Quote:
Originally posted by gmat
- In my previous post i carefully chosed the 'power' term and not 'voltage'. If you want, say, 100W of cooling, with 50% of inefficiencies (not far away from reality) you must provide 150W of power. Even when using a 200W rated device.
- if you happen to use one of those devices at 10% of its rated power, how does it behave ? Is it any better than an 'usual' pelt ?
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My impression of these devices, based on the link above, is that they are similar to existing TEC's in behavior but much denser.
Based on that, a CPU sized module may behave similarly to four 172 Watt TEC's.
Below are some simulations of a system of four 172 Watt TEC's in parallel, at voltages available from a PSU.
I've chosen 0.22 C/W for the hotside parameters based on a White Water and reasonable radiator, etc.
I've chosen 0.1 C/W as what I believe to be a fairly conservative thermal resistance between the CPU and the coldside of the device.
CPU power dissipation is set at 100 Watts.
First off 12V:
In this simulation CPU temperature is 3.9C with a TEC power consumption of 247 Watts. This is vastly better than anyone is is doing with a TEC now with that much power consumption.
Next consider the setup powered at 5V:
Only 45 Watts power consumption and the CPU is still 4C below ambient.
Finally 3.3V:
A mere 21 Watts still maintains the CPU near ambient.
They may not be affordable anytime soon, but this technology may be absolutely necessary for Moore's law to continue to hold true.