Here is a URL for a site titled: "Vacuum Tube Liquid Cooling System" by
Bill Jones, K8CU,: http://www.realhamradio.com/liquid-cooling.htm He
discusses cooling fluid, etc.
Scott McGrath wrote:
> Mineral oil works well - high thermal conductivity and a insulator as well
>
> Harold Mandel wrote:
>
>> Fletch,
>>
>> The subject of cooling fluids was covered in this
>> reflector not too long ago under the topic of
>> water-cooled RF dummy loads such as the Bird
>> Econoload series.
>>
>> The bullet points were:
>>
>> 1. Ordinary tap water
>> 2. Distilled water
>> 3. Purified water
>> 4. Ethylene Glycol/Distilled water tinctures
>> 5. Antifungal treatments in solutions
>>
>> Different manufacturers have different recommendations.
>>
>> W9AC runs a Stanley Steamer and has had that in good
>> condition for many years, so you might ask him what
>> coolant he is happy with.
>>
>> I run a 50KW Econoload/Calorimeter, and use
>> Zephyr Hills Reverse-Osmosis purified drinking
>> water and Wal-Mart poolside antifungal treatment
>> in a 0.05% tincture with no deleterious effects
>> on conductivity.
>>
>> Since your rig will probably never be below
>> freezing, forget antifreeze.
>>
>> Hal Mandel
>> W4HBM/4
>>
>>
>>
>>
>> {snip}
>> I am in the process of getting a water cooled
>> GS-15B cavity on line and I wonder if the
>> group has any recommendations on coolants.
>> {snip}
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>>
>>
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>
--
73,
Mike, K4GMH
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