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Instant Cooling to 35deg.F
I am looking for a means to instantly cool a can of beer to 35deg. F.
When I go camping. On hot summer days I like to go camping and sit back to some very cold beers. I am the type of person whose job responsibilities tend to fluctuate every day based on the weather and other conditions. Therefore, I may discover at any time that there won't be any work for the next few days. That's when I take off to go camp at one of my favorite woods, and that could be any day of the week, not just holidays or weekends. When I leave to the campsite I make a grocery and beer run, pack my cooler, hook up my camping trailer and within a few hours I am heading off to camp. The problem is that when I get to camp, my beer is never really cold. It sits in some ice for an hour or two and does not get cold enough in such short time. I dont normally keep beer in the fridge at home because I dont drink when I am working and it never fails someone else will drink it before I am ready to go camping. Otherwise I'd keep some right under the freezer compartment. With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. I am aware that there are certain gases that cause ice to form on a tank. For example, using a disposible propane cylinder will form ice on the cylinder when the gas is released quickly (like when I use my big weed burner torch). I know there are other gases such as nitrogen or is it hydrogen that can have this same effect. My question is what can I use that is readily available, not extremely expensive, safe to use, and will chill the can in seconds? The other question is how to use the stuff in a portable environment. In other words, something I can carry in my camper that simply involves using a hose, some sort of cooling container for the beer can, and simply means turning on a valve, giving me an ice cold beer in a minute or less. Remember, it must be safe and something I can legally carry in a vehicle without using up too much space. All useful advice appreciated. George |
Instant Cooling to 35deg.F
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Instant Cooling to 35deg.F
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Instant Cooling to 35deg.F
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Instant Cooling to 35deg.F
dpb wrote:
wrote: ... With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. ... Ain't gonna happen. In those hours you're getting ready add in a trip by the store and start w/ chilled would be far cheaper and simpler than all the b/s you're proposing. This reeks of "troll"... -- More like a feeble attempt at viral marketing for the one minute beer can chiller ($68) after a 5 second Google search for "beer can chiller." Either that or he's just too lazy, and I've gone and done the work for him. No I haven't, I'm not posting the URL this time. -- Grandpa |
Instant Cooling to 35deg.F
i remember.
The cooler with Ice and rock salt got the beer the coldest quickest. |
Instant Cooling to 35deg.F
season 1 of mythbusters has it. ITs out on DVD
wrote in message ups.com... i remember. The cooler with Ice and rock salt got the beer the coldest quickest. |
Instant Cooling to 35deg.F
My question is what can I
use that is readily available, not extremely expensive, safe to use, and will chill the can in seconds? Immerse in *drained* ice or snow and spin. Maintain *pressure* of ice against can. Drain the melt. *Spin* the can about 60 rpm with your hand. This gets you below 40 deg F in a minute. You must maintain the pressure and drain the melt, or you spoil the heat transfer. The intimate contact with a phase-change substance is critical. |
Instant Cooling to 35deg.F
On Aug 29, 11:41 am, dpb wrote:
wrote: ... With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. ... Ain't gonna happen. In those hours you're getting ready add in a trip by the store and start w/ chilled would be far cheaper and simpler than all the b/s you're proposing. This reeks of "troll"... -- I don't know where this guy lives that he can't buy cold beer. That would suck. Here's a good drinking game. Take a drive around any WV town and drink every time you see a sign that says "Cold Beer" (usually hand painted). Just keep it low when the cops go by. Anyway, even room temp beer will get ice cold in a couple of hours. Use more ice. |
Instant Cooling to 35deg.F
On Aug 29, 10:37 am, wrote:
