Date: Tue, 24 Apr 2018 08:58:05 -0500
From: Kim Elmore <cw_de_n5op@sbcglobal.net>
To: Randy <randy@verizon.net>
Cc: amps@contesting.com
Subject: Re: [Amps] water purity/conductivity in water cooled, tube, >
amplifiers
<I dont think this is correct. Every one Ive ever seen is now aluminum.
> 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
<Kim N5OP
## No such thing as an all plastic radiator, does not exist.
However I have seen aluminum radiators, that have plastic, vertical end tanks,
used for eng rads. These have fallen out of vogue, nothing but endless
problems
with hot coolant eventually leaking where the plastic end tanks morph into the
aluminum
cores.
## Plastic is useless at radiating heat. It does the opposite, holds heat
in.. An all copper
radiator would be the ultimate ticket, but cost prohibitive..and almost triple
the weight of
aluminum. Aluminum only conducts heat 57 % vs copper. Thats why copper
spreaders are used
for final pa transistors, where the cu spreaders mate to the aluminum finned
heat sink.
Jim VE7RF
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|