Do Peltiers Spread the heat?

[tripwire]

hey, I was wondering with a peltier, doe sit spread all the heat to the entire surface? or does it just transfer the heat? Cuz, if it spread out the heat, it'd be more efficient to cool correct?

 

[Diggrr]

TEC's don't spread the heat that they transfer by much. If they did, then they wouldn't need a coldplate when puting them on the small cpu.
There's some heatspreading happening, just because the ceramic does this a small ammount on it's own, but it's not enough to make it more efficient.

 

[[EG]~NaTz~]

awwhhhh idea a copper chamber like a heat pipe but with no air space this would work well as a heat spreader due to te fact that the water would move the heat faster than the copper. yet it would touch the copper all the time.

 

[tripwire]

draw up a design. Im interested.

 

[Diggrr]

Hey bud, I believe that moving water conducts heat better than copper, water sitting still is less than 10% of copper's performance.

Now if the chamber were large enough for the water to set up it's own convective flow (cpu heat on one side, TEC on the other), that might be different (or still worse than copper alone).

 

[wildfrogman]

What you really want is a heat plate. Basically think of it as a heat pipe but flat and has water or ammonia under pressure with a wicking structure and spreads out heat really really well. www.thermacore.com has lots of high end heat pipe and plates among other things that are pretty interesting.