If you can read this, either the style sheet didn't load or you have an older browser that doesn't support style sheets. Try clearing your browser cache and refreshing the page.

(Fox News)   Resistance is futile, you will be assimilated into the portable air-conditioned collective   (foxnews.com) divider line 51
    More: Cool, MIT, thermoelectric cooling, air conditionings, lithium batteries, potential energy, electrical conductor, body temperatures, effective method  
•       •       •

7680 clicks; posted to Main » on 05 Nov 2013 at 9:09 AM (46 weeks ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



51 Comments   (+0 »)
   
View Voting Results: Smartest and Funniest

First | « | 1 | 2 | » | Last | Show all
 
2013-11-05 01:41:01 AM
One side of the "cooler" gets blazing hot.
The perception after a few minutes is a few degrees Celsius cooler.

Yeah, I can see that working in Tucson in June.
 
2013-11-05 02:28:31 AM

demaL-demaL-yeH: One side of the "cooler" gets blazing hot.


Depends on the system. An actual heat pump? Yeah. But an evaporation cooled device? I don't think so. You don't even need moving parts, just conductive metal and wet membrane.
 
2013-11-05 02:44:01 AM

doglover: demaL-demaL-yeH: One side of the "cooler" gets blazing hot.

Depends on the system. An actual heat pump? Yeah. But an evaporation cooled device? I don't think so. You don't even need moving parts, just conductive metal and wet membrane.


Dude, TFA says it's a frickin' Peltier device: One side gets hot.
Evaporative cooling works fine in Tucson until the humidity rises for the   monsoon season.
 
2013-11-05 02:56:45 AM

doglover: demaL-demaL-yeH: One side of the "cooler" gets blazing hot.

Depends on the system. An actual heat pump? Yeah. But an evaporation cooled device? I don't think so. You don't even need moving parts, just conductive metal and wet membrane.


My method just relies on a wet membrane.

www.orillia.ca
 
2013-11-05 04:10:40 AM

demaL-demaL-yeH: doglover: demaL-demaL-yeH: One side of the "cooler" gets blazing hot.

Depends on the system. An actual heat pump? Yeah. But an evaporation cooled device? I don't think so. You don't even need moving parts, just conductive metal and wet membrane.

Dude, TFA says it's a frickin' Peltier device: One side gets hot.
Evaporative cooling works fine in Tucson until the humidity rises for the   monsoon season.


What are you doing in Tucson? That's FAR south of the habitable zone.
 
2013-11-05 09:01:55 AM
Somebody was really bored when they were going through their junk box full of old heat sinks.
 
2013-11-05 09:12:59 AM

Barry Lyndon's Annuity Cheque: Somebody was really bored when they were going through their junk box full of old heat sinks.


I hope they are using gluten free conductive paste.
 
2013-11-05 09:13:56 AM
Peltier?

Sweet I can use the hot side to melt my enemies faces off.
 
2013-11-05 09:14:15 AM
Peltier effect...


Stopped reading right there.
 
2013-11-05 09:14:43 AM
This story will go viral on all the local Fox stations for the rest of the week, coupled with an editorial about Heresy: Believing that crap about global warming.
 
2013-11-05 09:15:39 AM
But it's a DRY heat.

/someone had to say it.
 
2013-11-05 09:17:24 AM

ChipNASA: But it's a DRY heat.

/someone had to say it.


SCILENCE! I kill you!
 
2013-11-05 09:18:05 AM
Perhaps it'll catch on by the time it becomes fashionable to wear a heatsink on your wrist.
 
2013-11-05 09:20:14 AM

unyon: doglover: demaL-demaL-yeH: One side of the "cooler" gets blazing hot.

Depends on the system. An actual heat pump? Yeah. But an evaporation cooled device? I don't think so. You don't even need moving parts, just conductive metal and wet membrane.

My method just relies on a wet membrane.

[www.orillia.ca image 550x400]


Funny, when I come across a wet membrane in my house things get HOT.
 
2013-11-05 09:22:06 AM
Pffft. It's going to take more than that to cool my big sweaty butt.
 
2013-11-05 09:23:04 AM

mike_d85: unyon: doglover: demaL-demaL-yeH: One side of the "cooler" gets blazing hot.

Depends on the system. An actual heat pump? Yeah. But an evaporation cooled device? I don't think so. You don't even need moving parts, just conductive metal and wet membrane.

My method just relies on a wet membrane.

[www.orillia.ca image 550x400]

Funny, when I come across a wet membrane in my house things get HOT.


flucto: Pffft. It's going to take more than that to cool my big sweaty butt.


Best comment timing EVER!
 
2013-11-05 09:24:09 AM
First off, lol Peltier device.

Secondly, your wrist would be an awful place to put this. It restricts movement of one of you most mobile joints and try typing with that strapped where they put it. The ideal place is where you've got lots of capillaries close to the skin. The ears or parts of the face and head come to mind.

alexplorer.net
 
2013-11-05 09:24:44 AM
That name pisses me off. Getting sick of the trend of naming things by taking a word and applying a nonsense suffix to it.
 
2013-11-05 09:27:30 AM
Saw headline. Went 'Peltier effect?' Clicked link. Yep.

