[Amps] Distilled water in a dummy load ?

Joe nss at mwt.net
Sat Feb 13 12:24:17 EST 2021

But distilled water is highly corrosive.
I'd worry about what it may pull out of anything it touches.


On 2/13/2021 11:08 AM, Jim Thomson wrote:
> Is it possible to use  distilled water in a hb  dummy load ?
> DL  consist of  4 x  200 ohm globars, wired in parallel..in an 8 gallon container.
> I welded  4 x 3 inch OD  thick wall Alum pipes together, 2 stacked above 2.
> One resistor resides  dead center in each alum pipe.   Each resistor is a
> new  globar  type  SP,  12 inches long  x 1 inch in diameter.
> For the amount of brief testing I do, and sometimes with low duty cycles, sometimes
> high  duty cycles,   distilled water just might be  easier to  work with  vs xfmr oil.
> To be used from  160-10m,  no higher freqs.
> What I am worried about is the  dielectric constant of distilled  water.   That appears
> to be a lot higher than that of  xfmr  oil.   It could  add a bunch more stray  C  to the mix,
> esp with each resistor inside its own  alum pipe..and pipes welded.
> On paper,  distilled water  should be  able to extract heat a lot  better  than xfmr oil.
> Jim   VE7RF
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