Miracle material - Cools as current passes through.

[The Buddha]

Yea is there anyhitng like that.
I know semiconductors go down in resistance as they heat up, and hence draw more current and get lower resistance ... and ... they burn up.
But is there a material that also gets cooler along with that drop in resistance ... or anyway who cares about resistance ... If there were we could make a jacket and pants set with that inlaid. then we have an A/C suit ...
Cool.
Srinath.

[gazingwa]

wow...  heat is energy.... if you ad electricity, which is another form of energy.... the result is more heat. you would have to have a chemical reaction to cause cooling and that would either have to be discharged at sometime or replaced as it was used up.

[The Buddha]

I said "miracle" didn't I ... Ok lemme put it in words you might understand ...
"Magic" material wanted - Should get colder when I pass current through it. OK happy now  :lol:  ...
Cool.
Srinath.

[gazingwa]

<--- better to be a smartass than a dumbass....

I knew you knew better

[fettcols]

Maybe an entothermic reaction.... Don't kill me on the spelling..

[Recreational_Anxiety]

Just make a suit with built in evaporator, condenser, receiver dryer, compressor.  The suit will only weigh about 70 lbs, so it should be pretty comfortable.  Then you just need to find a spot on the GS for a second generator and large battery to run your suit.

[My Name Is Dave]

I am not being a duck, but your use of ellipsis rather than regular punctuation marks makes it extremely difficult to discern if you are asking, telling, or otherwise. Maybe it's just me though  :dunno:

D  

[Rema1000]

Google on thermoelectric cooler, or peltier, solid-state heat pump.  Basically, it's a sandwich of two metal plates, with semiconductor between, where you pass electricity through the sandwich and one plate gets hot and the other gets cold.  You put the "hot plate" outside, and the "cold plate" inside.

They can look like this:


...and get used in things like this:

[LEVO]

In 1834, a scientist called Peltier discovered the inverse of the Seebeck effect, now known as the "Peltier effect": He found that if you take a thermocouple and apply a voltage, this causes a temperature difference between the junctions. This results in a small heat pump, later referred to as also known as a thermo-electric cooler (TEC).

Practical TECs use several thermocouples in series, which allows a substantial amount of heat transfer. A combination of the semiconductors Bismuth and Telluride is most commonly used for the thermocouples; the semiconductors are heavily doped, which means that additional impurities are added to either create an excess (N-type semiconductor), or a lack (P-type semiconductor) of free electrons. The thermocouples in TECs are made of of N-type and P-type semiconductor pieces bonded together.

Since peltier elements are active heat pumps, they can be used to cool components below ambient temperature - which is not possible using conventional cooling, or even heat pipes.



Do a search on Peltier effect cooling.  :mrgreen:

[The Buddha]

Yea see Gazingqa ... magic my ass ... its there ... not to buy like 100 of these and duct tape them to my body ... then put on the thong and the chaps ... Ha ha ...
You guys are the coolest ... smartest and the most googliest ...
Cool.
Srinath.

[gazingwa]

yeah... a peltier used to cool cpu's... one side gets cool, the other hot... you then need a heat sink mounted on the other side...

So... when you go riding down the road with metal fins sticking out all over i'll just point and laugh :lol:

[The Buddha]

Not a problem ... I'll be the one laughing when I am freezing in my thong ...
Cool.
Srinath.

[ktrim]

heres an idea for a cooling system,  small back pack with filled with water, attached to a tube that wraps around the bottom of a jacket.  the jacket material will wick the water out of the tube.  air blowing over the jacket while your riding will cause a cooling effect.  the temp of the water would not matter, just have to adjust the volume of water in the tube for different temps.  refill at any water fountain or bathroom at no cost.

[RVertigo]

your use of ellipsis

...  Ellipses ... Are ... GOOD! ...

... :lol: ...

[rclz]

get two rain jackets (waterproof) sew them together and fill it with water and strap an intercooler on. :lol:

[zukiGS500]

The neat thing about a peltier cooler, is that if you reverse the current, the side that gets cool switches also. So if it gets cold, just flip a switch and you now have a suit that keeps you warm.

[The Buddha]

Yea though the jacket and possibly the layer of chips and their backing plates etc needed ... will negate the need for a heater ... even in the coldest of days ... OK fine if you live in alaska ...
Cool.
Srinath.

[Dr. Love]

:lol: Peltier chip aren't all that effecient (5~20%) and it requires electricity to run, whereas a conventional refrigeration system can run straight off the engine. The ineffeciency coupled with the loss in power generation means it takes up to 10x the power to provide the same cooling as conventional AC.  And, having a 12V electrical system requires the chip to be run on high current (like... over 1000A for ~30000Btu/hr of cooling...)

better just put a block of ice in the tank bag.