It's 'an apparent' temp change. Ok, so maybe useful in office settings for people who are sweating or freezing to adjust themselves a bit without having to spend the power to change the thermal in the building.
 
2013-11-05 09:28:10 AM
When I do it at UT Tyler, nothing.

Do it with MIT attached to the name, news coverage.

Anyhow, neck cooling is the more practical approach. Peltiers are a biatch to make in any appreciable size.

Next week: MIT students, using Peltiers, come up with way your body heat could charge your cell phone.

/fark, if I had the seed money I could get rid of the alternator from the conventional auto.
 
2013-11-05 09:31:54 AM

kroonermanblack: Saw headline. Went 'Peltier effect?' Clicked link. Yep.

It's 'an apparent' temp change. Ok, so maybe useful in office settings for people who are sweating or freezing to adjust themselves a bit without having to spend the power to change the thermal in the building.


Employee #1 Old mr. Jenkins is such a tight-wad.  It's 97 degrees in here and he won't turn on the A/C.
Employee #2:  No big deal, with my Wristify® I feel like it's only 94 degrees!
 
2013-11-05 09:33:54 AM

wildcardjack: When I do it at UT Tyler, nothing.

Do it with MIT attached to the name, news coverage.

Anyhow, neck cooling is the more practical approach. Peltiers are a biatch to make in any appreciable size.


Can't you just dip a heat sink in water and strap it to your wrist for the same effect?
 
2013-11-05 09:35:10 AM
The Peltier effect is real. The idea is to use electrical power to transmit heat from one side of an object to other side of the object. The problem is that Peltier cooling is horribly inefficient compared to standard air conditioning. Normally Peltier cooling is restricted to specialized applications where the conditions do not allow for standard cooling techniques.
Peltier cooling for humans has been tried before. I think there were some prototypes built into chairs at one point (the back of the chair got hot).
Until someone gets the efficiency up it will remain a specialty application.
 
2013-11-05 09:38:13 AM
It's not that novel and nothing will come of it.

/ chemical engineer
 
2013-11-05 09:38:37 AM
cdn5.movieclips.com
 
2013-11-05 09:44:35 AM
Wake me when some genius uses this tech to put a soft heating pad on the upper pallet of my mouth to drain my sinuses when I have a flu.

Steal this idea, please.
 
2013-11-05 09:50:36 AM
So it fools you into thinking you are cooler, rather than actually cooling you off.

Nice.

Enjoy your heat stroke.
 
2013-11-05 09:53:56 AM

doglover: demaL-demaL-yeH: doglover: demaL-demaL-yeH: One side of the "cooler" gets blazing hot.

Depends on the system. An actual heat pump? Yeah. But an evaporation cooled device? I don't think so. You don't even need moving parts, just conductive metal and wet membrane.

Dude, TFA says it's a frickin' Peltier device: One side gets hot.
Evaporative cooling works fine in Tucson until the humidity rises for the   monsoon season.

What are you doing in Tucson? That's FAR south of the habitable zone.


Seriously. Contact your nearest GDI refugee office and find out your options of moving to a Yellow or Blue zone.

images.wikia.com
 
2013-11-05 09:54:04 AM
So, a Peltier and an aluminum heat sink from China bought on ePay and an Arduino.

I have similar plans for a cooled seat cover to go in my classic cars, except it's liquid to liquid. Much easier than A/C installation when it's only me driving most of the time and doesn't have to be terribly cold, just take the edge off on hot days.

For personal cooling, the misters or the vests already sold that leverage a small pump in an ice cooler you wear on you are the way to go. Until they get solid-state cooling to be a lot closer to phase transition. The Peltiers just suck too much power.
 
2013-11-05 10:02:13 AM

doglover: wet membrane


Giggity.
 
2013-11-05 10:03:53 AM

wildcardjack: When I do it at UT Tyler, nothing.

Do it with MIT attached to the name, news coverage.

Anyhow, neck cooling is the more practical approach. Peltiers are a biatch to make in any appreciable size.

Next week: MIT students, using Peltiers, come up with way your body heat could charge your cell phone.

/fark, if I had the seed money I could get rid of the alternator from the conventional auto.


There has been some research on using tapping the heat flux through an object and generating electrical power from it. It is very inefficient at this time and the temperature differential has to be pretty high. Last I knew there was some research in using it on cat exhausts.
 
2013-11-05 10:13:51 AM

Elfich: using it on cat exhausts


www.bruning.com
 
2013-11-05 10:16:51 AM
Worst. Watch. Ever.
 
2013-11-05 10:21:10 AM
A lot of haters, most of you ignorant of  that one Discovery Channel show I watched about it that explained some of this but also let's say SCIENCE, and yet the one actual obvious problem goes uncommented on.

First, what's right:

• Yes, this works--both physiologically and psychologically. You feel cooler, you are (fractionally) cooler.
• Yes, the wrist is a perfectly reasonable place to put this. It's not the only area of your body with a lot of blood vessels near the skin, but you don't need to cool every molecule in your bloodstream for this to work.
• It even works in reverse: you can keep people in wetsuits alive and comfortable in water temperatures that would kill them dead just by circulating hot water from above through a glove. It only heats the blood passing by the hand, but that's enough.
• The hot air coming off the other side isn't in any real thermal contact with your body and won't heat you back up. It might be annoying, though. Maybe the fashion will be to start wearing clothing with built-in vanes.

