Collaborate Disseminate
There’s nothing more pleasing on a hot day than an ice-cold beverage. While the vast majority of us have a fridge in the kitchen, sometimes it’s desirable to have a …read more Continue reading DIY Mini Fridge Is Pure Brilliance In Foam
Freezers are highly useful devices. You can preserve food, stop a dead animal from stinking out your apartment, and keep your vodka at the optimal drinking temperature. Of course, most of us bought ours from the local whitegoods store, but [Tech Ingredients] set out to build his own (YouTube, embedded …read more
Continue reading Build Your Own Freezer With Thermoelectric Coolers
Remember when a homemade cloud chamber was a science fair staple? We haven’t participated for decades, but it seemed like every year someone would put a hunk of dry ice in a fish tank, add a little alcohol, and with the lighting just right – which it never was in the gymnasium – you might be lucky enough to see a few contrails in the supersaturated vapor as the occasional stray bit of background radiation whizzed through the apparatus.
Done right, the classic cloud chamber is a great demonstration, but stocking enough dry ice to keep the fun going is …read more
Continue reading See the Radioactive World with This Peltier Cloud Chamber
[Pabr] is trying to make dry ice the hard way by building a thermoelectric dry ice generator. The project is a well planned round trip through thermodynamics and cryogenics with a hard landing on the icy grounds of trial and error.
While dry ice can be obtained with simpler methods, for example by venting gaseous CO2 from fire extinguishers and collecting the forming CO2 flakes, [pabr’s] method is indeed attractive as a more compact solid-state solution. The setup uses a four stage Peltier element, which uses four Peltier stages to achieve a high temperature differential. With sufficient cooling on the …read more
Continue reading Thermoelectric Dry Ice Generator Does Not Work (Yet)