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Tempratech Self-Cooling Can
r.future writes "I saw on Gizmodo that a company called Tempratech has created an 100% safe and environmentally friendly aluminum can that uses a self-chilling process involving a cooling gel, desiccant, and heat sinks, to chill itself. The self-contained I.C. Can is the approximate size of a 500 mL beverage can. This includes the beverage container itself, and the integral self-chilling device, and according to Tempratech the can is 'proven to lower beverage temp by a minimum of 30 degrees Fahrenheit in only three minutes.'"
I thought this was going to be from the Self-heating Soup can guys, but it's not.
This one seems a little more real (not a case study), as the company already has some temp technology products that are further along... Also, the Gizmodo link says it holds 10oz.
If you check out the temp chart, it takes up to 13 minutes to reach full-cold temp. That means it would get colder as I drink my soda or whatever. That would be rather odd....I'm used to drinks getting warmer!
Moo.
Good stuff.
Two fish swim into a wall, one turns to the other and says, "Dam".
I've been toying with building my own single can cooler that would be usable for any 12 oz beverage can. Most of those car "refrigerators" use peltier modules to cool, but spread the thermal action across 6-12 cans. I was going to order just the module kit (from a place like http://electronickits.com/kit/complete/peltier/ck5 00.htm) and have one of the metal fabricators posted here a couple of weeks ago fabricate an aluminum sleeve with a plate and connect that assembly to the peltier module instead of the larger plate that the normal coolers would. You'd end up with a monstrocity that would slide over a single can and cool it down pretty quickly.
A revised design would turn it upside down, with the heatsink underneath and exhaust fans to dump out the heat, giving you more of a can holder instead of a can "hat", which would be more easily integrated into things like home theater seating or just an attractive housing for setting on your desk.
The Glass is Too Big: My Take on Things
connection to power in order to run the money-accepting process
The power required for cooling is MUCH greater than the power required to make change
There's not not much to save there compared to the cost of the special cans
I don't know how much the cans will cost, but the price reduction of mass production can be HUGE. Don't underestimate it.
How fast can you safely cool a carbonated soft drink? Seriously, there is a limit, but I'm not sure what it is.
You see, I once had a warm 12-pack of Dr. Pepper in the kitchen, and 20 liters of liquid nitrogen in the garage, and I was thirsty... anyway, I had the sense to only try one can at a time, and I opened the can first. Only took a few seconds to get it cooled down to a slushy consistency, but in the process half of the Dr. Pepper came foaming and frothing out the top of the can, ran down the sides, and froze into a solid block of carbonated foam.
The end result was drinkable, but a bit wasteful and really messy. Perhaps next time I'll just try the dry ice, but I really don't think the heat transfer rate is going to be enough.
Funny you mention that, since Aluminum recycling is one of the few materials that are actually cost-effective to recycle vs produce from raw ore. Most things, like PET plastic use more energy in the recycling process than manufacturing the things from scratch (once you include sorting and transportation costs, which are not insignificant).