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(The Consumerist)   New invention known as "metal coffee beans" will help keep your cup of coffee warm for hours. Yes. Hours. HOURS. THIS IS THE GREATEST INVENTION SINCE THE INTERNET   (consumerist.com ) divider line
    More: Cool, internet, inventions, magic beans  
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24274 clicks; posted to Main » on 28 Apr 2011 at 7:13 PM (5 years ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2011-04-29 08:29:19 AM  

relcec: I've never hear of such a substance. so you have any idea what they are using?



Every substance that melts/freezes does that, actually.
 
2011-04-29 08:35:26 AM  

Oznog: relcec: Loomy: relcec: raygundan: This is pretty cool. It doesn't just "keep it warm," it also rapidly cools it down to from the undrinkably-hot brewing temperature (around 200F) to drinking temperature (140F), and then holds it at exactly 140F for hours.

sounds like anything with a higher specific heat than water, like say a lead, could be used. stick some lead covered with non reactive metal that is at room temperature at the bottom of the coffee cup and it leaches off energy. since the coffee cools faster then the lead the relatively warm lead then starts putting energy back into the coffee. does that make sense?

Yes, it makes sense, but that's not what's happening here. What you're describing is what happens in modern housing, where sunlight warms, say, a stone floor during the day, keeping the air temp lower, and then later it releases the heat to the cooler night air. There's no control over the target temperature here; left to it's own devices (and a extra-terrestrially-long day), the floor would just keep getting warmer until the heat input from the sun matched the heat loss to the air: think hot pavement in Arizona.

With these beans (or any phase change material (PCM)), it uses the 'latent heat of fusion', basically the energy required to melt/freeze something without changing its temperature.*

Think of a glass of ice water: assuming you're not just dumping a bit of ice into a tub of hot water, at a certain point, you have ice and water at the same temperature (0 C, 32 F). The ice keeps melting as the glass loses heat to the environment, but the temperature of the water/ice mixture never changes. That is, until the ice is gone, as which point it just behaves as any glass of fluid would.

So, with the substance within the beans (or in the lining of a thermos/travel mug, which I think is an even cooler idea), the substance melts at ~140 F, absorbing heat from the coffee (cooling it down to 140 F more quickly than it would under normal circumstances), and maintains the coffee at that temp., giving off this stored latent heat until the substance 'freezes', and solidifies, at which point it's just dead weight in the cup.

For comparison, a lead-filled bean would just absorb heat until, as the coffee cooled (faster than the lead), it would start giving heat back (as you said, correctly). But there'd be no control over the temperature of the coffee during the process.


/*Not a scientifically precise definition
//Yay! Thermodynamics!

I've never hear of such a substance. so you have any idea what they are using?

Told ya- Field's Metal, melts/freezes at about 140F. Not cheap stuff. And the heat of fusion- what it releases to solidify- is not great enough to effectively keep coffee warm without a high Field's Metal/liquid ration.

Oddly enough, lead does NOT have a high specific heat compared to water. On a per-weight basis, it's only 3% that of H2O!! Even on a volumetric basis, lead is 11.35 times denser, so a cubic inch of lead is only about a third the heat capacity of a cubic inch of water, even though the lead is >11x heavier.


sorry, don't know how I missed that.
 
2011-04-29 08:40:19 AM  

There are a lot of people in this thread who haven't heard of the Tervis Tumbler.

common1.csnimages.com



For your shopping pleasure.
 
2011-04-29 08:59:50 AM  
www.bphs.net

I used to work with a guy who, honest to god, would send back a cup of coffee, or a bowl of soup, if it was .0003 degrees cooler than molten steel... I think he had a granite esophagus or something.
 
2011-04-29 09:09:52 AM  

moops: I bet that thing will give its users metal/chemical poisoning and the inventor will have to refund everyone one dollar and nine cents.


I see what you did there.
media.jinni.com

/hotlink
 
2011-04-29 09:21:35 AM  
OMG... it's coffee. It's good... drink it and shut the fark up.

People ruin naturally good things with their "improvements" all the time.

Drink it. Drink the coffee and shut your pie hole. Put the java in your face and swallow it. Don't talk. Drink the coffee.
 
