Here's a 33 minute period from this morning. To me they look kind of inverted - one goes up when the other goes down. At least in this sample. The 50-minute cycles may be there but have to be confirmed by the math ... the mind is sometimes too good at finding patterns.
Jeff On Thu, Dec 13, 2012 at 7:00 AM, David Roberson <[email protected]> wrote: > I think that there is a strong correlation between the ambient and the > assumed power output. > > Dave > > > -----Original Message----- > From: Arnaud Kodeck <[email protected]> > To: vortex-l <[email protected]> > Sent: Thu, Dec 13, 2012 4:41 am > Subject: RE: [Vo]:Direct heating of Celani's wire at EU cell of MFMP > > The frequency of T° ambient and P_Xs are the same (Around 50 minutes). Is ir > a coincidence? > > Arnaud > > On 2012-12-13 03:29, Craig wrote: > > > This is so strange. I set the data in View Test Celani Cell #2, found > > here: > > > > > > http://data.hugnetlab.com/ > > > > > > to view back 4 hours. Then I selected only P_Xs Low. Notice that the > > > excess power is oscillating between 4 watts and 8 watts, in a very > > > precise rhythm, with each wave appearing to have the same shape, and > > > with each wave lasting about an hour. I also see that the wave appears > > > to be tapering with the lows becoming higher and the heights become > > > lower. There also seems to be a correlation with T_Ambient, but why? > > > > Whatever this is, it didn't happen with the previous overnight run with > > power applied to the inert wire (and the active wire partially loaded, > > in hydrogen atmosphere). This is a user-submitted image from the MFMP > > blog showing it: > > > > http://i.imgur.com/bB383.png > > (note that "Power (Red)" actually shows W instead of bar) > > > > From 2012-12-12 00:00 to about 10:00, external glass temperature (under > > 50W of indirect heating) didn't seem to fluctuate very much with ambient > > temperature. However with direct heating (48W) it does quite much. > > > > The main difference between those two runs is that the one with indirect > > heating had a starting hydrogen pressure of 2 bar (which increase with > > heat, of course), while the latter ones started at 1 bar, probably > > offering less thermal inertia (but still not explaining how glass > > temperature variations can be larger than ambient ones, assuming that > > these are the ones which drive them). > > > > Cheers, > > S.A. > > >
<<attachment: P_Xs_T_Amb_20121213_0700_0733_Eu.PNG>>
