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Projects by members => Projects by members => J. Miller => Topic started by: jim miller on October 17, 2021, 17:28:54 pm
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"In the Ferrofluid and Mag-Gas plasma EPG devices the maintenance of magnetic domain is critical for optimum power generation.
In the slurry systems by Meyer, Hauswirth, and Miller et al, (ferrofluid) the disruption of magnetic field orientation is mitigated by the use of orientation coils.
In the gas plasma devices there are several alignment forces present. First, the use of the linear magnetic drives for pumps and then secondly, the magnetic coupling in the paramagnetic matrix
The domains are in one case about 10Nm and the gaseous systems much smaller atomic clusters
The method for creation of larger magnetic domains is as follows:
1 Select the paramagnetic material Fe, Co, or Ni (either powder or larger filings)
2 Select the matrix be used. A thermosetting plastic such as the type used in hot glues
(This is similar to the systems using PIB or poly-silanes )ed.
3. Melt the plastic to the highest temperature possible without breakdown
(The goal is to minimize viscosity) ed.
4 Introduce the paramagnetic material. Brownian movement will be lowered
by the viscous nature of the plastic, When large amounts of magnetite are
used on a vol/vol basis the ferrofluids increase rapidly in viscosity due to thixotropic
and other rheological factors. (Bremen Conference Notes in Dropbox)
5. The reservoir of the paramagnetic//plastic suspension is heated and constantly stirred at this point
6 The molten slurry is extruded under pressure through a heated magnetic alignment tube
7 A nozzle with many small orifices is surrounded by a strong magnetic collar or coil to align the
small particles before cooling the magnetic filament in air or water bath. Spinnerets similar to
"cotton candy" machines are suitable for air dry systems
8 After drying the collected filament, it is then ready to be processed into smaller segments by
mechanical means.
9 The orientation of the magnetized particles is axial to the magnetic force applied and is locked
from further axial change within the smaller segments due to the phase change of the suspending
agent (the thermosetting plastic or glue
10. The increased vol/vol ratio of ferromagnetic material to matrix would result in aa larger magnetic susceptibly and
would result in greater COP values in the mechanical EPG series (over 3 as reported) but the EFFECTIVE
SURFACE AREA OF CONTACT OF MAGNETIZED PARTICLES IS DRASTICALLY REDUCED DUE
TO THE LARGER SIZE OF THE MAGNETIC REGIONS. and due to fewer particles per cubic
centimeter, the viscosity is REDUCED"
Which is easier to stir, a pound of corn flour, a pound of corn meal or a pound of corn kernels when placed in
and mixed with a pint of water? ed
The corn flour "sets up" like paste or a very thick tortilla batter
The corn meal forms a thin gruel
The corn kernels are easily swished around. ed.
11. "The fixation of the magnetic particles maintain and creates a magnetic matrix ,but the use of overall
larger domains or groups in the plastic "bar magnets" results in lower viscosity permanently magnetized
media. The oil or water base used in the slurry becomes the dominant factor in viscosity with the same
or greater magnetic susceptibility per cc
11 the large magnetic particles or magnetic clusters can also subsequently be exposed or coated with either hydrophobic or hydrophilic treatments depending on choice of carrier liquid"
pat pend
sandia24
editor note: thanks Nice work!! This is similar concept to the PIB and Poly silane series discussed elsewhere on this page. ed. jm
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Well from a mathematical standpoint, the Keppler Conjecture would indicate a packing ratio of about 07 or so
for the nanospheres with the voids filled with resin, liquid or air. So the density would be a weighted average
of the relative volumes and densities of each of the nanospheres and carrier liquid
Perhaps a ferrofluid as the carrier liquid with the plastic micro magnetic bar magnets suspended within would increase the
magnetic susceptibly of the total epg core with an acceptable change in viscosity