[time-nuts] poor-man's oven

[Bob kb8tq]

Hi

Many times people underestimate the amount of heat sinking required with a TEC. If you get into fans, they 
introduce a whole new set of issues ….It’s not just the heat you are getting out of the “oven”. The TEC it’s self
makes a pretty good thermal short (compared to foam insulation). You have to “pump” across that as well. 

Bob

> On Jun 4, 2017, at 9:38 PM, Ellen Franke <jmfranke at cox.net> wrote:
> 
> My concern with using a TEC is that, heating or cooling, you are left with one cold surface and that surface will collect condensation which is a source for corrosion.
> John WA4WDL
> 
> 
>> On June 4, 2017 at 8:12 PM Attila Kinali <attila at kinali.ch> wrote:
>> 
>> 
>> Moin Chris,
>> 
>> On Sun, 4 Jun 2017 13:49:29 -0700
>> Chris Albertson <albertson.chris at gmail.com> wrote:
>> 
>>> We used the pelter because we preferred a cool "oven" to a hot one.   The
>>> theory has that we get less electronic noise so we ran the TEC in cooling
>>> mode.   But for your use a resistive heater would be cheaper.   But in
>>> either case you see a coffee mug with a round chunk of Al shoved in and
>>> heat sink fins showing.
>> 
>> What is the reason why you'd expect less noise with a TEC?
>> 
>> 			Attila Kinali
>> 
>> -- 
>> You know, the very powerful and the very stupid have one thing in common.
>> They don't alters their views to fit the facts, they alter the facts to
>> fit the views, which can be uncomfortable if you happen to be one of the
>> facts that needs altering.  -- The Doctor
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