Axil, What you describe reminds me of a super regenerative receiver of long ago. In both cases positive feedback is used to enhance the signal. The effective gain of such a system can become very large and this principle seems to be used by Rossi.
My model suggests that his device is unstable once a threshold drive level is exceeded. Its temperature proceeds toward a dangerous level which might lead to device failure if not halted. The drive heat source is abruptly ended at a proper time which reverses the direction of the temperature movement. To obtain good levels of COP the device needs to reach a level which is barely reversible. I believe from your description that the original threshold of instability would be similar to what happens when the rods are removed from the reactor. The neutron counts begin to ramp up exponentially at the critical level. Shutting down the drive behaves a bit like putting the rods back into the reactor. The parallel seems to end at that point. I suspect that the reactor becomes uncritical as soon as the rods are inserted whereas with my model the positive feedback is still active. Does this make sense? Dave -----Original Message----- From: Axil Axil <[email protected]> To: vortex-l <[email protected]> Sent: Sun, May 26, 2013 10:33 pm Subject: Re: [Vo]: Constant temperature Operation of ECAT? Dear David: I wonder if your model could answer a question for me if it could be done without too much trouble. Rather than stimulating the LENR reaction to a high point and then cooled down in a passive mode, suppose the reaction could be stopped immediately during a supercritical temperature rise. If a way could be found to kill the LENR reaction immediately, the temperature of the reactor would reach to just below the danger point where micro-powder damage would occur. The temperature would begin to fall while undergoing re-stimulation. Upon reaching the low point, the temperature would recover and once again increase in a supercritical mode. Could that type of change in control increase the COP? If so, what would that COP turn out to be? Drawing an analogy from nuclear fission reactors as follows: This type of control is auctioned in a nuclear reactor when the control rods are inserted and then removed. You are modeling a Subcritical reactor. http://en.wikipedia.org/wiki/Subcritical_reactor I would like you to model a supercritical reactor. Controlled by rod adjustment, this type of nuclear reactors was used before reactors became passively self-limiting. The Chernobyl reactor was an example of a rod controlled reactor.
