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Science & Technology

New reactor uses sunlight to make fuel

By T.K. Randall
November 29, 2009 · Comment icon 6 comments

Image Credit: NASA
Scientists at Sandia National Labs have come up with a new reactor that sets of a thermo-chemical reaction in order to convert or "reverse-combust" CO2 back in to fuel using nothing but solar energy.
The device, boasting the simple title Counter-Rotating-Ring Receiver Reactor Recuperator (we'll go with "CR5") sets off a thermo-chemical reaction by exposing an iron-rich composite to concentrated solar heat. The composite sheds an oxygen molecule when heated and gets one back as it cools, and therein lies the eureka.


Source: Popular Science | Comments (6)




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Comment icon #1 Posted by magickaldan 16 years ago
Eureka This is nothing new lol, Just basic chemistry that's been around for eons and has no practicability. What we need is a organic way of stripping CO2 into C and O2, with the help of photosynthesis. Then collect the carbon for fuel, and release oxygen back into the air or use for breathing apparatus.
Comment icon #2 Posted by DieChecker 16 years ago
Here's another idea. Why don't we build facilities instead to directly convert sunlight to electricity and then use that electricity to power our homes, cars and other needs. Huh? Already available? Humm... Why waste time developing technology that adds steps and complexity and is way less efficient?
Comment icon #3 Posted by questionmark 16 years ago
Here's another idea. Why don't we build facilities instead to directly convert sunlight to electricity and then use that electricity to power our homes, cars and other needs. Huh? Already available? Humm... Why waste time developing technology that adds steps and complexity and is way less efficient? Because the problem to solve is not how to generate electricity from the sun's irradiation. That is well known and applicable. The problem is storing this energy to be used at night.
Comment icon #4 Posted by DieChecker 16 years ago
So is this supposed to just be a fancy heat storage cell? Seems using electricity to make fuel, like hydrogen and then burning that at night would be the way to go. Or, using orbital laser systems to move energy from the day side of the planet to the night side.
Comment icon #5 Posted by questionmark 16 years ago
So is this supposed to just be a fancy heat storage cell? Seems using electricity to make fuel, like hydrogen and then burning that at night would be the way to go. Or, using orbital laser systems to move energy from the day side of the planet to the night side. Ever heard about the problems of people living with the summer sun that does not go down?
Comment icon #6 Posted by odiesbsc 16 years ago
So is this supposed to just be a fancy heat storage cell? Seems using electricity to make fuel, like hydrogen and then burning that at night would be the way to go. Or, using orbital laser systems to move energy from the day side of the planet to the night side. I agree, I'm with you. It seems to me that all the brainiacs working on this should be able to come up with an alternate source for power. And maybe they have, and are suppressed, who knows? I think about it quite alot but I don't have the education to come up with an answer. I've come up with some ideas of my own but lack the time and... [More]


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