I am looking for a means to instantly cool a can of beer to 35deg. F. When I go camping. On hot summer days I like to go camping and sit back to some very cold beers. I am the type of person whose job responsibilities tend to fluctuate every day based on the weather and other conditions. Therefore, I may discover at any time that there won't be any work for the next few days. That's when I take off to go camp at one of my favorite woods, and that could be any day of the week, not just holidays or weekends. When I leave to the campsite I make a grocery and beer run, pack my cooler, hook up my camping trailer and within a few hours I am heading off to camp. The problem is that when I get to camp, my beer is never really cold. It sits in some ice for an hour or two and does not get cold enough in such short time. I dont normally keep beer in the fridge at home because I dont drink when I am working and it never fails someone else will drink it before I am ready to go camping. Otherwise I'd keep some right under the freezer compartment. With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. I am aware that there are certain gases that cause ice to form on a tank. For example, using a disposible propane cylinder will form ice on the cylinder when the gas is released quickly (like when I use my big weed burner torch). I know there are other gases such as nitrogen or is it hydrogen that can have this same effect. My question is what can I use that is readily available, not extremely expensive, safe to use, and will chill the can in seconds? The other question is how to use the stuff in a portable environment. In other words, something I can carry in my camper that simply involves using a hose, some sort of cooling container for the beer can, and simply means turning on a valve, giving me an ice cold beer in a minute or less. Remember, it must be safe and something I can legally carry in a vehicle without using up too much space. All useful advice appreciated. George Dry ice (frozen co2). |
Instant Cooling to 35deg.F
Grandpa wrote:
dpb wrote: wrote: ... my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. ... Ain't gonna happen. Starting at 70 F in an ice bath, a 12 oz 2.5"x5" beer can with 0.34 ft^2 of surface and 2 30 Btu/h-F-ft^2 natural convection water conductances in series and RC = 2/(0.34x30)x12/16 = 0.147 hours (8.8 minutes) would cool to 35 in -8.8ln((35-32)/(70-32)) = 22 minutes. Spinning the can to raise the conductances by a factor of 20 would make this 1.1 minutes. Adding 30% calcium chloride to lower the ice temp to -50 F would make this 0.44ln((35-(-50))/(70-(-50)) = 0.15 minutes, ie 9 seconds. More like a feeble attempt at viral marketing for the one minute beer can chiller ($68) after a 5 second Google search for "beer can chiller." The $10 Tinchilla looks interesting... Nick |
Instant Cooling to 35deg.F
Richard J Kinch wrote:
You must maintain the pressure and drain the melt, or you spoil the heat transfer. The intimate contact with a phase-change substance is critical. Or you could just add a bunch of salt to the ice, thus lowering the freezing point of the mel****er. This allows for better contact with the can as there are no air pockets. A saturated sal****er solution will get to -20C or -4F. Plenty cold enough to chill your beer. Chris |
Instant Cooling to 35deg.F
"frank megaweege" wrote in message oups.com... On Aug 29, 11:41 am, dpb wrote: wrote: ... With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. ... Ain't gonna happen. In those hours you're getting ready add in a trip by the store and start w/ chilled would be far cheaper and simpler than all the b/s you're proposing. This reeks of "troll"... -- I don't know where this guy lives that he can't buy cold beer. That would suck. Here's a good drinking game. Take a drive around any WV town and drink every time you see a sign that says "Cold Beer" (usually hand painted). Just keep it low when the cops go by. Anyway, even room temp beer will get ice cold in a couple of hours. Use more ice. Where I live the Beer Stores are refrigerated, the staff wears winter clothing even in the heat of summer, but the important part is all the beer is always cold in the store. |
Instant Cooling to 35deg.F
On Aug 29, 11:37 am, wrote:
I am looking for a means to instantly cool a can of beer to 35deg. F. When I go camping. On hot summer days I like to go camping and sit back to some very cold beers. I am the type of person whose job responsibilities tend to fluctuate every day based on the weather and other conditions. Therefore, I may discover at any time that there won't be any work for the next few days. That's when I take off to go camp at one of my favorite woods, and that could be any day of the week, not just holidays or weekends. When I leave to the campsite I make a grocery and beer run, pack my cooler, hook up my camping trailer and within a few hours I am heading off to camp. The problem is that when I get to camp, my beer is never really cold. It sits in some ice for an hour or two and does not get cold enough in such short time. I dont normally keep beer in the fridge at home because I dont drink when I am working and it never fails someone else will drink it before I am ready to go camping. Otherwise I'd keep some right under the freezer compartment. With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. I am aware that there are certain gases that cause ice to form on a tank. For example, using a disposible propane cylinder will form ice on the cylinder when the gas is released quickly (like when I use my big weed burner torch). I know there are other gases such as nitrogen or is it hydrogen that can have this same effect. My question is what can I use that is readily available, not extremely expensive, safe to use, and will chill the can in seconds? The other question is how to use the stuff in a portable environment. In other words, something I can carry in my camper that simply involves using a hose, some sort of cooling container for the beer can, and simply means turning on a valve, giving me an ice cold beer in a minute or less. Remember, it must be safe and something I can legally carry in a vehicle without using up too much space. All useful advice appreciated. George http://kwc.org/blog/archives/2005/20...d_edition.html |
