[NewCandle] Mega-roll goes critical

[Nick Reiter]

Heyyo, Keith,

Excellent work - thanks for sharing your results! 
Whenever I can get my next round of rollin' started, I
do plan to thermocouple the hell out of it, just to
look at the slope of the heat-up.

Good stuff!

N


--- Keith Nagel <NewCandleAdmin at ipdiscover.com> wrote:

> Hi Nick,
> 
> OK, I just smoked a roll, here's the skinny.
> 
> 600ml beaker, distilled H2O with NaCl using your
> concentration ratio. About 6 square ft aluminum.
> 
> The beaker was put on a hot plate and variac, and
> I slowly increased the temperature.
> 
> Below 50C, very little bubble was noted.
> At about 50 degrees C bubbling began in earnest,
> every 10 degrees over producing some more ( but
> it didn't seem proportionate. ). I let
> it sit for a while as I got a call from Fred Sparber
> who wanted to talk about this Kansius fellow
> and his RF heating/dissassociation of salt water.
> So we shot the breeze while the thing bubbled away.
> Now, I just cut the power, and the bubbling at
> 50 C is much smaller on the way down... This makes
> some sense to me, as the protective layer is thicker
> now than on a fresh piece of foil on the way up.
> 
> Now 50-60C is warm to the touch, you can still hold
> the beaker at that point. At that point, H2
> generation
> was about what it was at the peak of my distilled
> H2O experiment.
> 
> Although this doesn't prove thermal runaway is the
> cause of the effects noted by Nick, it does show
> that the reaction can be increased by temperature
> rise
> and there is a critical temp over which the reaction
> begins to run in earnest. And we also know
> that the dissolution of the Al is exothermic.
> And there's a large thermal mass with the working
> protocol. So all the pieces are there. To really pin
> it, one
> could do the exact working protocol, but suck the
> heat out with a cooler to maintain a constant room
> temp. I would predict then that it would behave just
> like our previous experiments, reaching a peak of
> activity and then subsiding after a time. 
> 
> Alternately, one could do a smaller amount of Al
> in a dewar, to catch the heat. Then I would expect
> boil off with reasonable amounts of Al.
> 
> Time to get back to the code base, for this
> afternoon
> anyway. WIPO is about to get some weirdly formed
> search requests...WTF???
> 
> K.
> 



       
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