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Fast Paced Progress

on .

We are still fitting the new flanges to the borosilicate tubes, which Mathieu found out the Pyrex borosilicate is still not the same glass Celani used.  He is shopping for the Schott-Duran brand glass that Celani used in order to do the most accurate replication possible.  The thought is that the glass will retain more heat and won't require as much power to get the test cells to the preferred operating temperature.

The risk is that if we have to put too much power into the wire to heat the cell to the required temperature we might overload the wire and it will burn out easier.   

Tonight at midnight we will be done with the prescribed calibration plan for the control wire in the quartz tube.  We are  getting a nice, tight baseline calibration curve with about 1 to 2 watts of uncertainty, which will correlate to 2 - 4 degrees C roughly.  If we see a temperature rise of more than 5 C we will be pretty certain we are seeing an effect.  If we get 10 to 20 watts of power off the wire, we can expect roughly a 20 to 40C higher temperature.  The graph below shows the confidence limits around the average temperature of the Mica as a function of the temperature.  


Tonight, we took the the input power and the averaged values of the temperature rise and used zunzun.com to find a good equation to fit it. The results look like this.  

Next, we'll use this formula to add a calculated field for power out as a function of T_rise on the live data display.  

That means, we should be ready to load the Celani wire tomorrow, unless we think of something else that is worth doing first.  The anticipation is thick here.  So is the nervousness.  We don't want to make any mistakes with the wire.  

We are working feverishly to make the live data feed work well enough to share.   As soon as it does, I will share it so everyone interested can watch the active wire (hopefully) generate excess heat.

Matt and Nicolas are working on the Euro Cell.  The software is getting frustrating, but we pointed them at a java graphing program that should help them watch the data easier.  We are putting together a shipment of parts like flanges for the new glass, some Isotan 44 wire, and a few other little parts.

Hey guys, be sure to get pictures and/or video of working together.

In other news, some key parts for a next generation test cell arrived today.  More details on that as soon as I need a filler article.



+2 #17 Ake Malhammar 2012-11-10 11:59
It seems to me that the calibration of this device is a complex matter. The wire is cooled by radiation and convection. Using a calibration gas with less good convection properties than hydrogen, which I believe helium is, will cause a higher wire temperature and proportionally more radiation. Some of that radiation will simply pass the glass tube.

It can be compared with a heat flow leak which at calibration is higher that for the “sharp” case.

The convection properties depend of the Rayleigh number. To be 100% sure to exclude the effect you need to calibrate with two gasses, one with higher and one with lower Rayleigh number than hydrogen.

Another option is to use a non-transparent tube.
0 #16 Al Potenza 2012-11-09 19:30
I don't think I understand the "calibration formula" curve of T of mica vs "power out". By "power out", what do you mean? Is that the power supplied to the heater? (I'd have called that "power in" if it is).

And when you measure the temperature of the mica, do you allow it to reach steady state at a given power level or are you following some sort of consistent power vs time program? If so, what's the heater power vs time curve?

I am sorry if this has been explained elsewhere. If so, please just link the explanation.

0 #15 Robert Greenyer 2012-11-09 09:05
Thanks for the tip on the webcam software Valac
0 #14 Ryan Hunt 2012-11-09 05:44
The webcam is a great idea. We are rather bandwidth limited at the moment, so it will probably be very low speed. How does an image a minute sound?
0 #13 Valac 2012-11-09 05:09
I use this software, its quick to setup

0 #12 Stefan Liguirre 2012-11-09 01:43
Will you stream the important test?

Just put a webcam in a corner, it'd be easy.
0 #11 Robert Greenyer 2012-11-09 01:39
We are doing the internal MFMP tests to establish if we can reproduce the effect. That implies we are sceptical - we need to be sure that a plug and play test that works can be delivered to multiple locations and so we have to be diligent and methodical in our approach.

This will give us insight and understanding for the next phase. The big social funding and multiple replication of a second generation reactor that will hopefully help to kickstart a revolution.

If the team strike first time - you lot will be right there with us - it would be lucky for sure - but whatever happens we'll keep testing so as to understand what works and what doesn't and this will take the process forward. Thanks for engaging and spread the word - The New Fire is coming!
0 #10 Rats 2012-11-09 01:07
Quoting David Jones:
I’m a complete sceptic.

I too am skeptical but nonetheless I remain hopeful. After the whole Rossi saga who can blame us for being more cautious than normal?
0 #9 Alex Tsakiris 2012-11-08 23:49
these updates are great... makes me feel like I'm right there in the lab with you guys.

you oughta start some kinda pool as to when "the effect" will be seen. if you make it happen by the end of the week (sat midnight) I'll throw in another $50 toward this great project :)
0 #8 Rats 2012-11-08 22:09
Hey, guys seems like you're making good progress. Can't wait to see the actual test run.

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