[Amps] water purity/conductivity in water cooled, tube, > amplifiers

[Donald Fox]

Kim:

You are correct. Years ago, the radiators and heater cores were brass or copper. They could be repaired by soldering if the damage was not too extensive.
These days, the manufacturers are more concerned with less weight and cost, so they use an aluminum core with plastic for the side tanks that are crimped on with a rubber gasket in between.

Plastic would not conduct the heat from the anti freeze into the air passing around/through it.

Don   N8ECH


--------------------------------------------
On Tue, 4/24/18, Kim Elmore <cw_de_n5op at sbcglobal.net> wrote:

 Subject: Re: [Amps] water purity/conductivity in water cooled, tube, > amplifiers
 To: "Randy" <randy at verizon.net>
 Cc: amps at contesting.com
 Date: Tuesday, April 24, 2018, 9:58 AM
 
 I don’t think this is correct.
 Every one I’ve ever seen is now aluminum. 
 
 Kim N5OP
 
 "People that make music together cannot be
 enemies, at least as long as the music lasts." -- Paul
 Hindemith
 
 > On Apr 23,
 2018, at 22:33, Randy <randy at verizon.net>
 wrote:
 > 
 >> On
 4/23/2018 9:28 AM, amps-request at contesting.com
 wrote:
 >>
 ----------------------------------------------------------------------
 >> 
 >> 
 >> I know that really pure water is
 actually corrosive and will do it's
 >> best to gain ions in order to get to
 some natural level of
 >>
 minerals/contaminants.??? I built the coolers out of several
 pieces of
 >> brass and hard silver
 brazed it all together.? I know the electrical
 >> current will cause an etching or
 eroding effect of the materials in the
 >> cooler, but I used what I had.?? At
 this point, I have no idea how often
 >> I will changing? out the water.? Could
 be after only 10 hours of use, or
 >>
 it may be 100 hours and the cooler may rot out in no
 time.
 >> 
 >> 
 >> ------------------------------
 >> 
 >> 
 > Just wondering out loud... I'd bet
 some cars have either all-plastic radiators, or, maybe
 plastic heater cores for the A/C. Maybe that would remove
 the issues of metal ions from the heat-exchanger.
 Undoubtedly less efficient at removing heat from the water
 than metal, but size cures a lot of ills.
 > 
 > 
 > Randy
 > KZ4RV
 > 
 >
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