2011-04-29 09:40:47 AM  

moops: I bet that thing will give its users metal/chemical poisoning and the inventor will have to refund everyone one dollar and nine cents.


No need to be a Jerk about it.
 
2011-04-29 09:42:38 AM  

likesass: Did anyone notice how much coffee he put in his cream?


Seemed about right to me. :-)
 
2011-04-29 10:16:44 AM  

Meatzilla: In my $15 Thermos Grandé tumbler any gourmet coffee I want made one mug at a time and up to 24-ounces stays hot 5 hours or if iced stays cold 8 hours


Is that My K-cup thing worth it? I heard they leak. The girlfriend wants one of those keurig systems but I drink way too much coffee to make it seem economical without one of those reusable things. The only other alternative is 2 coffee makers, but it seems ridiculous to have 2 coffee pots on the counter though.
 
2011-04-29 10:20:02 AM  
t3.gstatic.com

"I'm ready to watch radar. . . for HOURS!"
 
2011-04-29 10:20:14 AM  

Emposter: raygundan: Emposter: gopher321: But then there's LESS ROOM FOR COFFEE!!!

And also my Thermos works perfectly - it keeps 8 cups of coffee hot the whole day.

Came to say this.

Thermos is win.

Thermoses are great-- but do you not see the difference here?

Rather, I don't see the need. My Thermos already keeps stuff hot or cold for hours...what, am I supposed to shoot for days now?


It doesn't keep it warm longer. It keeps it at exactly drinking temperature. You'd still need a thermos to extend the time it stayed at drinking temperature.
 
2011-04-29 10:28:58 AM  

LOGICAL_PSYCHO: raygundan:
Thermoses are great-- but do you not see the difference here?


"In a ceramic mug Joulies will keep your coffee in the right temperature range for only a few minutes longer than usual "


"In a well-made vacuum thermos, on the other hand, Joulies will keep your coffee in the right temperature range for over five hours"


ummmm no.............. I really cant.


You've got to be trolling me. You just outlined the difference yourself there.
 
2011-04-29 10:36:05 AM  

Oznog:
Told ya- Field's Metal, melts/freezes at about 140F. Not cheap stuff. And the heat of fusion- what it releases to solidify- is not great enough to effectively keep coffee warm without a high Field's Metal/liquid ration.

Oddly enough, lead does NOT have a high specific heat compared to water. On a per-weight basis, it's only 3% that of H2O!! Even on a volumetric basis, lead is 11.35 times denser, so a cubic inch of lead is only about a third the heat capacity of a cubic inch of water, even though the lead is >11x heavier.


Whatever is in these things, apparently it's "100% food-grade edible magic." So, likely not metal.
 
2011-04-29 10:44:55 AM  

Occam's Chainsaw: fredklein: microwave

kvinesknows: microwave

BlippityBleep: microwave

Note updated: "heathens".

I suppose you also put A-1 on your steaks and drink Glenlivet with Coke.


HP not A-1. Pepsi, not coke
 
2011-04-29 10:46:39 AM  
If you can't notice ice going into your mouth and down your throat, I'd suggest not drinking your coffee with this either.

//the rest of you are fine.
 
2011-04-29 10:47:27 AM  
Cue Dwayne Dibbly pic
 
2011-04-29 12:01:22 PM  

skylabdown: Put the java python in your face and swallow it.


Am I a perv or a programmer? You make the call.
 
2011-04-29 12:07:00 PM  

Slam Bradley: Meatzilla: In my $15 Thermos Grandé tumbler any gourmet coffee I want made one mug at a time and up to 24-ounces stays hot 5 hours or if iced stays cold 8 hours

Is that My K-cup thing worth it? I heard they leak. The girlfriend wants one of those keurig systems but I drink way too much coffee to make it seem economical without one of those reusable things. The only other alternative is 2 coffee makers, but it seems ridiculous to have 2 coffee pots on the counter though.


That's not a My K-Cup insert. Those do suck. They leak and are messy.

It is called Solofill (new window) and it works awesome. I have two solofills for when I make an extra large mug full of gourmet stuff. Brew one, pop it out and pop in the other, brew that, and it's a big ol' mug full of pleasure. Takes about two minutes, if that. The grounds drop right out in a single tap and they rinse out right under the tap. Dishwasher safe 100% BPA free plastic and stainless steel marvels.

