some problem with technology or the world. Its like 2 heads are better than 1, just multiplied a couple thousand times.
            Rate this comment: 12345

            cretin001
            09/22/2007
            Posts:35
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  • Worth of Research
    To all the critics that imply this is a waste of money, I would ask you to think of a United States that didn't have the world's best universities and research facilities and many of the world's best physicists.

    Even if this project doesn't result in fusion energy, it (like space and defense research) is likely to produce knowledge that does yield practical applications.  However, even if that were not true, projects like these are what fund our basic physics research.  The money is also what creates the incentives for students to pursue physics.  Sure it's government subsidy, but it's a subsidy any government would have to make if they want to remain one of the technological leaders of the world.
    Rate this comment: 12345

    rhapsodyingl...
    05/01/2007
    Posts:55
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    • Re: Worth of Research
      You're absolutely right about that. Having a pie in the sky makes a man hungry.  :-)
      Rate this comment: 12345

      zippo
      05/01/2007
      Posts:24
      Avg Rating:
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      • Re: Worth of Research
        lschuber

        Explosions? Are you sure you are talking about nuclear BOMBS and not reactors?
        The whole point is to contain plasma and the products of the reactions.

        And we already use neutrons in fission reactors, and guess what, they work! They are trapped by water that turns to steam, that spins turbines that spins a generator that creates electric power. Also, advanced fuels will not have neutrons.

        gary7

        The reason why no one is really interested, is because Dr.Bussard didn't give the papers detailing his work. Without those, we have nothing but a few non-scientific (as in not going into the scientific details) papers hazy of details to base an opinion. Definitely not enough for the attention of scientific community or governments.
        It's not so much as media silence as "the dude is still working on it".

        And the paper isn't as surprising either, stuff like this take months to write, and Dr.Bussard has allot of data to work out.

        garygromet

        Photovoltics are only good as secondary power source. They can greatly cheapen the bills, but they are incapable of supplying the civilized world alone.

        And photovoltics may actually be the best option, others are increasingly more ineffective, which is bad considering that the top a photovoltic cell can archive is 40% (in laboratories mind you, not in commercial use).

        Beyond that, solar power is only continuous in space, while on Earth the 1/3 or more of its power is gone due to atmosphere. Solar cells are also very expensive and rather fragile.

        Oh, and Earth gets allot of sunlight, enough to power the world? Well only if you place solar panels all over the Earth's surface, including cities, farm fields and oceans. They take allot of space, space that can much more useful purposes, like farms of woods.

        The main problem with solar is that its a diffuse energy source, that and the fact that it has many practical problems.

        The only waste of money and time I see is trying to tap into an immensely diffuse energy source with ineffective tools at the expense of land, at a price that not even the most richest countries in the world can afford, to get a little energy that can be several times gained by a few grams of plutonium.

        Beyond that, repeating what you already said will make you more look stupid. Are you stupid?

        rhapsodyinglue

        Dr.Bussard is a nuclear physicist, over 60 years old, worked for various respected offices and companies in the USA, and he too worked on the Tokamak. If he doesn't know, then neither does the guys trying to run that white elephant called ITER.

        All the problems you mentioned are the problems of ITER, not z-pinch or IEC. Injecting fuel is the easy part, the parts necessary are in your cathode-ray-tube TV or monitor (if you still have one), which "heat up" the fuel more then enough, enough even for p-B11 fusion.

        And building the "metals" isn't the problem, its putting in enough lithium-6 and li-7 to cover the wall and generate tritium. Also, with more advanced fuels, neutrons won't be a problem (as there will be little to none neutrons to speak of).

        zippo

        If one condition of the fusion doesn't work, then there will be simply no fusion. If the reactor fails, then there is no fusions, just hot plasma, which is relatively easy to dispose of.
        If confinement fails, you'll get super-hot plasma that will burn the chamber walls, perhaps a bit more, but that's it. If there is a leakage then it will won't work in the first place or if there is a leakage midway, then the air will cool down the plasma. There might be a reactor fire, perhaps some radioactive elements that goes into the building's air, but the power plant won't blow up sky high (in fact, there is no nuclear reactor that could by the nuclear reaction alone, at Chernobyl it was the graphite reacting with water).

        This is a reactor, not a bomb. Know the difference.

        As for being hungry, well, I'm not the only one. Guess what we will run out, and what we will be forced to use? It's not berries and wine.


        Oh, and let me recommend this site: http://www.fusor.net/
        People are making fusion reactors in their basements and garages below 3000$.
        Rate this comment: 12345

        Zixinus
        05/03/2007
        Posts:1
  • A new device clears an obstacle to a type of fusion power plant
    Fusion is an important future energy source, but engineering problem and problem of converting the nuclear energy will make it difficult to come up with acceptable solution in the near future.
    Solar energy may be the plausible solution although the Sun is not a constant source of power.We just need to find a pratical ways to store its power and used it when needed.
    Billions invested in fusion research may be well spend in solar energy technology.
    Rate this comment: 12345

    jeam
    06/19/2007
    Posts:2
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  • A new device clears an obstacle to a type of fusion power plant
    Fusion is an important future energy source, but engineering problem and problem of converting the nuclear energy will make it difficult to come up with acceptable solution in the near future.
    Solar energy may be the plausible solution although the Sun is not a constant source of power.We just need to find a pratical ways to store its power and used it when needed.
    Billions invested in fusion research may be well spend in solar energy technology.

    Jeam
    Rate this comment: 12345

    Jean Mongu B...
    06/20/2007
    Posts:2
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  • Management of radioactive waste
    We need to assess the risk of management of radioactive waste by the multi-barrier system. Using knowledge of the chemical properties of the various radionuclides in spent fuel, let follows each of the important radionuclides as it travels through the many barriers placed in its path. It turns out that only two radionuclides are able to reach the biosphere, and they arrive at the earth’s surface only after many thousands of years. A careful analysis of the critical points of the disposal plan emphasizes site rejection criteria and other stages at which particular care must be taken, demonstrating how dangers can be anticipated and putting to rest the fear of nuclear fuel waste and its geological burial.
    Rate this comment: 12345

    jmongu
    08/01/2007
    Posts:5
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  • the energy harness solved
    If you looked at the electrical engineering department, the harnessing of the fusion reaction heat component was solved by dr.hagel...; I am not sure the spelling. His wisdom in cold fusion derived a more efficent way to convert heat into electricity.
    A semiconductor material thats magnitudes higher then thermocoupling systems. Its matter of economics now to get a sustainable heat generator to back up the sun's radiance.
    Rate this comment: 12345

    howitzer
    08/04/2007
    Posts:1
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