Need science refresher

[xoxoxoBruce]

Originally Posted by richlevy

It's really nice that someone else has done the leg work and field tested it. Unfortunately, the review states that it would take an inordinate amount of time to cool a warm can.

For $4 each you can get two more to cool your heels while you wait.

[BrianR]

I have the same one that fargon had. I took a broken one apart to see what made it tick and it sounds just like yours, only larger. It does a fair job of cooling sodas and other drinks but milk doesn't stay fresh for more than 48 hours. Cheese and cold cuts fare better but need to be eaten within a week.

It should do a decent job of cooling a can but it will take a while, especially if the can is warm, precooling works best.

[tw]

Originally Posted by HungLikeJesus

It probably has a Peltier Junction, or other thermoelectric device, in the metal plate in the bottom.

Meanwhile a recent innovation from Intel. A peitier junction was successfully applied to a semiconductor. It does not work efficiently on the entire chip. But by identifying selected hot spots, the junction is located below that hot spot for selective cooling.

Intel created a hot spot of 1300 watts per square cm, and cooled it with a mircrosized junction constructed from bismuth, tellurium, antimony, and selenium. Well at least some companies are trying to maintain the American standard of living.