Slashdot Mirror
PeltierBeer
Helstein writes "Finishing a beer in the sun before it gets warm is usually not a problem, but what about those really hot days? Having some hardware lying around there is only one solution to keep the beer cool, that's to make a PeltierBeer."
a beowolf cluster of these!
Jebus, all the time spent building that thing could have been spent drinking...MORE BEER!
See also the jet-powered beer cooler.
Why do I remember that? <sigh>
that their research seems to have missed:
Guinness is supposed to be drunk at room temp not 8-10 Deg C.
<doh>
Linux is Linux, if One need clarify their dist: <Dist>/GNU Linux
bsds are of course just BSD
Remember, a peltier works both ways. Meaning i can keep my beer nice and hot for those cold winter nights!
Carpe meam simiam!
but what about those really hot days?
Solution: drink faster.
Brilliant!
I think a setup like this should be mandatory at any professional workstation of all IT staff everywhere. Think of how productivity will increase!
Dude, where's my packet?
his beer gets cold. He spends way too much time thinking instead of drinking.
My wife viewed this and asked why in the world someone would make that. I had to explain that we geeks get a kick out of doing stuff like this, just for the sake of doing it. This particular project would be even cooler (no pun intended) if that cat5 carried some information instead of just power. That way, maybe I could track which friends are drinking all my beer. :)
You have enemies? Good. That means you've stood up for something, sometime in your life. --Winston Churchill
Seriously though, great design. And probably no heavier than a decent beer stein.
WHERE'S MY BEER STEIN?!?!?!?
You are not the customer.
Ok, let me get this straight, he's running 12v down a regular ol', totally otherwise normal, completely unmarked, grey piece of unassuming CAT5 cable...
How long until something releases its magic blue smoke?
Blockwars: go play.
"They do not preach that their god will rouse them, a little before the Nuts work loose." Kipling, 'The Sons of Martha'
yes women wear them too, but really whats more important, cool beer, or brests? hmm... on further consideration, that is a hard one.
I want 2D games back.
Have it monitor the level of the liquid in the glass, and have it send a page or IM to your wife to bring you another before you finish the first one.
Now THAT would be truly useful!
The sort that you get in a pub, not the sort that you get in a can or bottle. Most pubs in Ireland serve Guinness either at room temperature or slightly chilled (around 12 C / 53 F).
10 PRINT CHR$(205.5+RND(1)); : GOTO 10
Forget all kinds of contraptions. There is this thing called a bar. You go in there, get a Guinness, drink it, get another, drink it, get another, drink it, get another, drink it, get another, drink it, get another, drink it, get another, drink it, get another, drink it, get another, drink it, get another, drink it, get another, drink it, get another, drink it, get another, drink it, and eventually run out of money and go back home. That's the way to live a happy life.
If that Cat5 carried data, you maybe could get Root on someone's beer...
...there's a reason he doesn't post any real data regarding how much colder it kept the beer than without the cooler.
I quote from the last page of his site, which was not at all difficult to miss if you rtfa - " The temperature in the glass was roughly 22C before I poured in the beer. The beer is from the fridge and has a temperature of 8C." and then "The temperature stabilized around 7C."
These comments on the temperatures being interspersed with pictures of the thermostat showing it in action.
Granted, he doesn't talk about the performance before hand, but since the first picture shows a baseline of 19 C outside and the temperature stabilzied colder than fridge temperature, I'm assuming it was quite effective.
"This is Zombo Com, and welcome to you who have come to Zombo Com" - www.zombo.com
The thickness of the base of the glass could affect the ability to cool it. Also charging batteries generate heat.
Hi, MacDork. Yes, your understanding of thermodynamics is probably ok. It's your ability to read the article and grok it that's coming up short.
He used a Peltier junction. Look it up. It's an active, solid-state, heat transfer device. It can move heat against the thermal gradient, when supplied with power.
IOW, run current through a Peltier and one side gets colder than ambient, and the other side gets warmer. Reverse the current, reverse the effect. Add a fan to the hot side to get rid of the heat, because they are limited to a max temp differential between the sides.
Ce n'est pas un vrai mouvement de robot!
Ales in the british tradition are typically served at "cellar" temps -- around 55F-60F. Continental lagers are best a little colder but generally not below 45F. A few belgian styles do better even colder, but never ice cold (38-45F).
If served ice cold, beer tends to lose most of it's flavor and seems thinner. The same is also true to a lesser extent with increasing carbonation. In the case of an american pilsener like bud, you're not missing much if the beer is ice cold. In the case of a fine czech pilsener like Budvar, you'd be missing a lot.
Roving Web-Teleoperated Robot
Run the outfit from photoelectric cells - more sunlight, more cooling!
For us beer geeks we would just drink beer in the sun faster. UV rays is what skunks beer.
UV interacts with the alpha acids from the hops and creates that "skunky" taste. This is why most beer bottle are brown, it blocks out most of the UV for a period of time.
This page does a a decent job of explaining what happens.
Nonetheless, this is a cool hack. Just drink it fast or leave it in the bottle/can.
Lets try this again, this time in a browser that supports cookies. :)
I read the article. He doesn't post any concrete numbers comparing it when the device is not powered.
Also, with the sensor on the peltier itself, it indicates little about the temperature of the liquid. That's like putting a thermometer on your heater and saying room temperature is 120 degrees.
I've done the research and the math regarding building a similar device, and I believe the conclusion I came to was that it would require something like ten 70 watt peltiers to move the temperature of 12 ounces of fluid a few degrees per minute. That's 700 watts before you even count the power needed for all the fans to cool the hot side of the peltiers.
I've had enough abrasive sigs. Kittens are cute and fuzzy.
This thing couldn't work in a million years.
/. troll of the year.
The thermometer isn't in the beer, it's hooked directly to the copper plate atop the peltier device.
Without a crystal goblet and gobs of thermal goop, he's going to cool his thermometer probe and some air and not much else. Actually, he should just leave the beer in the can. Aluminum has a thermal conductivity of 205 W/m-K, and glass does 0.8 W/m-K. The thinner can* and 250X increase in k will make his project more successful, but still a candidate for
I'd be willing to bet that the metal rails of that "caffetiere" are transmitting more heat to the sides of the glass than the copper plate is taking from the base.
* - say the base of his glass is 4 mm thick, and the can is 0.2 mm thick (it could be less), then the glass will have a thermal conductance of 200 W/K and the can will have a thermal conductance of 1.03e6 W/K.
We always use stubbie holders. Stubbies are single serve glass bottles, somewhat larger than your can-sized serve usually.
RM Williams Oilskin stubbie holder
Axeman's stubbie holder Note unlike the photo, the whole can fits snuggly inside the neoprene (think wetsuit rubber).
In the tropics they take keeping your beer cold seriously:
stubbie holders, sixpack holders, You can even stick whole wine bottles into some of these.
The hard plastic and polystyrene sort. Buy a boat to hold your beer?
By the way, if there's foam in that bra, you're probably getting less than you bargained on. Real women don't need or want padding. Although occasionally I'd bet they'd like hard shielding from octopi disguised as men.
-- it must be true, it's on the internet.
I saw that RJ45 connecting up with a CAT5, and before I read the caption, I thought, "wow, he even gave an IP address to his beer."
This sig no verb.
The Afrotech Ghetto Hardware Fun site has early, failed experiments in peltier beverage cooling, with dangerous results! He almost had it right in his second experiment though...
To not even know how to spell "breast"
Even if a man chops off your hand with a sword, you still have two nice, sharp bones to stick in his eyes.