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

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Subject: [Amps] water purity/conductivity in water cooled, tube
From: "Jim Thomson" <>
Date: Sat, 28 Apr 2018 10:49:54 -0700
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Date: Tue, 24 Apr 2018 08:58:05 -0500
From: Kim Elmore <>
To: Randy <>
Subject: Re: [Amps] water purity/conductivity in water cooled, tube, >

<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

<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 
with hot coolant eventually leaking where the plastic end tanks morph into the 

##  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   

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