On 18/10/2014 10:30 AM, John Berry wrote:
Did you read/understand Paul's analysis?
I didn't need to! Did you read/understand mine!?
This is impractical and maybe impossible unless he can improve efficiency.
Carnot conversion just isn't great enough to turn the heat into usable
electricity.
You don't need usable electricity to "make a self feeding Hot Cat and
end the controversy"!
On Sat, Oct 18, 2014 at 3:24 PM, <[email protected]
<mailto:[email protected]>> wrote:
I don't know why Rossi doesn't do this. I think he must hardly
have any ingenuity - or the scientists/engineers that are in a
position to advise him! (Or you could think of more insulting terms).
To convert the output heat to electricity, and then convert it
back to input heat would have to be the craziest approach
imaginable to use!
To feed the output heat back in as input heat all you need to do
is insulate the device. What could be easier than that!?
Then to stop it running away and melting down all you need to do
is pump water or blow gas through it to cool it down in a
controlled manner with a thermostatically controlled switch (which
could even be a passive device like the old thermostats used in
the cooling systems of auto-mobile engines). The cooling
necessary to prevent melt-down represents your output energy.
If you need some electrical "excitation" in addition to plain old
resistive heating, then this would be a very small component and
could easily be subtracted from the output energy to determine the
energy balance. But the fact that the system "runs away" if it is
allowed to get too hot - even after the "excitation" has been
turned off - proves that this "excitation" is not really required.
On 18/10/2014 7:32 AM, Paul Breed wrote:
Closing the loop with a hot side temperature of 1200C and a
COP of 3, is right on the very edge of possible...
You need close to 50% of theoretical carnot efficiency...
100C cold 1200C hot gives carnot of 0.76
Best possible heat to mechanical work.. (3*.76) = 2.28
Best possible Work to electricity 0.95
gives 2.116 so to break even close the loop and have ZERO
excess energy you would need to get to 46% of carnot
Commercial large scale power plants don't get to 46% of carnot....
Using something really simple like thermo electric (seebeck)
generator would require a COP of 20.2 to get to break even
assuming that electrical conversion efficency was 99%
