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Re: water as spark gap dielectric
Original poster: "Jim Lux by way of Terry Fritz <teslalist@qwest.net>" <jimlux@earthlink.net>
At 03:08 PM 4/17/2003 -0600, you wrote:
>Original poster: "Mark Fergerson by way of Terry Fritz
><teslalist@qwest.net>" <mfergerson1@cox.net>
>
>Tesla list wrote:
>>Original poster: "Mccauley, Daniel H by way of Terry Fritz
>><teslalist@qwest.net>" <daniel.h.mccauley@lmco.com>
>
>>What type of material were they using for electrodes????
>>They may have been using some type of exotic metal. I think that during
>>heavy current arcing, the material
>>may break down enough to leak material or other oxides into the water thus
>>ionizing the water and ruining the
>>spark gap.
>
> For that matter, what was the enclosure made of, not to mention the
> pumps, plumbing, etc. (many potential sources of dissolving more ions
> into the water)? AIUI DeIonized water is notoriously difficult to keep
> DI, otherwise we'd all be using it.
The paper doesn't give much in the way of details. The photographs show
things made of plastic.
> Is some kind of continuous-flow deionization system feasible? How
> complicated would that be?
Fairly simple.. it's just a pair of ion exchange resin cartridges (or both
anion and cation resins combined in one cartridge)...
Not cheap though (at least in the budget realm comparable to scrounging NSTs )
McMaster Carr has nonpressure cartridges for $85 that go to a resistivity
of 1 Mohm-cm .. see page 439 in the catalog
> Mark L. Fergerson
>
>