On Mon, Dec 26, 2011 at 12:22 PM, Stephen A. Lawrence <[email protected]>wrote:
> > > On 11-12-26 02:57 PM, Mary Yugo wrote: > >> >> Try responding to a real argument: if the claim, as Aussie Guy made it, >> is for a device with a COP of 5 over an input measured in watts, then why >> not close the loop? What COP would you need? 10? 100? what? >> Defkalion, by the way, claims 35x. >> > > As I said elsewhere, it depends on the temperature rise in the cell caused > by the PF effect. Depending on how hot the cell operates, a reasonable > estimate might be a COP of 30 to make it theoretically possible to close > the loop. That's based on a guess that the PF effect warms the cell by 10 > degrees C. > > In practice the requirement to close the loop with a wet CF cell is likely > to be more stringent than that. > I understand but, not to drive this into the ground, why is it necessarily so? Is there nothing you can do to such a cell to get a higher delta T? Larger electrodes? More current? Less coolant flow? Obviously I don't know -- just throwing out some guesses.
