Can Thermocouple Junctions Cool Down When Supplied with Current?

[harsh077]

is it possible that instead of heating the junction ... of thermocouple...
we supply the current n the juntion cools down...
which when touched felt cold...
according to the supply of current...??

if not then is there any method of doing that

 

[Dadface]

is it possible that instead of heating the junction ... of thermocouple...
we supply the current n the juntion cools down...
which when touched felt cold...
according to the supply of current...??

if not then is there any method of doing that

Try googling the "Peltier effect"

 

[harsh077]

yes sir,
u r right its proved by peteir effect only... by mit student
n he made a climate control jacket by using thermocouple...

i have searched so much but not able to get technical details ...
how is that made possible..
they say they r using a lap top sized battery
they beark hydrogen ion..
the temp inside the jacket will be maintained from 18 to 40 degree
when the atmosphereric temp. is from -30 to 50 degree...
i think they use semi conductor too...
as per as my info...

thanks for replying...

please do replyy...

 

[my_wan]

http://en.wikipedia.org/wiki/Thermoelectric_cooling

You can buy a combination refrigerator/heater at Wal Mart that works this way. You simply toggle a switch to go from heating to cooling. The 12 volt coolers for cars generally work this way.

 

[harsh077]

thank u sir..
i will tell u the ...
out come...