I love my Keurig B70 Platinum. Brews fast, has multiple settings, and makes damn fine coffee. Tea too if you use the pre-made tea k-cups. Amazon has a ton of reviews from owners you can check out (new window).
 
2011-04-29 12:45:32 PM  

raygundan: LOGICAL_PSYCHO: raygundan:
Thermoses are great-- but do you not see the difference here?


"In a ceramic mug Joulies will keep your coffee in the right temperature range for only a few minutes longer than usual "


"In a well-made vacuum thermos, on the other hand, Joulies will keep your coffee in the right temperature range for over five hours"


ummmm no.............. I really cant.

You've got to be trolling me. You just outlined the difference yourself there.




http://www.amazon.com/Nissan-FBB1000-Stainless-Steel-Insulated-Briefca​se/dp/B00 0 09V4FM/ref=sr_1_2?ie=UTF8&qid=1304095179&sr=8-2

"Thermos keeps hot liquids warm for up to 12 hours"

I am saying the only things this garbage is promising, a thermos already does.


Oh Boy! For $50 bucks each I can get my coffee down to drinking temp
TWO minutes faster? Where do I sign up?
Keep it warm in a CUP for a few hours and a will be impressed.
 
2011-04-29 01:17:55 PM  
You guys are all slackers: What happens when you 'overdose' and put like 8 of the magic beans in one cup?
 
2011-04-29 01:32:57 PM  
Meatzilla:

Thanks for the advice I'll check em out
 
2011-04-29 01:47:51 PM  

LOGICAL_PSYCHO: raygundan: LOGICAL_PSYCHO: raygundan:
Thermoses are great-- but do you not see the difference here?


"In a ceramic mug Joulies will keep your coffee in the right temperature range for only a few minutes longer than usual "


"In a well-made vacuum thermos, on the other hand, Joulies will keep your coffee in the right temperature range for over five hours"


ummmm no.............. I really cant.

You've got to be trolling me. You just outlined the difference yourself there.

http://www.amazon.com/Nissan-FBB1000-Stainless-Steel-Insulated-Briefca​se/dp/B00 0 09V4FM/ref=sr_1_2?ie=UTF8&qid=1304095179&sr=8-2

"Thermos keeps hot liquids warm for up to 12 hours"

I am saying the only things this garbage is promising, a thermos already does.


Oh Boy! For $50 bucks each I can get my coffee down to drinking temp
TWO minutes faster? Where do I sign up?
Keep it warm in a CUP for a few hours and a will be impressed.


Like you quoted, this doesn't keep coffee warm. It's not a thermos. Without this, coffee slowly cools from 200F to 140F. With this, coffee rapidly cools to 140F and stays right at 140F for roughly the same amount of time it would have taken to gradually cool to that point.

How long this time period is is still dependent on the cup insulation, as your quotes illustrate.

Not a keep-warm. Still need a thermos for that. This just holds it at drinking temp rather than a gradual cooldown.
 
2011-04-29 01:50:53 PM  

LOGICAL_PSYCHO: I am saying the only things this garbage is promising, a thermos already does.


It doesn't do what a thermos does, and a thermos doesn't do what this does, no matter how drunk subby was when he posted that headline.

Thermos: slows down the rate of cooling.
Metal beans: increases rate of cooling to drinking temp, then holds temp at drinking temp.

Both: increases rate of cooling to drinking temp, holds temp at exactly drinking temp for a long time.
 
2011-04-29 01:59:43 PM  

Acharne: With little enough loss to keep the process balanced for "hours". I just don't believe it. I bet it just cools your coffee down faster. Or it has hilarious instructions included such as "apply more thermal energy" at intervals.


It won't work for hours in a cup. There is, as you point out, no free energy.

If it takes 10 minutes for your coffee to cool from 200 to 140, adding these beans will make it take a minute to cool from 200 to 140, then stay at 140 for 9 minutes.
 
2011-04-29 02:12:33 PM  

Fuggin Bizzy: Porous Horace: The microwave was invented in order to reheat coffee make tea.

