Can I use peltier modules as a heater

[cowboybob]

Welcome to ETO, PhysZe!

... I was thinking of a single peltier element to achieve this temperature range, but, as I see from your answers, that might be a difficult and even impossible solution to my problem. ...

I think it could be done, but that remains to be seen.

For starters, perhaps this will help with your design effort(s).

 

[kubeek]

I don´t think a peltier alone will be good enough to get the high temperature. To get the low temp, you need to have a good heatsink on the outside.
To get the high temp, you would want the outside to be isolated or a really poor heatsink, so that the outside is at a high enough temperature that the delta t of the peltier is enough to get you to your 150°C on the inside. My guess is you will need a standalone heater along with the peltier.
Or some vanes or covers on the heatsink, which seems very impractical.

 

[Reloadron]

Hello!

I'm currently an intern at the Vilnius University Laser Research Center and I must develop a small dimension (aprox~40mmx60mmx5mm) sample heating/cooling system with a temperature range of -2ºC up to 150ºC for my setup. I was thinking of a single peltier element to achieve this temperature range, but, as I see from your answers, that might be a difficult and even impossible solution to my problem.

What made me think about a peltier device is the fact that I need something not too bulky and that can have a hole in its center (for sample backlighting purposes). Do you know any other solutions that may help me? (probably two different setups, one for heating - using resistors - and other for cooling?)

Thank you very much!

Really, your best opportunity for help would be to start a new thread. The original beginning of this thread is about 9 years old with some chatter a few years ago. Good question and again just start a new fresh thread.

Ron

 

[Pommie]

If you run a peltier without heatsinks it'll get so hot it destroys itself.

Mike.

 

[PhysZe]

Thank you so much for your answers! I'll follow Ron's tip and I'll start a new thread on this particular topic