In this case I am thinking of long term operation where the initial heating becomes insignificant with time. A short term test would need to consider the heating up.
Dave -----Original Message----- From: H Veeder <[email protected]> To: vortex-l <[email protected]> Sent: Mon, Feb 9, 2015 2:07 pm Subject: Re: [Vo]:Titanium as hydrogen carrier in Improved experiment Does the COP include the energy of pre-heating? Harry On Feb 9, 2015 1:48 PM, "David Roberson" <[email protected]> wrote: That is good Jack. Perhaps it is less intuitive but it captures the behavior of these types of devices very well. If the slope enters a negative region then the positive thermal feedback wins the battle and the device heats up rapidly. The curve also will indicate whether or not a second high temperature region of stable operation is present. Your present design would be classified as a type 1 system in my analysis since the slope of that curve never enters into a negative region. Once you push it into a type 2 or 3 system the fireworks will begin. That is where Dr. Parkhomov is operating with his latest version that is somewhat insulated. It is going to take a lot of effort and good design for him to keep these stable. I modeled this curve according to the behavior of a tunnel diode. Since the voltage is analogous to the temperature and the power input analogous to the current it makes perfect sense. You can determine how to design tunnel diode oscillators or switches from that basic curve. I see the same thing happening with these LENR devices. I also realize excellent correlation to my previous computer models. Dave -----Original Message----- From: Jack Cole <[email protected]> To: vortex-l <[email protected]> Sent: Mon, Feb 9, 2015 1:32 pm Subject: Re: [Vo]:Titanium as hydrogen carrier in Improved experiment I can add that chart. That is actually the way I plot it for calculating excess power, but it's less intuitive in a presentation. On Mon, Feb 9, 2015 at 12:20 PM, David Roberson <[email protected]> wrote: Not exactly. The slope of the input power will become lower as the temperature is increased in the chart that I use. If this slope is not reduced as the temperature rises then there is little positive thermal feedback present. And, if the slope enters into a negative region as temperature rises the device will continue to heat up until it either self destructs or the careful geometry of the design begins to take more heat power away from the system than is added by the core. The new high temperature safe operating region exhibits a positive slope similar to what is seen below the negative slope threshold temperature. Dave -----Original Message----- From: Jones Beene <[email protected]> To: vortex-l <[email protected]> Sent: Mon, Feb 9, 2015 12:55 pm Subject: RE: [Vo]:Titanium as hydrogen carrier in Improved experiment Isn’t chart D giving you that ? From: David Roberson I would like to see the curve of input power versus temperature plotted. The input power needs to appear along the Y-axis and the temperature along the X-axis. This type of curve tells very much about how the device will behave. It can demonstrate when the COP will become large and indicate the potential for runaway conditions. Dave -----Original Message----- From: Jones Beene <[email protected]> To: vortex-l <[email protected]> Sent: Mon, Feb 9, 2015 12:21 pm Subject: [Vo]:Titanium as hydrogen carrier in Improved experiment Jack Cole has made progress in his continuing effort to reach higher COP at lower temperature in a ceramic cell of the type used by Parkhomov and Rossi. http://www.lenr-coldfusion.com/2015/02/09/excess-heating-alternative-hydrogen-source/ The results are improved but still only slightly gainful –not far enough above the noise level to expect others to drop everything and pay attention, yet … but heck, look at it this way – the delta-t gain is improved by about 50% over the previous iteration - and at that rate of improvement, it will not take long. A goal of COP=1.5 is in range with only a few more changes. In fact, Jack held back on the hydrogen carrier (TiH2) due to the MFMP “explosion” and therein is an obvious way to look for further improvement. The most notable feature is that gain was seen at very modest P-in which is due in part to thermal insulation. Jones PS – there is a paper in the LENR library by Dash et al where the authors state that titanium is more active for LENR than palladium. Therefore using TiH2 to carry hydrogen, while retaining lithium in a much safer form is almost a no-brainer.
