In reply to Stephen A. Lawrence's message of Thu, 22 Dec 2005 22:39:04 -0500: Hi, [snip] >The numbers on this one sound fabulous: 600% excess heat sounds >stunning. Is this paper online? I didn't see it in the index, though >there appears to be other "superwave" stuff from El-Boher on your site >going back at least to ICCF-10. > >Anyone got any idea where "breakeven" is for a "typical" cold fusion >cell? (Yes, I know, they're all different, there is no "typical" >cell...) At what level of excess heat is total energy in likely to be >less than recoverable energy out? (For that matter, what's the right >way to even ask the question? It's pretty obvious what "breakeven" is >for hot fusion, but for CF it seems a bit less clear.) > >In other words, is 600% excess heat anywhere near "breakeven"? [snip] Clearly it depends on what you want to do, and the output temperature of the cell. At face value, 600% is clearly way above break even, however that's electrical energy in and thermal energy out. A reverse cycle heat exchanger can do nearly this well. If all you want do is create warm water, then this would probably be commercial right now. If you want to produce enough electricity to power the device itself, then you need to look at the Carnot efficiency of the device (TH-TL)/TH. Having determined the Carnot efficiency, you probably need to divide this by about a factor of 2 to get somewhere close to real conversion efficiency.
Regards, Robin van Spaandonk http://users.bigpond.net.au/rvanspaa/ Competition provides the motivation, Cooperation provides the means.
