Re: why? chilled spark gap tips gives more spark?

["Jim Lux" <jimlux-at-jpl.nasa.gov> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Deionized water is a fairly good insulator for HV.  Run a chiller for the
water and flow it through the electrodes.  After all, how cold do you want
it?   If you want even colder, you're going to have to go to some other
heat transfer medium.  low viscosity oil might be a possibility. Fluorinert
(like FC-77) if you're independently wealthy.  High pressure chilled gas
might be an even better choice.  Cold H2 or N2.. N2 you could get from
boiloff on liquid N2 (or you could use LN2 as the coolant).

----------
> From: Tesla list <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: why? chilled spark gap tips gives more spark?
> Date: Saturday, July 22, 2000 10:28 AM
> 
> Original poster: "Kevin R Eldredge" <kreld-at-juno-dot-com> 
> 
> James, all
> 
>   This is and always has been a problem with spark gaps of any kind, heat
> that is.  I'm glad someone as yourself has looked into this area, as I
> have seen little discussion on this matter.  Several years ago, I worked
> up an "electrode chiller" design where the electrodes would be of short,
> thick dimensions, set into a large copper or brass holder which would
> have a large capacity refrigeration coil embedded in it.  The idea was to
> remove as much heat from the electrodes as possible.  The stumbling block
> I ran into was rubber refrigeration hose is conductive, and with many
> thousands of volts on the electrodes, some way to insulate them from the
> cooling system is a must.
>   Has anyone run upon this concept, or have any ideas for insulating the
> electrodes?
> 
>  I realize this may not even be practical, it may not be able to
> dissipate the heat created in the electrodes fast enough.
> 
> Thoughts?
> 
> Coiling in Oklahoma
> 
> Kevin E.
> On Fri, 21 Jul 2000 17:35:44 -0600 "Tesla list" <tesla-at-pupman-dot-com>
> writes:
> >Original poster: JAMZZ333-at-aol-dot-com 
> >
> >I recently chilled my spark gap tips with with a butane gum remover DO 
> > NOT 
> >do this unless you have a fan to get rid of the butane gas or don't 
> >feel the 
> >need for hair on your arms or face (it is highly flammable as I am 
> >sure you 
> >know) any way for about 5 seconds when the coil is running before the 
> >tips 
> >heat themselves back up again I get about 20-25 percent longer 
> >streamers from 
> >the torrid which is the head of a dart ( have a rather small (TC) 
> >about a 
> >foot tall but anyway I thought it a bit odd anyhelp would be greatly 
> >appreciated. thanks -James
> >
> >
> >
> 
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