On 21-Feb-2006, "Mark R" > wrote:

> > When Scott pointed out that, without a pump, the amount of pipe within
> > the fermenter may not be adequate for the amount of heat to be moved, he
> > may well have hit the nail on the head, but I'd like to see if I can
> > locate some precise figures or a formula or something like that. That
> > was one of the main questions that I'm researching -- how efficient is a
> > heat pipe, and how can I build or acquire one if one should work? The
> > question has never, in my mind, been about the peltier.
> >
>
> If you're interested in peltier cooling somebody pointed out this product
> a
> while back and you could skip the need for a heat pipe. I even emailed the
> company asking about price but it was a bit more than I was interested in
> spending. If I read their info correctly it looks like one would chill a 5
> gal batch about 10 degrees below ambient. I could hit 65 degrees easy with
> that mounted into the side of my fermenter.
> http://www.coolworksinc.com/coolworks_products.htm
>
> Mark R

I bought a peltier cooling module from these people at
http://www.mpja.com/listitems.asp?dept=60. Some day (when I get around to
it), I'm gonna build an insulated box for my fermenter, and use this thing
to cool it (or rather keep it at a cooler temperature).

If I recall correctly, these things only move abot 80-90 BTU/HR. That would
be OK to maintain a lower temperature, but wouldn't do much to cool hot wort
(that's about the same as adding 3/4 lb of ice every hour).

-Hershel