I have no idea how people made tea before the microwave was invented. They probably didn't - just sat around looking at their tea bags and cold water wistfully.


www.asia-art.net
then committed hairy carry
 
2011-04-29 02:31:15 PM  

sarah_t_s: heinekenftw: jetzzfan: Coffee is vile.

I second the motion to GTFO and fully support running through this thread with burning torces and pitchforks to ensure it happens.


broadcatching.files.wordpress.com
flash mob!
 
2011-04-29 02:39:50 PM  

Uchiha_Cycliste: I drink a 10c ( I think, a really big one) Moka pot every morning before I ride to work, it's a full coffee cup of espresso. =D


Holy Cuppa Joe, Batman! No wonder your hair does that.
 
2011-04-29 03:36:57 PM  
Maybe this will help people see why these are so cool.

i169.photobucket.com

It keeps your coffee at the correct temperature for a longer period of time and is best used in conjunction with a Thermos.
 
2011-04-29 04:32:13 PM  

Cpl.D: Now I got a searing hot metal projectile I gotta dodge


What? No. You have a piece of metal that's as warm as the comfortable drinking temperature for coffee. That's sort of the point.

That said, if you drink coffee quickly, this is obviously not something you will use.
 
2011-04-29 04:52:35 PM  

Wasilla Hillbilly


This has turned into quite the heated debate.


Cool beans!
 
2011-04-29 05:34:58 PM  

markie_farkie: Who the hell pours a cup of coffee, and lets it sit around for hours?

Useless.


You don't?
 
2011-04-29 06:01:08 PM  

raygundan: It won't work for hours in a cup. There is, as you point out, no free energy.

If it takes 10 minutes for your coffee to cool from 200 to 140, adding these beans will make it take a minute to cool from 200 to 140, then stay at 140 for 9 minutes.


That is actually not quite true.
Heat transfer is dependent on the temperature gradient -- the difference in temperature between the two objects in thermal contact.

Decreasing the temperature rapidly at first by storing the thermal energy and then releasing it back slowly means that there is a smaller temperature gradient between the coffee and the air, which decreases the rate of energy transfer and thus extends the time that the coffee can stay warm.


albatros183: markie_farkie [TotalFark] 2011-04-28 06:17:14 PM
Who the hell pours a cup of coffee, and lets it sit around for hours?

Useless.

over in one the rest of you are stupid


Don't be an ass. Some of us actually do things while we are drinking coffee. I'd like to put one of these in a big cup of coffee to keep it warm while I study, so I don't have to worry about it going cold if I take the time to work on something.
 
2011-04-29 06:23:22 PM  

Gawdzila: Heat transfer is dependent on the temperature gradient -- the difference in temperature between the two objects in thermal contact.


I simplified to try and emphasize why this isn't just a "dumb alternative to a thermos," but you're absolutely right. Lowering the temp will slow how quickly heat is lost to air by a small amount, but it's still not a thermos replacement. Even their website says "In a ceramic mug Joulies will keep your coffee in the right temperature range for only a few minutes longer than usual." If you want a longer drinkable-temp time, you still need a thermos.
 
2011-04-29 09:08:32 PM  

WeenerGord: Uchiha_Cycliste: I drink a 10c ( I think, a really big one) Moka pot every morning before I ride to work, it's a full coffee cup of espresso. =D

Holy Cuppa Joe, Batman! No wonder your hair does that.


You'd be shocked how quickly that caffeine wears off after exercise.
OTOH, you'd also be shocked how awful you feel if you DON'T exercise. You simply wanna die.
 
2011-04-29 10:44:09 PM  

Uchiha_Cycliste: you'd also be shocked how awful you feel if you DON'T exercise


Oh I know. Gotta get those endolphins.
 
2011-04-29 11:59:36 PM  

WeenerGord: Uchiha_Cycliste: you'd also be shocked how awful you feel if you DON'T exercise

Oh I know. Gotta get those endolphins.


is that what seems to neutralize the stimulant? My experience is when I stop riding, be it an hour or 4 hours later, the coffee power is exhausted. If I don't ride, I feel strung out and twitchy.
 
2011-04-30 12:24:24 AM  

WeenerGord: Uchiha_Cycliste: you'd also be shocked how awful you feel if you DON'T exercise

Oh I know. Gotta get those endolphins.


