Does anybody know what type of conductive fluid would be best for use in an electromagnet so as to increase current though an increase in surface area?
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Re: Fluid conductivity
Mon, March 29, 2004 - 2:28 PMMHD devices use plasmas for conductivity.
Magnetohydrodynamic generation can use hot (or low pressure) ionised gases to act as a moving conductor in a field.
This also forms the basis for Tokamak magnetic containment fields.
Is this the sort of thing? -
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Re: Fluid conductivity
Tue, March 30, 2004 - 6:55 AMYes. Thank you Erik. Although, I wasn't thinking plasma, it is probably more practical for the application I am thinking of. I also reviewed several MHD publications on the web and found some very interesting information. Again, thanks for the heads up. -
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Re: Fluid conductivity
Thu, April 1, 2004 - 1:11 PMI worked at a huge research lab a decade or so back where a lot of MHD work was done.
It had the potential to convert thermal energy into electrical energy at theoretically 70%-90% efficiencies I think I remember.
It was canned since the electrodes kept melting, but that was before ceramic conductors.
There are so many things which can be done in Engineering if we can master containment fields.
There seems to be a lot of fluid mechanics in Tokamak reactor containment fields.
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Fluid conductivity & Tokamaks
Thu, April 1, 2004 - 1:14 PMI worked at a huge research lab a decade or so back where a lot of MHD work was done.
It had the potential to convert thermal energy into electrical energy at theoretically 70%-90% efficiencies I think I remember.
It was canned since the electrodes kept melting, but that was before ceramic conductors.
There are so many things which can be done in Engineering if we can master containment fields.
There seems to be a lot of fluid mechanics in Tokamak reactor containment fields.
Fundamentally, we could spin a gas much faster than a solid and if the gas conducts, perhaps we could increase flux density (cf. Hilsch tube).
Now maybe magnetic fields in electromagnets are all to do with the density of the core material, but if a spinning conductor creates a magnetic field, could a highspeed plasma give us huge flux density?
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