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@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
>
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|