Instant Cooling to 35deg.F
|
Instant Cooling to 35deg.F
On Aug 29, 10:37 am, wrote:
I am looking for a means to instantly cool a can of beer to 35deg. F. When I go camping. On hot summer days I like to go camping and sit back to some very cold beers. I am the type of person whose job responsibilities tend to fluctuate every day based on the weather and other conditions. Therefore, I may discover at any time that there won't be any work for the next few days. That's when I take off to go camp at one of my favorite woods, and that could be any day of the week, not just holidays or weekends. When I leave to the campsite I make a grocery and beer run, pack my cooler, hook up my camping trailer and within a few hours I am heading off to camp. The problem is that when I get to camp, my beer is never really cold. It sits in some ice for an hour or two and does not get cold enough in such short time. I dont normally keep beer in the fridge at home because I dont drink when I am working and it never fails someone else will drink it before I am ready to go camping. Otherwise I'd keep some right under the freezer compartment. With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. I am aware that there are certain gases that cause ice to form on a tank. For example, using a disposible propane cylinder will form ice on the cylinder when the gas is released quickly (like when I use my big weed burner torch). I know there are other gases such as nitrogen or is it hydrogen that can have this same effect. My question is what can I use that is readily available, not extremely expensive, safe to use, and will chill the can in seconds? The other question is how to use the stuff in a portable environment. In other words, something I can carry in my camper that simply involves using a hose, some sort of cooling container for the beer can, and simply means turning on a valve, giving me an ice cold beer in a minute or less. Remember, it must be safe and something I can legally carry in a vehicle without using up too much space. All useful advice appreciated. George Or pretend you're in England and drink warm beer. |
Instant Cooling to 35deg.F
clifto wrote:
wrote: Adding 30% calcium chloride to lower the ice temp to -50 F would make this 0.44ln((35-(-50))/(70-(-50)) = 0.15 minutes, ie 9 seconds. You're saying that dissolving calcium chloride is endothermic? No. What he meant was that the calcium chloride would allow the ice to become liquid at -50F. This would give an icewater bath. Pure ice at -50F would be solid, and wouldn't conduct nearly as well due to air pockets around the can. However, good luck finding a freezer that will give you ice at -50F... Chris |
Instant Cooling to 35deg.F
Chris Friesen wrote:
clifto wrote: wrote: Adding 30% calcium chloride to lower the ice temp to -50 F would make this 0.44ln((35-(-50))/(70-(-50)) = 0.15 minutes, ie 9 seconds. You're saying that dissolving calcium chloride is endothermic? No. What he meant was that the calcium chloride would allow the ice to become liquid at -50F. This would give an icewater bath. Pure ice at -50F would be solid, and wouldn't conduct nearly as well due to air pockets around the can. However, good luck finding a freezer that will give you ice at -50F... I guess the far North or South in their respective winter seasons get there on occasion...maybe OP should change his destination. :) -- |
Instant Cooling to 35deg.F
Chris Friesen wrote:
clifto wrote: You're saying that dissolving calcium chloride is endothermic? No. What he meant was that the calcium chloride would allow the ice to become liquid at -50F. This would give an icewater bath. Pure ice at -50F would be solid, and wouldn't conduct nearly as well due to air pockets around the can. However, good luck finding a freezer that will give you ice at -50F... That's what I figured. -- Tiger Direct forcibly checking receipts? http://tinyurl.com/2hz3ht |
Instant Cooling to 35deg.F
On Aug 29, 8:28 am, frank megaweege wrote:
On Aug 29, 11:41 am, dpb wrote: wrote: ... With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. ... Ain't gonna happen. In those hours you're getting ready add in a trip by the store and start w/ chilled would be far cheaper and simpler than all the b/s you're proposing. This reeks of "troll"... -- I don't know where this guy lives that he can't buy cold beer. That would suck. Here's a good drinking game. Take a drive around any WV town and drink every time you see a sign that says "Cold Beer" (usually hand painted). Just keep it low when the cops go by. Anyway, even room temp beer will get ice cold in a couple of hours. Use more ice. You need ice and water for the instant beer cooler. That makes a lot of sense.... |
