Here is a video, queued to the time shortly after the green (active)
thermocouple became hotter than the purple (control) thermocouple. The
control had been running a couple of degrees hotter, previously. The
change-over occurred shortly after raising the power to the point where
the temperature went above 1020c. The timing couldn't really have been
much better. This occurred at 2016-04-16 02:00 UTC.
https://www.youtube.com/watch?v=xUyWnN--u7M&feature=youtu.be&t=13188
Craig
On 04/16/2016 11:27 AM, Jones Beene wrote:
This temperature differential is more meaningful than it seems since
some of the excess heat on the active side goes to heat the null side.
The basic concept of comparative calorimetry is good, and this ceramic
is not a great conductor of heat, but there is a conductive pathway
between the two sides, which could possibly have been made less in an
improved design. Actually the heater wire itself could be part of the
heat transfer problem.
*From:*Craig Haynie
The optical imager is typically reading between an 18c and 20c difference.
Craig
Eric Walker wrote:
Interesting. I hope a post-run calibration shows that when the
fuel is removed, the active and null outside temperatures return
to one another to within experimental uncertainty. This will be
critical to show before concluding anything.
Eric
On Sat, Apr 16, 2016 at 9:58 AM, Craig Haynie
<[email protected] <mailto:[email protected]>> wrote:
60c on the latest...
https://youtu.be/VLK19pllG9g?t=6278
On 04/16/2016 10:53 AM, Eric Walker wrote:
On Sat, Apr 16, 2016 at 2:01 AM, CB Sites <[email protected]
<mailto:[email protected]>> wrote:
I have to say. This one is pretty fascinating. At 1000+C
they had a delta T of 30C between a fueled and unfueled
cell that lasted for hours, until I gave up.
At what time in the video did you see this? When I skipped
through the video, I always saw the "Outside heater active"
(the green line) slightly lower than the "Outside heater null"
(purple line). Perhaps you're referring to a delta between
different numbers than these?
Eric
