[Amps] Distilled water in a dummy load ?

[Fuqua, William L.]

You know that radiator coolant that Jack Leno talks about that is non-corrosive? I looked into it and found that it has half the heat capacity of water. It would be a good choice for cantenna perhaps, high boiling point and non-flamable and easy to clean up. I did not keep track of this discussion but what about dielectric constants?
73
Bill wa4lav

________________________________
From: Amps <amps-bounces at contesting.com> on behalf of Haring family <dcharing at gmail.com>
Sent: Monday, February 22, 2021 12:43 PM
To: Amplifiers <amps at contesting.com>
Subject: Re: [Amps] Distilled water in a dummy load ?

CAUTION: External Sender


Jim,

Not speaking to corrosion, but to heat exchange: the water clearly will be
better, presuming you have corrosion control managed (i.e. no
fouling/corrosion products which reduce heat transfer.

regards,

Dave N3AC

On Sun, Feb 21, 2021 at 3:46 PM MU 4CX250B <4cx250b at miamioh.edu> wrote:

> My instinct is that mineral oil would be a better coolant than
> distilled water, with no corrosion issues.  You can buy it at any
> pharmacy, and while it isn’t rated at quite as high a temperature as
> transformer oil, it works quite well. I used it in a Cantenna for 30
> years! As I recall, it was recommended byHeathkit  as a substitute for
> transformer oil.
> 73,
> Jim w8zr
>
> Sent from my iPhone
>
> > On Feb 21, 2021, at 1:35 PM, Geert Jan de Groot <pe1hzg at xs4all.nl>
> 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.
> >
> > Personally, I'm using the Ameritron ADL2500, which is 4 hefty resistors
> in a case with a fan. I modified it so it automatically switches the fab to
> reduce the noise.
> >
> > No leakage, no corrosion, no mess if I drop it or I kick it. Much
> lighter. No dangerous oils, and my shack doesn't smell like a chip shop
> when I'm doing some testing.
> >
> > 73, Geert Jan PE1HZG
> >
> >
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