On Tue, Nov 15, 2011 at 11:56 AM, Joshua Cude <joshua.c...@gmail.com> wrote:

> 2011/11/15 James Bowery <jabow...@gmail.com>
>
>> 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.

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