Point out news stories, on the net or in mainstream media, related to polywell fusion.
Not quite yet. A typical temperature of things in a high desert sun is closer to 200F than 107F. If 200F can be reached then no active cooling would be needed at all (call it 99+% of the time). JMHO.DeltaV wrote:Time to switch from "Lewis & Clark" to "Conestoga Wagon". Tc is good enough, for now.
How much does it seem to hate moisture? In some applications a sealed, even vacuum, container would be viable. My question is, to repeat, when will we see any of this in bulk superconductivity?
The daylight is uncomfortably bright for eyes so long in the dark.
After patent applications?
EDIT: raised Tc in thread title.
He should really focus on yield improvement now. If successful, the money would appear quickly for raising Tc later.These are the ninth and tenth superconductors found to have transition temperatures above room temperature.
1. Materials 5, 6 and 8 have not yet been published, pending patent application.
EDIT: raised Tc in thread title.
If the activity on the MT curve is measurement error, or one of the other possible phenomena than superconducting transition, "increasing the critical temperature" is considerably easier than increasing the yieldDeltaV wrote: He should really focus on yield improvement now. If successful, the money would appear quickly for raising Tc later.
With a little bit googling you can find discussions, articles of the possible measurement errors, other phenomena responsible for the measurements etc
For example these:
What could be the different mechanisms responsible for diamagnetic transition apart from superconductivity?
http://www.researchgate.net/post/What_c ... nductivity
http://iopscience.iop.org/1009-1963/11/ ... x20412.pdf
Investigation of the positive moments on the M-T curve of a YBCO film measured by using zero-field cooling
The experimental results have shown that there are positive magnetic moment and positive peak on the M-T curve. We have proven that these anomalous behaviours are due to measurement error, but not phase transition.
Not so, at least for a Fusion reactor like the Polywell. Even with P-B11 fuel and piratically no neutrons, there will still be megawatts of X-ray Bremmstruhlung radiation, and hot ions and electrons (primarily electrons) hitting the magnet cans through ExB drift losses. If electron cusp losses are around 10-50 MW then ExB losses may be around 0.1 to 5 MW, depending on how you digest the numbers mentioned in the patent application (ExB losses being 1 to 10% of the electron cusp losses). Admittedly there will be no ohmic heating in the superconducting wires, but there will still be significant heating of the magnet cans that will have to be carried away with flowing coolent. Again, depending on the numbers, this incident heat load may be greater than the ohmic heat load in liquid nitrogen cooled copper electromagnets, so cooling requirements may still be as much as 10-50% or more of the heat load of the copper versus superconducting wires.KitemanSA wrote:Not quite yet. A typical temperature of things in a high desert sun is closer to 200F than 107F. If 200F can be reached then no active cooling would be needed at all (call it 99+% of the time). JMHO.DeltaV wrote:Time to switch from "Lewis & Clark" to "Conestoga Wagon". Tc is good enough, for now.
To error is human... and I'm very human.
Wimper!D Tibbets wrote: of X-ray Bremmstruhlung
Please Dan, it is Bremsstrahlung. BremsstrAhlung.
It is the combination of the two German words "bremsen" which means "to slow something down" and the word "Strahlung", which means "radiation".
Sorry buddy, I have sent you a private message about this once or twice, but I cant take it anymore. Your spelling of this word makes me cringe in pain