This is another one of those "give Rossi the benefit of the doubt" issues:
The only way I can conceive of a temperature equilibrium in a temperature-enhanced LENR system that doesn't have a heating element setting its lower bounds (and heat-transport medium's phase change its upper bounds) is to feedback from temperature to the heat-transport medium's mass flow rate. If there is no such control then I can't conceive of how the temperature is stabilized. On Tue, Nov 15, 2011 at 1:36 PM, Joshua Cude <[email protected]> wrote: > > > On Tue, Nov 15, 2011 at 1:18 PM, James Bowery <[email protected]> wrote: > >> On Tue, Nov 15, 2011 at 11:56 AM, Joshua Cude <[email protected]>wrote: >> >>> 2011/11/15 James Bowery <[email protected]> >>> >>>> If the pressure at the output thermocouple of the Oct 28 demo exceeds >>>> the critical pressure of steam at the reported temperature, then there is >>>> no heat of vaporization represented in the mass flow hence in the imputed >>>> power level. >>>> >>> >>> As Stephen Lawrence has emphasized, if the fluid is all steam at the >>> output, then the temperature fluctuation corresponds to about a 1% power >>> fluctuation. If it is all water, then it's about 2%. Neither seems very >>> likely given the huge range of power outputs reported over the year. >>> >> >> My understanding is that Rossi's primary problem in achieving >> self-heating was fine tuning the control of the water flow rate so as to >> stabilize temperature, rather than relying on an internal resistance heater >> to assist in setting the lower bound of the target range. If that is the >> case, then we should expect to see fluctuations in mass flow rate rather >> than fluctuations in temperature -- regardless of phase. >> > > I guess that's possible, although you might expect a kind of oscillation > in the temperature, like you get with a thermostat. Where does he describe > this? Does he use the output temperature in a feedback loop to adjust the > flow? I haven't seen any indication of that in any of the earlier ecats, > and not enough of the multi-cat was shown to see any evidence for it. > > >