Unfortunately, I don't see something like this working for more than a few minutes without giant farking batteries, as the Peltier effect is not really all that efficient. But that's only a problem if you need to wear it around. What about a nice cooling chair* that you can plug into the wall?

* um, patent pending, if I just invented something.
 
2013-11-05 10:21:21 AM
Try the Brantgoose method--over dress. This raises your temperature, but it raises the perceived temperature of everybody else even more, so you come out ahead on points.

Meh. It's a hobby.
 
2013-11-05 10:21:55 AM

Elfich: The Peltier effect is real. The idea is to use electrical power to transmit heat from one side of an object to other side of the object. The problem is that Peltier cooling is horribly inefficient compared to standard air conditioning. Normally Peltier cooling is restricted to specialized applications where the conditions do not allow for standard cooling techniques.
Peltier cooling for humans has been tried before. I think there were some prototypes built into chairs at one point (the back of the chair got hot).
Until someone gets the efficiency up it will remain a specialty application.


Of course it's real, just look at any wine cooler out there.

The problem here is that the headline is misleading. This wouldn't do much to actually cool you, but would make you feel cooler. Doesn't seem practical at all though.
 
2013-11-05 10:24:02 AM
ummm... sorry ... but I bought a device like this about 15 years ago from the Sharper Image catalog. The ONLY difference was that it was designed to be worn on the back of the neck instead of the wrist.  You find out very quickly that you sweat all over your body for a very good reason:  it evaporates and cools you down all over.  If it were better to "supercool" one small spot then I think we would have evolved with such a system. Time is pretty smart.
 
2013-11-05 11:26:55 AM
That would be great for working in hot attics .

/AC mechanic
 
2013-11-05 11:42:02 AM
Welcome to Carpal Tunnelville

Can't wait for it to short out and slap 24v at 3A through someone's wrist while they're driving... or masturbating.
 
2013-11-05 11:43:04 AM

RottenEggs: That would be great for working in hot attics .

/AC mechanic


You can already buy a little strap-on-back heatsink that uses a pressurized air line to provide cooling air AND fresh air for you to breathe.
 
2013-11-05 11:46:30 AM
Horsefeathers to the nth degree

You try branding cattle in 98 degree sun and tell me 'personal air-conditioner'
 
2013-11-05 11:47:59 AM
Lol, my school did this, and didn't make headlines.
Probably because we were full of mexicans and not rich white people.
 
2013-11-05 12:23:33 PM
Why overthink it?
Why not just buy a fan and a 1.5v battery.

Cripes.. I was in 6th grade in a middle school that had no AC.   On a hot day I just
harvested parts from a Capsella building set and made myself a personal fan.

upload.wikimedia.org

lets not do that.. lets use peltiers !
 
2013-11-05 12:31:00 PM

demaL-demaL-yeH: Dude, TFA says it's a frickin' Peltier device: One side gets hot.


It's a passive system where the inputs are the ambient temperature and your body heat.  How  hot do you expect it to actually get?
 
2013-11-05 12:38:50 PM

Nutsac_Jim: Why overthink it?
Why not just buy a fan and a 1.5v battery.

Cripes.. I was in 6th grade in a middle school that had no AC.   On a hot day I just
harvested parts from a Capsella building set and made myself a personal fan.

[upload.wikimedia.org image 220x179]

lets not do that.. lets use peltiers !


Capsela! Woo-hoo!
 
2013-11-05 01:55:56 PM
We come across quite a lot of cool technology, but it's not every day that we find something that can literally cool you down.

Water can literally cool you down.  It is every day that we find water.
 
2013-11-05 02:21:58 PM
This is so stupid.  I guess it might work if the ambient temp is like 80 or less with little humidity.  But when it's hot and humid this won't do jack except make one wrist feel cool.
 
2013-11-05 05:35:56 PM

flucto: Pffft. It's going to take more than that to cool my big sweaty butt.


then stick it between your ass cheeks
 
2013-11-05 06:59:57 PM

CivicMindedFive: This is so stupid.  I guess it might work if the ambient temp is like 80 or less with little humidity.  But when it's hot and humid this won't do jack except make one wrist feel cool.


Please reread the thread. This is not an evaporative cooler, it is a thermoelectric cooler. Its efficiency is not affected by relative humidity.

Not that it isn't stupid, it most assuredly is.
 
2013-11-05 09:01:19 PM

prjindigo: RottenEggs: That would be great for working in hot attics .

/AC mechanic

You can already buy a little strap-on-back heatsink that uses a pressurized air line to provide cooling air AND fresh air for you to breathe.


Yeah but most likely I'll never be lucky enough to work for a company who wants to buy either product .
 
Displayed 50 of 51 comments

First | « | 1 | 2 | » | Last | Show all

View Voting Results: Smartest and Funniest


This thread is closed to new comments.

Continue Farking
Submit a Link »






Report