Dave, Jack, etal--
I concur with Dave’s comment. You want negative temperature feedback, at least in the range of temperatures you want to operate. The same idea is used in the dynamics and control of slow neutron, water cooled fission reactors. The objective in this reactor is to keep the flux of slow neutrons constant with power requirements. More neutron flux provides more power and higher coolant temperatures. As temperatures increase more power can be withdrawn from the coolant leading to a larger differential temperature across the reactor. The cooler portion of the reactor produce more power than the warmer portions because a lower energy neutron has a better chance of causing fission in U-235 than the higher energy ones (hotter ones). However one objective for the neutron flux (which is a spectrum of slow and fast neutrons) is to assure the fast neutrons do not get the upper hand on power generation and cause a prompt criticality and a runaway reaction. Fast neutrons have a very short time constant for their multiplication and are not able to be effectively controlled once prompt criticality occurs. This analogous situation may occur in the MFMP reactor. The controlling parameter resonant responses of the NAR to temperature or some other variable, for example, wave nature of the Li g Cookas and/or the hydrogen gas needs to be determined and then controlled. That is the development objective for any viable reactor that I think Rossi has achieved.. Bob Cook Sent from Windows Mail From: Jones Beene Sent: Monday, February 9, 2015 11:03 AM To: [email protected] Couple of more details of interest: the hydrogen release of TiH2 starts at 350 C but the compound is a poor storage material for hydrogen, as a general rule, since the last hydrogen will not be removed easily. However… hydrogen transport could be less important than “participation” in the reaction … Here is an old paper which indicates that titanium itself is very active for LENR, so it would be the ideal carrier for hydrogen which also participates in the gain. http://www.lenr-canr.org/acrobat/DashJexcessheat.pdf Simply use more of it. It is inexpensive. The magnitude of excess heat is said in the paper above to be greater for titanium than for palladium ! From: David Roberson 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
