[Amps] SS amps watercooling - was PowerGenius XL

Joe nss at mwt.net
Tue Mar 7 09:03:48 EST 2017

In the big Eimac water cooled tubes, what and how did they use liquid 

The Original Rolling Ball Clock
Idle Tyme
On 3/7/2017 3:43 AM, Roger (K8RI) wrote:
> Sorry, but that is not true.  I too used to think of distilled water 
> as being neutral, but, "pure, distilled water is highly corrosive and 
> will suck up metallic ions like mad.
> Water is one of the best mediums for heat transfer, however, tap water 
> would work well in a SS amp with the heat sink/spreader at chassis 
> ground potential. Tap water would not wok in a tupe amp where it has 
> to cool the anode of a tube at a high potential.
> I worked with this stuff (DI & Distilled)  for close to 20 years.
> 73
> Roger (K8RI)
> On 3/6/2017 10:12 AM, Al Kozakiewicz wrote:
>> Distilled water is deionized by definition.  Ions have a much lower 
>> vapor pressure than H2O and thus aren't boiled off in the process. 
>> Distillation is a common way of producing deionized water.
>> Water is not "highly corrosive". It has a pH of 7 - completely 
>> neutral. If the water being distilled has corrosive contaminates 
>> whose vapor pressure is greater than water, then the distillate will 
>> have them too, but since the VP of water is already higher than the 
>> mineral salts that are the typical corrosives, the most likely 
>> contaminates are organic.
>> This anecdote has some more complicated explanation than "distilled 
>> water is highly corrosive".
>> Al
>> AB2ZY
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