Yes, James. The heat required to burn wood is caused by reaction with
air. Please read what I wrote previously in reply to the question.
E
On Dec 24, 2013, at 4:20 PM, David Roberson wrote:
The area of the palladium surface determines how fast the hydrogen
escapes and hence the energy released to heat the total mass. This
increasing energy would then heat the palladium mass determined by
the volume of material until the temperature reaches a steady state
value where the heat being radiated, conducted and convected into
the surroundings balance. A finer grained material would release
more heat per unit of time and get hotter.
The hydrogen is burned as soon as it exits the metal, helped by a
catalytic action of the metal. That is the way I understand the
process. One could determine the rate at which hydrogen escapes the
surface of the material by measuring this heating power like
Fleischmann calculates.
I suspect that his calculation is in error if he in fact derived
that 5 milliwatts was the amount generated by the 1 cm cube. This
would not be enough to heat that cube significantly, certainly not
enough to burn wood. Perhaps the wood comes in contact with some of
the escaping hydrogen as it is combining with oxygen in the air.
That would be about the only way to reach the temperature that would
char wood at 5 mW.
Dave
-----Original Message-----
From: Jed Rothwell <[email protected]>
To: vortex-l <[email protected]>
Sent: Tue, Dec 24, 2013 11:01 am
Subject: Re: [Vo]:Beaudette book : "Excess Heat"
H Veeder <[email protected]> wrote:
I didn't know that. Was the slab of Pd much larger than the Pd
electrode used by P&F?
It must have been. In the experiments in question, Fleischmann's
electrode could produce at most 6 nW of local heating from this de-
gassing effect. See:
http://lenr-canr.org/acrobat/Fleischmanreplytothe.pdf
The 19th century palladium electrodes used as cigarette lighters
were probably a few ounces (60 g), and they were fully exposed to
air. That is much larger than Fleischmann's cathode, which was in
D2O vapor with a little air. For the earlier experiment with a 1 cm
cube, Fleischmann calculates: "the rate of diffusion of oxygen
through the boundary
layer could lead at most to a rate of generation of excess enthalpy
of ~5 mW."
- Jed
