Re: Energy from the oceans
- From: Andy Baxter <news5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 22 Aug 2007 01:16:23 -0000
On Tue, 21 Aug 2007 20:58:53 +0100, Mogga wrote:
http://www.youtube.com/watch?v=x59MptHscxY
Is this a realistic idea?
It is possible, but not very efficient - the efficiency of a heat engine
depends on the ratio between the high temperature fluid going in and the
low temperature fluid going out. This is in degrees Kelvin - i.e. the temp
in degrees C plus 273. For this application, the relevant temperatures are
5 C (278K) and 25 C (298K) (from 'renewable energy' by godfrey boyle).
This gives an efficiency of 1-(278/298)=0.067, or around 7%.
This may not matter, as the fuel is free, but means that the engineering
needs to be done carefully to avoid wasting more energy pumping the fluid
(e.g. propane) round the system than is recovered in usable energy.
--
remove 'n-u-l-l' to email me.
.
- References:
- Energy from the oceans
- From: Mogga
- Energy from the oceans
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