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Running on the Celani Wire

Written by Ryan Hunt on .

As of 8:45 am US Central Time, we are starting to run current through the Celani wire.  We describe it as "going live" with the experiment.

We will be ramping up the voltage in the same steps that we tested the impedance of the loaded wire at last night.  Every 45 minutes we will increase the power.  We will be watching the t_rise over the time for each step, in addition to all the other stuff.  In all the calibration runs 45 minutes was plenty of time to come to equilibrium.  

 

The re-warming step

That re-heating mini experiment yielded some pretty interesting stuff.  The resistance hit a new low after cooling after this.  Notice the resistance rises slowly on the first several steps.  On the last 3 steps we see the resistance dropping, probably indicating additional absorption at the higher temps.  By the time it cooled off, the wire was at 14.25 ohms, a new low.  That corresponds to a R/R0 of 0.77!  

Data File: rewarm_steps_desc.csv (2.3mb)

 

Additional Clarification:

I want to specifically thank Francesco Celani for the suggestions and support. It was Celani who suggested the Cool down experiment done yesterday.

 

We'll post new data as soon as we see anything.

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0 #3 David Roberson 2012-11-12 20:24
In the Celani report the strange noise tended to be associated with excess power. It is interesting to see that you appear to have it at this point. Now, let's measure that excess power and celebrate!
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0 #2 AlainCo 2012-11-12 17:06
thanks to share that with us.

Will it be possible to measure excess heat from that run ?

I've noticed that the impedance measured is quite noisy. Is it normal ? Does it happens with Helium run, or with NiChrome wire ?

Does this already mean something "heretic" happens.

dis you measure the spectrum shape of that noise (1/f noise maybe ? classic flat or 1/f^2 ?). One can gain insight about what is happening in the wire by the spectrum of the noise....
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+1 #1 Ecco 2012-11-12 16:11
As I've written in the previous post, following Francesco Celani's suggestion here, it would be interesting to measure the wire impedance after multiple, consecutive loading>cooldow n cycles. It might prove to be an effective way to increase loading (decrease R/Ro) quickly and maybe more than it would normally be possible.

By the way, looking at the chart posted above, maybe 45 minutes aren't enough to reach thermal equilibrium for each power step.
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