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Author Topic: How can nanoparticles turn sunlight into steam?  (Read 2295 times)

Offline thedoc

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How can nanoparticles turn sunlight into steam?
« on: 26/02/2013 13:29:02 »
Scientists have managed to make steam directly from ice-water using the power of the Sun...

Read the whole story on our website by clicking here

  
« Last Edit: 26/02/2013 13:29:02 by _system »


 

Offline yor_on

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Re: How can nanoparticles turn sunlight into steam?
« Reply #1 on: 01/12/2012 01:05:25 »
Very interesting. Could you use it for steam driven engines as maybe a locomotive? Like having some encapsulated 'see through box filled with water and those particles. It would be a very 'green' energy it seems?
 

Offline Phractality

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Re: How can nanoparticles turn sunlight into steam?
« Reply #2 on: 01/12/2012 21:39:45 »
Very interesting. Could you use it for steam driven engines as maybe a locomotive? Like having some encapsulated 'see through box filled with water and those particles. It would be a very 'green' energy it seems?
According to the article, the method makes use of about 24% of the available solar energy. That is slightly more efficient than the best photovoltaic cells. However, it is much easier to transfer electric power from a source to the motor than to transfer steam to an engine.
Imagine a train with 1000 square meters of photovoltaics on top of its cars. They could send about 200 kilowatts to the engine. A typical electric locomotive is rated around 5000 kilowatts.
Imagine a train with 1000 square meters of steam panels on top of its cars. They could generate about 240 kilowatts of steam power, but much of that would be lost as the steam is piped to the engine. Besides, steam engines are less efficient than electric or Deisel.
A solar powered train would be very slow; it would just be in the way of much faster trains.
 

Offline yor_on

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Re: How can nanoparticles turn sunlight into steam?
« Reply #3 on: 02/12/2012 16:34:29 »
Yeah, guess you're right Phractality, but it took my imagination away. It would be a good good thing if we found ways to use nano technology for macroscopic endeavors. I have a really interesting link, if I now can find it?

Yep http://theconversation.edu.au/show-us-your-carbon-nanotube-artificial-muscles-3821 (2011)
And..  http://theconversation.edu.au/power-to-you-carbon-nanotube-muscles-are-going-strong-10747 (2012)

Wonder what you could do with this concept?
=

If we now will find the time to develop it?
(Seems too many still are putting their heads in the sand when it comes to Global warming.)
« Last Edit: 02/12/2012 16:38:08 by yor_on »
 

Offline Bored chemist

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Re: How can nanoparticles turn sunlight into steam?
« Reply #4 on: 02/12/2012 19:34:36 »
Put the "steam panels" along the track, Get the steam to feed a turbine and make electricity. Use that to run the train.

Even a reasonably efficient way of making steam is a useful thing it it avoids using non renewable energy.
 

Offline yor_on

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Re: How can nanoparticles turn sunlight into steam?
« Reply #5 on: 03/12/2012 03:43:26 »
Sweet thinking BC, wonder how thick a layer of 'particles in water' need to be for optimum efficiency, utilizing the effect? And also if it is doable with a plastic material? Maybe one could make it as a sort of plastic carpet? And how to keep the water clear?
 

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Re: How can nanoparticles turn sunlight into steam?
« Reply #5 on: 03/12/2012 03:43:26 »

 

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