Terry, I assume that you do not believe that LENR had anything to do with what happened. There may be another explanation but it appears that the same thing occurred during several different, yet related experiments.
Take time to consider why you are convinced that a thermal run away condition could not have yielded this result especially since Rossi has also warned about it on numerous occasions. If you are not familiar with negative resistance type regions of operation for devices such as tunnel diodes then I understand how this concept seems strange to you. Once you become familiar with the subject you will see how it might apply. The best way to visualize the effect is to consider what it means to operate within a negative resistance region and how that impacts the behavior of the core temperature with time. Assume that enough drive power is applied to the Hotcat like device to push it into its negative resistance region. The region begins at a well defined temperature that depends upon the amount of fuel, the activity of the fuel, and the geometry of the structure among other parameters. Before you enter the negative resistance region you will find that a small addition of input heat power to the structure will cause the temperature to increase slightly. If instead that delta in temperature were directly applied you will measure less additional power generated than was applied originally. This operation is stable and the output temperature is bounded. Once you enter the negative resistance region things change. Within the negative resistance region that small delta in input power causes a larger delta in temperature than is required to replenish the initial change in power input. The power will thus continue to build up exponentially and the device heads towards self destruction. This process can be turned around by removing the drive power if that occurs quickly enough. Also, some other method can be applied that begins to extract power rapidly with increasing temperature so that another stable region is reached before the device is destroyed. This would be the ideal type of operation but may be very difficult to achieve. I have long suspected that Rossi uses the pulse width modulation technique to keep his ECATs under control. If he is careful, he can achieve a COP of 6 by this method as he claims provided his devices have a negative resistance region. Perhaps the MFMP team will have an opportunity to try this technique themselves once they prove that thermal run away is the reason for the melt down they experienced. It would not be a big surprise to find that the thermal mass of the system must be increased to slow down the rate at which the device progresses towards that fatal end result. Additional evidence that thermal run away will be big problem to resolve is seen in the behavior of the Hotcat tested by the independent scientists. Parkhorov appears to have measured the same factors. They each measured a modest COP, quite a bit less than 6 when operating without a negative resistance region being present. I strongly suspect that Rossi was careful to ensure that the amount of fuel that he inserted into that test unit was small enough to keep it stable at all drive levels. And, Parkhorov initially exhibited a stable system that may not have been entirely by good fortune. He may have played with the fuel charge until he got the best behavior while avoiding melt down. Once insulation was added to his system it was pushed over the stable operating line as a negative resistance region was produced. If LENR is real and strongly temperature dependent then thermal run away is going to be an issue. I fail to see how that is something that should not be taken seriously. This is especially true when the evidence points in that direction. Dave -----Original Message----- From: Terry Blanton <[email protected]> To: vortex-l <[email protected]> Sent: Mon, Feb 9, 2015 10:34 pm Subject: Re: [Vo]:Explosion May Be Out of Control LENR Hah!
