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New Scientist Article - Metal Power

 
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newmac
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Joined: 24 Nov 2005
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Location: Kennington, London

PostPosted: Thu Oct 20, 2005 11:44 am    Post subject: New Scientist Article - Metal Power Reply with quote

I haven't read it yet but there is an article in the New Scientist just come out that talks about fine powdered metals (aluminium, iron, steel) in car engines as the fuel of the future.

Questions I have before I read it are:
- energy to grind the metal
- energy to extract (although they say you can just use scrap yards I think)
- where does the hydrogen to process the used fuel come from

http://www.newscientist.com
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DamianB
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Location: Dorset

PostPosted: Thu Oct 20, 2005 12:12 pm    Post subject: Re: New Scientist Article - Metal Power Reply with quote

newmac wrote:
I haven't read it yet


Great stuff Chris Laughing

To continue reading this article, subscribe to New Scientist. Get 4 issues of New Scientist magazine and instant access to all online content for only ?2.95

Even better! Laughing
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GD



Joined: 24 Nov 2005
Posts: 1100
Location: Devon

PostPosted: Thu Oct 20, 2005 12:31 pm    Post subject: Reply with quote

You also need to think about electrolysis, which is very energy intense.
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MacG



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Posts: 2866
Location: Scandinavia

PostPosted: Thu Oct 20, 2005 2:45 pm    Post subject: Reply with quote

Sound like a terribly bad idea!

OK, energy has been put into metals when reducing them from their natural oxidised forms (except the noble metals). In the case of iron, it is usually "energized" by coal or sometimes electricity. That energy could be extracted by oxidizing the metals, but overall efficiency would be terrible and we would disperse a lot of those metals to entropy in the process also.

Guess it's the thing to resort to when the very last tree has been cut down.
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