Instant Cooling to 35deg.F
On Wed, 29 Aug 2007 10:41:37 -0500, dpb wrote:
wrote: ... With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. ... Ain't gonna happen. In those hours you're getting ready add in a trip by the store and start w/ chilled would be far cheaper and simpler than all the b/s you're proposing. This reeks of "troll"... Pitch camp next to a glacier fed stream. Put beer in stream and then set up camp. When done, the beer will be cold and you'll probably be ready for one. Choice two would be to bring a mate who's frigid. The world's falling apart the likes of Bush in office and you are worried about a cold beer... I'm happy your priorities are in place. |
Instant Cooling to 35deg.F
"clifto" wrote in message ... Chris Friesen wrote: clifto wrote: You're saying that dissolving calcium chloride is endothermic? No. What he meant was that the calcium chloride would allow the ice to become liquid at -50F. This would give an icewater bath. Pure ice at -50F would be solid, and wouldn't conduct nearly as well due to air pockets around the can. However, good luck finding a freezer that will give you ice at -50F... That's what I figured. It doesn't need -50F ice. Put salt in ice and the temp drops. Remember ice cream makers? O.P. - Try a bucket of ice with some salt and enough water to fill the voids. Keep it moving to swirl the beer for maximum cooling. Or - learn to enjoy good beer that doesn't need to be 35F to be drinkable. Bob |
Instant Cooling to 35deg.F
Bob F wrote:
"clifto" wrote in message ... Chris Friesen wrote: clifto wrote: You're saying that dissolving calcium chloride is endothermic? No. What he meant was that the calcium chloride would allow the ice to become liquid at -50F. This would give an icewater bath. Pure ice at -50F would be solid, and wouldn't conduct nearly as well due to air pockets around the can. However, good luck finding a freezer that will give you ice at -50F... That's what I figured. It doesn't need -50F ice. Put salt in ice and the temp drops. Remember ice cream makers? O.P. - Try a bucket of ice with some salt and enough water to fill the voids. Keep it moving to swirl the beer for maximum cooling. Or - learn to enjoy good beer that doesn't need to be 35F to be drinkable. I was afraid to make that comment! Coming from the other side of The Pond, ice cold beer just ain't beer! ;) |
Instant Cooling to 35deg.F
clot wrote:
Bob F wrote: "clifto" wrote in message ... Chris Friesen wrote: clifto wrote: You're saying that dissolving calcium chloride is endothermic? No. What he meant was that the calcium chloride would allow the ice to become liquid at -50F. This would give an icewater bath. Pure ice at -50F would be solid, and wouldn't conduct nearly as well due to air pockets around the can. However, good luck finding a freezer that will give you ice at -50F... That's what I figured. It doesn't need -50F ice. Put salt in ice and the temp drops. Remember ice cream makers? O.P. - Try a bucket of ice with some salt and enough water to fill the voids. Keep it moving to swirl the beer for maximum cooling. Or - learn to enjoy good beer that doesn't need to be 35F to be drinkable. I was afraid to make that comment! Coming from the other side of The Pond, ice cold beer just ain't beer! ;) However, when you are shopping for beer in an American convenience store, you want it so cold that if you bump the bottle little ice crystals instantly form in it. There's a HUGE difference between an American-style lager and a good stout or porter. They're both ostensibly called "beer" but they're two different beverages entirely and comparisons are unfair. Now Budweiser, that's just nuckin' fasty. nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
Instant Cooling to 35deg.F
Bob F wrote:
"clifto" wrote in message ... Chris Friesen wrote: clifto wrote: You're saying that dissolving calcium chloride is endothermic? No. What he meant was that the calcium chloride would allow the ice to become liquid at -50F. This would give an icewater bath. Pure ice at -50F would be solid, and wouldn't conduct nearly as well due to air pockets around the can. However, good luck finding a freezer that will give you ice at -50F... That's what I figured. It doesn't need -50F ice. Put salt in ice and the temp drops. Remember ice cream makers? .... But it doesn't get even _close_ to the -50F Nick suggests obtaining to meet the desired 15 sec cooling time which is where this subthread originated.. -- |
Instant Cooling to 35deg.F
Kitep wrote:
The OP just has to learn to hit the bottle just right. Liquid to ice in a few seconds. http://video.google.com/videoplay?do...ch&plinde x=0 that's called a "supercooled liquid" - you can actually cool a liquid below its freezing point if it is very, very still - but jostle it a little bit and it will immediately undergo a phase transformation. I wouldn't recommend that video for a high school physics class though :) nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
Instant Cooling to 35deg.F
In article , Nate Nagel wrote:
