Quirky data in H2 Splitting Cell
From Ryan Hunt:
After a couple months of near zero blog entries from the HUG labs, it probably seemed like we weren't doing any experiments. ... And, we weren't. We shifted our focus for a while on building some domestic water reprocessing equipment for Paul's house. But, we took advantage of a lull in that project this week, and fired up the H2 Splitting cell. This morning we noticed a fairly regular tick in the resistance, the temperatures, and the pressures. Check it out below:
Data available at: data.hugnetlab.com under test FC0408 - LENR Cam: Hydrogen Splitting
Full lab notes in our Evernote lab notebook.
Over the last 3 days, the oscillations have stopped for a while and then restarted. The pressure, though, is more noisy when the oscillations in the temperature are not present.
Meanwhile, there is minor oscillation in the resistance that looks like a sawtooth wave if you zoom in close during the early part of this test where the resistance is generally falling.
We are not sure what to make of all this. What is going on in there? Eyeballs and ideas would be welcome on this mystery.
Comments
We still have the possibility of writing a script to time sample the gamma file, but other than that long shot, we ran out of ideas about how to test to see if it was something convection related vs something else.
http://i.imgur.com/06mjMAc.png
I see you're currently attempting a 1W step down experiment. Interestingly, it seems that temperatures are getting noisier as power gets decreased. I would have expected the opposite happening.
It's still hard to figure out what's going on exactly, though. I didn't initially realize there's a cooling water jacket in this cell, so it might be an idea to switch it off and empty it completely from water for a few hours to make sure it's not causing side effects (since temporarily stopping the water flow alone seems to affect significantly cell behavior as you tested yesterday).
On the other hand, such tiny changes are causing internal temperature sensors to apparently react significantly, although I understand that temperature alone can't tell the entire story.
I tried plotting a short section using "history" 1 Hz data:
http://i.imgur.com/Cjscong.jpg
Top chart: Cu (red), Pt (green) temperature
Middle: Active wire temperature
Bottom: Active wire resistance
The vertical red lines are aligned to peaks in active wire temperature.
I did some more playing with the cell this morning. I detached the power supply from the cell and used a power resistor to test our control software. It works fine on a resistor. We may have a loose connection or short somewhere in the cell.
Currently the cell is not powered and we will decide what to do.
We are going to open up the cell to rule out any shorts or loose connections. The test will not be collecting while the cell is unhooked.
I changed a control parameter and reset the controller board. I will allow the cell to cool and then I will turn it back to 46 watts. I notice that the power was controlling poorly before and that is what prompted me to look into the settings, where I found a small issue.
They should be now every 1-2 seconds. I found that the system was trying to read a board that was no longer attached, that was slowing everything down.
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