Cooling peltier cooling

is there a way to control how cold or how you can make a peltier by the amount of voltage or electricity you give to it?

im new to peltiers and trying to see how effective they would be and cost effective

 

I am think that this may be possible. But I am not sure - i have never seen it

 

I imagine there is a treshold value below which they won't work, and above which you fry them. But most pro setups use a thermostat controlled variable power supply for the Peltier in any case.

The reason is simple: CPUs at idle generate much less heat than CPUs at full load. So although it is nice to have your CPU under load all cool and chilled, you don't want it to freeze while it is idle: the temperature differences would cause all sorts of expansion-contraction dynamics and wear out the socket and the chip. Not to mention the condensation: freeze on, drip off, freeze on, drip off... So what the variable power supply does is throttle power to the Peltier corresponding to how hot the temp sensor tells it the CPU is at any given moment.

As for effectiveness: yes, they are, but cost-effective, nope, they aren't...
Still, you want to get that overclock, it's the way to go.

 

So im designing a controll circuit for my pelt system. Right now i was thinking about just hooking up a voltmeter (old analog one but didital would be much better) and a veriable resistance pot. That way i would be able to controll the voltage going into the Pelt and thus the temp. Does any one know how i might be able to use a thermo-resister (sp?) to do the same job? the pelt im using is a 226 watt swiftech.

Any help would be great

 

Can't you buy those variable power supplies just off the shelf?

 

You would use the thermistor in between a mosfett-gate or something similar that could handle the amperage. Therefore, the voltage would go up and down on the gate, thereby, controlling the pelt.

You could do the same with a 12v regulator. But those only handle a few amps. So you'd need to work on a way to up the capacity. Go parrell with them is my only guess... but you'd need around 10 in parrell to handle a 226w pelt. Could get expensive.

This by no means is adjustable though... you'd have to look up specs on a thermistor you think will do the job. There is tons that have different ohms at different temps.