If the mouse achieves some form of active cooling then his recent description would make sense. We have discussed this as a possible means of achieving control of a thermal positive feedback system, but so far Rossi has not clearly come out with a hint, with the exception of that recent statement. It would likely be possible to achieve a much larger net power density and COP if the temperature were controlled in this manner, but then thermal run away would always be close at hand. My belief is that he is still working with external heat input and rapid turn off of that source for control. This type of system would be easier to build and is constructed in the manner to which he has ample experience.
Future models of his design may well use some form of active cooling for control, but I suspect that Rossi will want to introduce these techniques with plenty of caution. He should concentrate upon rapid introduction of his devices into the marketplace. After all, the eventual payoff will come when sells and deployment occurs, meanwhile competition is nipping at his heals. Dave -----Original Message----- From: Alain Sepeda <[email protected]> To: Vortex List <[email protected]> Sent: Tue, Dec 31, 2013 5:53 am Subject: Re: [Vo]:from Rossi's blog -- destructive tests -- 1MW in 10 secs if Rossi use the good word and the mouse is a negative feedback (beside establishing a working point temperature), it is a very good news. Until recently I felt concerned that LENR have positive sensitivity with heat, unlike fission reactor in the stable zone. The way it can have negative feedback may be smart... maybe it is a question of hydride loading and unloading. maybe is it not really negative by 90degree phase shift, because LENR may (?) be caused not by temperature or loading, but by temperature variation and loading variation.. if the cat is also 90degree shifting, the you have simply a negative transform function... it can even be more complex with heat variation inducing loading variation, and inducing power... another kind of solution could be that the negative feed back, of the phase shift is done at specific time-scale. I suspect that Defkalion use such time-scale transfer function variety... imagine a system which is slowly supercritical at short term, and subcritical at medium term... you just can just cause pulse that fade away... it looks like what defkalion shows This is only speculation, just to show that thing can be varied... as many people said here, the question of stability and control is not easy, but there are room for engineers ingenuity. after all the real secret of of fission reactor is the negative feed back between temperature and neutron capture. 2013/12/31 Axil Axil <[email protected]> Could it be that Rossi is using words in the wrong way to describe his invention as follows: It might be that Rossi is meaning that when the temperature of the Cat raises, the mouse is turned off. When the temperature of the cat lowers, the Mouse is turned on. Otherwise. "the temperature of the Cat raises when the Mouse is turned off" If these words are being used correctly, then the Mouse is a negative feedback device that dampens the Cat like a nuclear control rod. The Cat is therefore supercritical. "lowers when the Mouse is turned on" is also consistent with a dampening mechanism. On Mon, Dec 30, 2013 at 3:26 PM, Alan Fletcher <[email protected]> wrote: From: "Daniel Rocha" <[email protected]> Sent: Sunday, December 29, 2013 10:13:46 AM The "mouse" is nothing more than a ceramic canister within his SS tube full of (most probably) MgH and Ni acting as a catalyst to brake the released H2 to atomic from its solid state MgH at high temperatures. If H or Mg are in contact with air or moister then a Lungmuir toarch reaction (reaching 3400C) and/or a violent reaction of Mg with H20 give such "explosing" results lasting for some seconds. Such are not desirable results but accidents due to poor controllability. - - - You might be right on that one : Andrea Rossi December 29th, 2013 at 6:10 PM Hank Mills: ... 4- the temperature of the Cat raises when the Mouse is turned off, lowers when the Mouse is turned on
