I am interested in your model and have a question. For some reason I did not
locate the case where thermal run away occurred. I suspect that I missed that
in the large volume of material. Could you direct me to that location?
You mention that I may be assuming a linear internal power generation process,
but that is not what I am doing with my model. I assume a polynomial series
for this purpose. Any mathematical relationship can be tested with my
simulation and I have tested the old tried and true exponential curve as well.
Each one has its own quirks and can lead to thermal run away when the COP get
I am quite pleased that you are developing a model independently from me so
that we can approach the problem from two different directions. One day we
should combine our attempts, but you need to continue for a while longer with
your model. Make an attempt to calculate the COP you are measuring and the
thermal run away process.
From: Alan Fletcher <a...@well.com>
To: newvortex <newvor...@yahoogroups.com>
Cc: vortex-l <firstname.lastname@example.org>
Sent: Wed, Jun 5, 2013 5:09 pm
Subject: [Vo]:Re: [nVo] Moletrap discussions on the "independent report" on
Rossi's Hot Cat
NOTE : this is being sent to vortex AND new-vortex I hope it works!
> From: "Abd ul-Rahman Lomax" <a...@lomaxdesign.com>
> Sent: Wednesday, June 5, 2013 2:50:08 PM
> Subject: [nVo] Moletrap discussions on the "independent report" on Rossi's
> >Seriously, folks..... the one issue that keeps being glossed over
> >whenever it is brought up is just this: How do you control an
> >exothermic reaction at the core of a cylinder by using heating coils
> >further out towards the surface of the cylinder?
> >I have never yet heard a plausible explanation of how this is
> >supposed to work in Rossi's system. It is clear from the graphs in
> >the paper that the system must be supplied with power, literally
> >from outside, or it will cool right off. The data that appear to
> >show it continuing to heat up for a little while after the power is
> >reduced, in each cycle of the thermostatically-controlled power
> >cycling, simply indicate that it takes a little time for temperature
> >changes to propagate thru the device, I think, and in no way
> >indicate that the inner core is exothermic on its own. How do you
> >get any kind of "self-sustaining" behaviour from this, and
> >especially how do you use the heat coils to stop the thing from
> >"runaway heating" and meltdown, if the inner cylinder is a greater
> >source of heat than are the coils?
I have just finished an initial thermal analysis of the Hotcat, using Spice,
an attempt to explain its unusual "sine-like" output.
I tried various possible "waveforms" for the hotcat's excess heat, and found
best fit to be a "sawtooth" -- starting when the heater pulse arrives,
at its peak, and then falling rapidly.
I am working on a model to explain this behavior.
On vortex David Roberson is exploring the control mechanism, also through a
Spice model. He argues for a linear control model.
My short answer is that yes, Virginia ... a small heat source CAN control the
large heat source.