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Can I use peltier modules as a heater

ela

Feb 10, 2010
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Feb 10, 2010
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Hello everybody,
I am wondering how to use peltier module as a heater?
I have a Al block that I want to heat it up by putting the cod side of the peltier module on it. the other side is in floating in air(ambient). I am wondering which side is working as a reference for temperature. If I connect the peltier module to a power supply , by increasing the voltage, how the temperature varies in both sides? if I have temperature increase in one side and the floating side keeps the same temp as ambient temperature or both have increase and decrease in temperature?

Thanks for ur help
 

Resqueline

Jul 31, 2009
2,848
Joined
Jul 31, 2009
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2,848
Yes you can use it as a heater, even in the way you describe. You just have to be careful about its maximum operating temperature spec. wether that be 70 or 130 degrees Celsius (there are two types made).
The side with the biggest heatsink will change the least from ambient, exept that the hot side dissipates a lot more power (3x ?) than the cold side absorbs. So with an x times bigger hot-sink than cold-sink it'll be half-way both sides.
 
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