Now Budweiser, that's just nuckin' fasty. Better than Stroh's. Or Rhinelander (possibly the worst beer in the world; definitely the worst I've ever tasted). -- Regards, Doug Miller (alphageek at milmac dot com) It's time to throw all their damned tea in the harbor again. |
Instant Cooling to 35deg.F
Chris Friesen writes:
Or you could just add a bunch of salt to the ice, thus lowering the freezing point of the mel****er. No. You confuse temperature and heat. The phase change is crucial. |
Instant Cooling to 35deg.F
In article , Richard J Kinch wrote:
Chris Friesen writes: Or you could just add a bunch of salt to the ice, thus lowering the freezing point of the mel****er. No. You confuse temperature and heat. The phase change is crucial. Well, yes, but so is lowering the temperature at which that phase transition occurs. -- Regards, Doug Miller (alphageek at milmac dot com) It's time to throw all their damned tea in the harbor again. |
Instant Cooling to 35deg.F
Doug Miller writes:
No. You confuse temperature and heat. The phase change is crucial. Well, yes, but so is lowering the temperature at which that phase transition occurs. The retention of melt water is a spoiler at any temperature. The product must be in continuous, intimate thermal contact with the unmelted ice, and the melt water rapidly drained away. This is what makes the heat transfer fast. Undrained, the heat transfer slows down remarkably. The melt water has no appreciable heat-sinking capacity, and just interferes with the heat leaving the beverage and flowing to the ice. And the OPs desire was for the fastest possible chill. Using brine (or glycol antifreeze if you really want to experiment) will also lower the terminal temperature, although it slows down reaching it, to where the beverage will be frozen and slushy, not good. |
Instant Cooling to 35deg.F
On Aug 29, 11:59 am, RickH wrote:
On Aug 29, 10:37 am, wrote: I am looking for a means to instantly cool a can of beer to 35deg. F. When I go camping. On hot summer days I like to go camping and sit back to some very cold beers. I am the type of person whose job responsibilities tend to fluctuate every day based on the weather and other conditions. Therefore, I may discover at any time that there won't be any work for the next few days. That's when I take off to go camp at one of my favorite woods, and that could be any day of the week, not just holidays or weekends. When I leave to the campsite I make a grocery and beer run, pack my cooler, hook up my camping trailer and within a few hours I am heading off to camp. The problem is that when I get to camp, my beer is never really cold. It sits in some ice for an hour or two and does not get cold enough in such short time. I dont normally keep beer in the fridge at home because I dont drink when I am working and it never fails someone else will drink it before I am ready to go camping. Otherwise I'd keep some right under the freezer compartment. With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. I am aware that there are certain gases that cause ice to form on a tank. For example, using a disposible propane cylinder will form ice on the cylinder when the gas is released quickly (like when I use my big weed burner torch). I know there are other gases such as nitrogen or is it hydrogen that can have this same effect. My question is what can I use that is readily available, not extremely expensive, safe to use, and will chill the can in seconds? The other question is how to use the stuff in a portable environment. In other words, something I can carry in my camper that simply involves using a hose, some sort of cooling container for the beer can, and simply means turning on a valve, giving me an ice cold beer in a minute or less. Remember, it must be safe and something I can legally carry in a vehicle without using up too much space. All useful advice appreciated. George Or pretend you're in England and drink warm beer.- Hide quoted text - - Show quoted text - Heh. I shipped to Germany in 1962. All local bars served warm beer - very good beer. Shipped again in 1968 - many local, GI patronized bars now had chilled beer. The guys like me who had been there before always had the beer warmed (little electric heaters they stuck in the mug). Then there was the NCO club. They served german beer but were required to push American. Became automatic to order a German brew and recieve an American with it which promptly got poured out. Harry K |
Instant Cooling to 35deg.F
On Wed, 29 Aug 2007 10:41:37 -0500, dpb wrote:
wrote: ... With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. ... Ain't gonna happen. In those hours you're getting ready add in a trip by the store and start w/ chilled would be far cheaper and simpler than all the b/s you're proposing. This reeks of "troll"... Yup. A troll. Anyway Mythbusters on TV did the experiments. Discharging a CO2 fire extinguisher on the can will do a decent job cooling the beer. The wisdom of carrying around a CO2 thingy for this purpose will probably be something George will think a pretty good idea. |
Instant Cooling to 35deg.F
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Instant Cooling to 35deg.F
