On Wed, 14 Mar 2012 21:58:30 -0700, Winston
wrote:
Ed Huntress wrote:
On Wed, 14 Mar 2012 20:25:39 -0700,
wrote:
wrote:
On Mar 14, 4:54 pm, Ecnerwal
wrote:
If it were a one-day deal or the like, I'd agree with you, but I'd
choose refrigeration in a heartbeat for any regular use. I'm intimately
aware of the hassles of salt-ice refrigeration, and I'm quite certain
that if I were making ice cream and sorbet as a busness rather than for
myself, it would be an easy decision to spend the money for a
refrigerated mixer - for home use it's a lot of money, so I use salt and
ice.
Another approach would be to use a solid state cooler and a bit of
compressed air.
Peltier Junction Thermo Electric Heat Pump
One could refrigerate a jug of water for a few days
then use it as a heat sink for the copper tube.
That'd be inefficient but it might be cheaper
because it would eliminate the trip to the store
for bags of ice.
Who needs a store? I make my own ice in a little stand-up freezer. In
the summer, when I'm fishing, I make about 10 to 20 pounds of it every
couple of days.
Like this?
http://www.compactappliance.com/Avan...ances-Freezers
Yeah. Mine's a little bigger -- around 4 ft^3 -- but that one should
do it. BTW, mine has run without a hitch for 32 years. Sears.
Nifty! And probably a *lot* more energy efficient than the Peltier.
Probably. (Remind me to tell you about the piece of research
equipment, using semiconductor Peltier chips, that I built for Japan's
MITI back in the '80s. Bridgeport, South Bend lathe, and ancient
Walker Turner drill press, and the thing went to Japan's research
agency for OTEC. g)
So, locate a square 10 gallon bucket, submerge coil, fill with water
and place it in the freezer. Figure out a pump to keep the drip leg
dry and Bob's your Uncle.
--Winston
I'd be wary of doing it that way. The coil would develop a blanket of
water around it and the conductivity from the ice would be
problematic.
If it's enough chilling, great. Otherwise, I'd break the ice into
chunks and toss them in the bucket.
--
Ed Huntress