ah at last a control-command model of the reactor... beware, you publish trade secret !
I know an engineer that given that knowledge can install an automotive computer, program a matlab model, and control that the optimal way, with a hardened processor tha resist all a car can suffer. ask him a thermal engine and he make a CHP (all is on-the-shelves). talk him of thermal regulation and smart grid awareness... I guess he can... time is for engineering. 2013/5/31 David Roberson <dlrober...@aol.com> > There is a wealth of information contained within the shape of the > output temperature curve associated with operation of the ECAT. My spice > model also demonstrates this behavior and the testers eluded to some of the > important issues. It is apparent to anyone reviewing the output > temperature curve that the ECAT does not behave like an ordinary resistor. > > The time frame over which the ECAT operates is determined to a major > extent by the thermal mass of the device and that is why the earlier CATs > operated for variable periods within the SSM(Self Sustaining Mode). For > some reason the skeptics do not understand this issue and make a big deal > out of the relatively rapid cycle period of the latest test unit. You can > expect this parameter to change repeatedly as the design is modified into > the future. > > I want to point out an important feature revealed by the output power > curve. This curve can be found in the released paper on page 27 as plot > 8. When positive feedback is active, the resulting temperature curve has a > well defined characteristic. Most of the runs that I have done with my > model are when the COP of the ECAT is usefully high. Of course COP of 6 > falls into the category, while the lower COP of 3 does not hold as much > interest. > > If you look at the falling edge of the waveform you will see an inflexion > point. High temperatures above that location are generated as a result of > positive feedback with a the loop gain of greater than 1. This causes a > bowed shape where the temperature wants to stay elevated. At the inflexion > point the gain becomes less than 1 and stable operation ensues. > > The driven portion of the waveform behaves in a similar manner. This is a > bit less evident due to the masking from the input power. Initially the > loop gain is less than 1 with a very low COP if held at the operation > point. But, to get the good performance, drive is continued at a level > that leads to the unstable state which is when the loop gain is 1 or more. > An inflection point shows up when instability is reached. > > Enough for now, > > Dave > > >