dpb wrote:
Bob F wrote: It doesn't need -50F ice. Put salt in ice and the temp drops. Calcium chloride is a salt. The ASHRAE HOF says a 32% solution starts to crystallize at -19.5 F, 30% at -50.8, 29.87% at -67.0, 29% at -49.4, 25% at -21.0, and 20% at -0.4. We might start at 30% and use just enough ice (about 12/16(70-35)/144 = 0.2 pounds) to make the beer exactly 35 F when the ice has all melted (frozen beer is no good), including the coolth from the heat capacity and temperature of the final solution and calcium chloride's heat of dilution. But it doesn't get even _close_ to the -50F Nick suggests obtaining to meet the desired 15 sec cooling time which is where this subthread originated.. .... 1 minute, IIRC. The best sodium chloride solution is 23% at -5.1 F. Nick |
Instant Cooling to 35deg.F
Richard J Kinch wrote:
The retention of melt water is a spoiler at any temperature. The product must be in continuous, intimate thermal contact with the unmelted ice, and the melt water rapidly drained away... Or rapidly stirred... Nick |
Instant Cooling to 35deg.F
Harry K wrote:
Heh. I shipped to Germany in 1962. All local bars served warm beer - very good beer. I worked with Siemens in 1975. In Munich, they cooled beer in the chilled air ducts of their large computers. Nick |
Instant Cooling to 35deg.F
On Aug 29, 9:51 pm, "clot" wrote:
.. I was afraid to make that comment! Coming from the other side of The Pond, ice cold beer just ain't beer! ;)- Hide quoted text - .. I say. A chap shouldn't be afraid of defending their preference for warm beer old boy. Is there really any other way? I mean to say; the need to chill any beer to a temperature where you can't taste the darn stuff anyway may mean that it's not good beer anyway; what? And as to this stuff in bottles and tin cans! Well ..................... what can one say. Only good for cooking a chicken on a barbecue; as one associate often says! Now a Guiness etc. at close to room temperature "Is good for you". :-) Cold beer? UGH! |
Instant Cooling to 35deg.F
On Aug 30, 4:50 am, wrote:
Harry K wrote: Heh. I shipped to Germany in 1962. All local bars served warm beer - very good beer. I worked with Siemens in 1975. In Munich, they cooled beer in the chilled air ducts of their large computers. Nick I worked with a large telephone equipment manufacturing company in the late 1950s. Electro-mechanical telephone equipment then worked on large quantities of 48 volts DC. Many of the technicians tools included a little resistor that could be wired up to the 48 volts to hang into and quickly heat one single mug of water to make tea. The resistors, which were usually stained dark brown from the teal leaves used (few tea bags then) didn't burn out because the excess heat well above their, in air rating, boiled the water! Didn't take long for a one or two unnoticed amps at 48 volts to boil one cup of water. Watts = Volts (48) times amps (2) = 96 watts. As much almost as a 100 watt light bulb! |
Instant Cooling to 35deg.F
on 8/29/2007 10:00 PM PaPaPeng said the following:
On Wed, 29 Aug 2007 10:41:37 -0500, dpb wrote: wrote: ... With that said, my object is to find a method to chill a can of beer, or soda, or anything else in a can from room temperature to near freezing temperature within a minute or less. ... Ain't gonna happen. In those hours you're getting ready add in a trip by the store and start w/ chilled would be far cheaper and simpler than all the b/s you're proposing. This reeks of "troll"... Yup. A troll. Anyway Mythbusters on TV did the experiments. Discharging a CO2 fire extinguisher on the can will do a decent job cooling the beer. The wisdom of carrying around a CO2 thingy for this purpose will probably be something George will think a pretty good idea. The best was ice-water-salt, which cooled a 6 pack to 38º F in 5 minutes. http://kwc.org/mythbusters/2005/03/m...a_sixpack.html -- Bill In Hamptonburgh, NY To email, remove the double zeroes after @ |
Instant Cooling to 35deg.F
In article , Richard J Kinch wrote:
Doug Miller writes: No. You confuse temperature and heat. The phase change is crucial. Well, yes, but so is lowering the temperature at which that phase transition occurs. The retention of melt water is a spoiler at any temperature. The product must be in continuous, intimate thermal contact with the unmelted ice, and the melt water rapidly drained away. This is what makes the heat transfer fast. Undrained, the heat transfer slows down remarkably. The melt water has no appreciable heat-sinking capacity That's just complete nonsense -- suggest you look up, and compare, the specific heat of water vs. specific heat of ice. , and just interferes with the heat leaving the beverage and flowing to the ice. And the OPs desire was for the fastest possible chill. Which is achieved using the fastest possible heat transfer. Again -- suggest you investigate which is capable of absorbing, and transferring, heat at a greater rate, ice or water. -- Regards, Doug Miller (alphageek at milmac dot com) It's time to throw all their damned tea in the harbor again. |
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