For what it's worth, in twin carbon arc welding too (the closest thing to the tests/experiments I did) it's a known fact that AC makes for an even electrode wear compared to using DC.
Rossi is applying a DC arc (even if with an AC component), so one of his electrodes will wear faster than the other at any given time.
If his electrodes are truly nickel, it isn't the initial arc that is going to be a problem.
can ,
Standard plasma lighting technology uses AC to equalize wear on the the electrodes, and balance the heat from end to end. In automotive use, bulbs (and ballasts) last typically 3+ times longer using AC output compared to DC output. (Aftermarket retrofit cheap ballasts are almost all DC, because they are cheap to build. Factory automobile systems are exclusively AC output.)
Some DC plasma systems reverse the direction from the last at each new start (mostly to keep Hg, etc from accumulating at one end). Some arcs are cone shaped due to electrons repelling each other, so the DC electrodes are configured as a sharp point opposite a larger cylinder to equalize heat.
A big spike in voltage is pretty much neccesary in order to strike a plasma across a gap. With no gap, a strike-hold power supply may sense the low resistance (compared to a gap) and not fire the initial voltage spike. This might be a safety feature, or might simply be not possible without the "air" gap.
Xenon is the arc helper. It reduces the arc maintaining voltage.
So all of a sudden there is 11.52 V (DC) across the whole system, rather than 100 mV (report/whiteboard).
And still only around 280 to 300 mV (DC) across the 1 ohm resistor during the experiment.
The COP is getting murky... taking an order or two of magnitude hit compared to the report version.
Kudos to Mats for installing a voltage divider on the system.
How big was that 800 ohm resistor? 50 W is a lot of power.
3 W makes a 10 W resistor get to about 70 C.
HID headlamps typically use from 35 to 55 W, so that right in the ballpark for a plasma in the 0.6 cm x 0.08 cm range.
Use of cm instead of mm is supported by the exponent shift of the Stefan-Boltzmann constant from 10-8 to 10-12 due to using cm2 instead of m2 for the equation as described by Rossi after 2:27:00 in the video.
LDM ,
Basically, I was using for a while an online calculator which seemed to work quite well.
I was basically musing that a bare cylinder with increased area to incorporate the fin view area and a minor emissivity adjustment to incorporate that effect of the fins could be used as a simplified model. Such a model could be compared to the advanced model to see how well it works.
Apparently, according to Lewan (Rossi) the "real" size of the plasma is 0.6 mm x 0.08 mm (millimeters). It's very small.
At 1:57:00 in the "live stream" video.
It is measured in cm in the video (at 2:27:00 in the link above), so is 0.6 cm X 0.08 cm.
Not sure if that includes the circumference of the plasma.
If includes circumference: 13.1 W
If 0.08 cm is diameter: 41.2 W
I will be doing my next experiment in Space.
Some space hosted by my garage...
Apparently, according to Lewan (Rossi) the "real" size of the plasma is 0.6 mm x 0.08 mm (millimeters). It's very small.
At 1:57:00 in the "live stream" video.
OK.
Anyone want to re-do the blackbody calculations using those as the parameters for area?
I think we can take it as a fact that the temperature of the liquid-phase within the Big Frankies was near 100C. Barry West testified that he heard the noise of vigorous boiling coming from inside the Big Frankies.
I though that BW was referring to the reservoir boiling.
So, according to LDM, the equivalent diffuse surface cylinder without fins (at the same length of 0.2 m) would be 2.67 cm in diameter. Or is it better to make it longer at the 2 cm diameter?
Rossi has sigma 5 proof of performance. No problems have not been overcome. It works every time, without fail. Sigma 5! This is a product, not a test. It is perfected technology, not a bunch of Home Depo and Doral Electronics parts jumbled together. Super fancy Amplitude modulation riding on a DC bias, not some sneaky fake ground through conductive plastic or tricks with resistors and AC. Super hot plasma tuned down to not melt nickel and ... uh... Home Depot parts... and electrical tape... and plastic right next... ah..to... ahem...ah... a nuclear reaction...
I happen to have 3 x 270 ohms resistors here at home.... Should do for now.
So was that Hurley's head in the old whiteboard photo? Sure wasn't Gullstrom.
Display MoreParadigmnoia wrote"An HID lamp can have a color temperature of 20000 K, and still be less than 4000 K in temperature"
True ...I googled 2500C
but what was the stated temperature of the Rossi device?
I missed it
The good thing is that this thread does seem to have the anomalous heat removed.
perhaps a jester like Maryyugo does serve a function?
In the Gullstrom-Rossi report, the temperature by light spectroscopy was reported as 2635 K.
An HID lamp can have a color temperature of 20000 K, and still be less than 4000 K in temperature.
I guess I have to scrounge an 800 ohm resistor...
https://en.wikipedia.org/wiki/Amplitude_modulation
(By Originally by The.ever.kid, drawn using Mathematica and Adobe Illusttrator and simplified version drawn by hand using a text editor.Simplified hand-drawn version by Rubber Duck (☮ • ✍) - Own work., CC0, https://commons.wikimedia.org/w/index.php?curid=22722652)
I think that the 800 ohm resistance was used instead of the Q-X at some point.
