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Author Topic: Can we use cold to generate electricity?  (Read 12499 times)

Offline thedoc

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Can we use cold to generate electricity?
« on: 09/04/2013 14:30:02 »
Rajuduttaroing asked the Naked Scientists:
   
I am always curious about the sources of energy.  The one question that struck my mind is can we use cold in a way we use other sources of energy in a mega scale. I want to give and starting idea for it from my side which can further be improved. The answer I would suggest is ,we can put many small closed bottles having filled with water and connected together to a machine at somewhat deep of the glaciers (we know that volume of water increases on cooling and thus pressurise the water filled containers on cooling)so, due to regular movement ,melting and formation of glaciers ,there will be motion in the closed water bottles ( made of convenient and most appropriate material ) we will use this motion in order to generate electricity.

What do you think?
« Last Edit: 09/04/2013 14:30:02 by _system »


 

Offline chris

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Re: Can we use cold to generate electricity?
« Reply #1 on: 09/04/2013 20:16:11 »
We interviewed the team from "Isentropic" a little while ago; they are using thermal gradients to turn gravel beds into energy sponges:

http://www.thenakedscientists.com/HTML/content/interviews/interview/1501/
 

Offline syhprum

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Re: Can we use cold to generate electricity?
« Reply #2 on: 09/04/2013 22:10:49 »
Anywhere there is a source of heat and a cold sink power can be generated with a heat engine, in the early part of the twentieth century ships were used as power stations using cold water pumped from deep in the ocean as the cold sink and the surrounding warm tropical sea as the source of heat.
 
http://en.wikipedia.org/wiki/Solar_pond

Here is a more modern application of the principle
« Last Edit: 09/04/2013 22:17:00 by syhprum »
 

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Re: Can we use cold to generate electricity?
« Reply #2 on: 09/04/2013 22:10:49 »

 

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