Alan, 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 large. 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. Thanks, Dave -----Original Message----- 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 Hot Cat > >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, in an attempt to explain its unusual "sine-like" output. http://lenr.qumbu.com/rossi_hotcat_may2003_spice_130605.php I tried various possible "waveforms" for the hotcat's excess heat, and found the best fit to be a "sawtooth" -- starting when the heater pulse arrives, finishing 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.