Tuna's not as good without the endolphin.
 
2011-04-30 01:14:24 AM  

Uchiha_Cycliste: I feel strung out and twitchy.


Sure that's not the coffee talking?
 
2011-04-30 01:19:25 AM  

WeenerGord: Uchiha_Cycliste: I feel strung out and twitchy.

Sure that's not the coffee talking?


I should have qualified, when I drink that amount of coffee, and don't exercise. gut hurts, feel twitchy and restless. For quite some time too, much longer than an average ride to work. Something about that ride neutralizes that coffee, which is fantastic.
 
2011-04-30 01:45:06 AM  

Uchiha_Cycliste: WeenerGord: Uchiha_Cycliste: I feel strung out and twitchy.

Sure that's not the coffee talking?

I should have qualified, when I drink that amount of coffee, and don't exercise. gut hurts, feel twitchy and restless. For quite some time too, much longer than an average ride to work. Something about that ride neutralizes that coffee, which is fantastic.


May I suggest that, for those rainy days and holidays when cycling long distances is not feasible, you equip your apartment with a giant hamster wheel. Costume optional.
 
2011-04-30 01:51:21 AM  

WeenerGord: Uchiha_Cycliste: WeenerGord: Uchiha_Cycliste: I feel strung out and twitchy.

Sure that's not the coffee talking?

I should have qualified, when I drink that amount of coffee, and don't exercise. gut hurts, feel twitchy and restless. For quite some time too, much longer than an average ride to work. Something about that ride neutralizes that coffee, which is fantastic.

May I suggest that, for those rainy days and holidays when cycling long distances is not feasible, you equip your apartment with a giant hamster wheel. Costume optional.


I call them rollers.
bikenoob.files.wordpress.com
=D
 
2011-04-30 01:52:08 AM  
(not me, or my bike) I don't have a (sober) picture of me riding the rollers.
 
2011-04-30 02:23:51 AM  

Uchiha_Cycliste: OTOH, you'd also be shocked how awful you feel if you DON'T exercise.


"Suddenly you begin to vomit. Pay it no mind."

-Jim Fixx in Doonesbury
 
2011-04-30 03:06:24 AM  

UNAUTHORIZED FINGER: Uchiha_Cycliste: OTOH, you'd also be shocked how awful you feel if you DON'T exercise.

"Suddenly you begin to vomit. Pay it no mind."

-Jim Fixx in Doonesbury


that's the spirit!
 
2011-04-30 09:51:50 AM  

Uchiha_Cycliste: that's the spirit!


Heh, that's what I'd say if I saw Jim Fixx today! :)
 
2011-04-30 01:39:43 PM  

Uchiha_Cycliste: May I suggest that, for those rainy days and holidays when cycling long distances is not feasible, you equip your apartment with a giant hamster wheel. Costume optional.

I call them rollers. =D



OH SNAP

I come up with what I think is one of the best, most ridiculous jokes of all time, a man in a giant hamster wheel, and it turns out the guy has already got one!

BURN! You win sir! Cycle on with your bad self, on your hamster rollers!
 
2011-04-30 02:49:13 PM  

WeenerGord: I come up with what I think is one of the best, most ridiculous jokes of all time, a man in a giant hamster wheel, and it turns out the guy has already got one!


Dammit, I can't find the photo of the human hamster kinetic sculpture that was one of the first entrants in the glorious Kinetic Sculpture World Championships. It was a 12-foot hamster wheel that used a band drive to roll itself down the street. Not fast, but ingenious. Here's the closest I could find to the concept.

farm4.static.flickr.com
 
2011-04-30 10:20:13 PM  

UNAUTHORIZED FINGER: the concept.


www.idealog.us
www.oddballdaily.com
www.teamal.com
 
2011-05-01 12:19:50 AM  
WeenerGord:

LOL, similar, but not exactly. I found a photo that's similar on Flickr, but it won't let me hotlink it. Link (new window) This is kinda what I was talking about.
 
2011-05-01 01:19:55 PM  

UNAUTHORIZED FINGER: photo that's similar on Flickr,



Hey that looks like fun! Only they left off the chicken wire on the sides to prevent the hamsters from escaping.

Meanwhile for those trips to Walmart
www.digtriad.com
 
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