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 No more "Dummy Loads". And questions on them

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FrankB
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Join date : 2010-11-22

PostSubject: No more "Dummy Loads". And questions on them   2014-09-12, 9:15 pm

In keeping with todays 'Political Correctness" we may no longer deem them "Dummy Loads', but must now call them "Disadvantaged Antennas". Razz

There, that being said has anyone done a study on which medium dissipates heat in them the best?

I have heard of folks using: transformer oil, 30W, cooking oil, ATF, & 90W.

I suspect there are other fluids that would work also.

I had built a couple of audio loads in 1 gallon paint cans, and am trying to decide which medium would dissipate heat the best.
(Yes, I am planning on putting a pressure vent on top of the cans too. I don't need them 'sploding all over the garage.
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Cliff Jones
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PostSubject: Re: No more "Dummy Loads". And questions on them   2014-09-14, 1:10 pm

Of course water is the best medium for cooling, but its conductive, I have heard that distilled water has no metals, but there is another water called heavy water that is put to use in nuclear heat exchangers, and even used in coil designs for metal detectors.
But those are impractical

I guess you could do a search on best heat transference, I would think maybe motor oil. just because of its properties for heat in auto engines. Also mineral oil.

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