On 6/27/07, Russell McMahon <apptech@paradise.net.nz> wrote:
> >>If you need to go VERY low then a Peltier device may not have enough
> >>power. What is your target temperature range?
> >
> > If you need more delta T then stacked Peltiers are a possiblity.
> > This is what we use for over temperature testing in production (way
> > faster than the environmental chambers we used to use).
>
> Stacked Peltiers do give extra temperature differential but at a
> substantial decrease in Watts of cooling as you use N layers and a
> reducing delta T per layer. For cooling you can get up to 6 layers (I
> think I've seen)

What do you mean by 6 layers ? 3 or 6 stacked elements ?

Vasile
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