peltier stackin

[RangerJoe]

why does it work so well to stack peltiers on top of each other...i know one guy has a quad peltier system....and the chip will run at almost 3ghz..so why does it work?

[Diggrr]

He may have a quad system, but I kinda doubt that their stacked.
Just stacking a pair of 120's, they'll burn themselves out quickly.

[Diggrr]

Here's how peltiers are stacked, using tecs of different values in a cascade. (buy it assembled, never make your own)

Pic blatantly stolen from www.melcor.com

[Colin]

Three 172s with two on top and one on the bottom would be my choice. That's a lot of heat to dispose of! :D

[ButcherUK]

You don't get much gain really. If you want that sort of cooling go phase change. Stacked TECs can't really handle the heat loads cpus put out without getting silly.

[Morbid]

This isn't on the subject.. I just wanted to ask Ranger Joe if that is his car in his avatar? I LOVE Ferrari Modena's.. well, I love all Ferrari's. They're my dream cars :D
:burn:

[alan55kc]

I've been browsing some of the subjects on peltiers & power supplies needed to run them. It's obvious that even a stock high wattage PC power supply would only be able to handle 1 or 2 small peltiers. Doing the math, a 172 W peltier running on 12 V will pull 14 + amps. That's equivalent to the output from a moderatly high current 12 V automotive battery charger.

A thought occured to me that (1) most peltiers will run fine with anywhere from 12-15 V, (2) if you were to 'series' wire 9 peltiers together you would be able to connect them accross a 135 V source, (3) if you bridge rectify & filter line current (120 V +/-10%) it's max voltage would be 135 V DC with all the current you'd need.

Radio Shack parts, bridger rectifier, moderate size capcitor, fuse, plastic case (would probably cost about $15-20 (make sure to use in-line fuse) and fit in something half the size of a coffee cup with very little heat generated. Without the expertise of someone with electronics knowledge, I'm not sure of how big a capacitor you'd need.

Nine 70 W peltiers would allow you to stack 3 to cool CPU, 2 to cool memory, 1 for chipset, 1 for video card CPU, and 2 for video card memory.

Alan

[RangerJoe]

Originally posted by Morbid
This isn't on the subject.. I just wanted to ask Ranger Joe if that is his car in his avatar? I LOVE Ferrari Modena's.. well, I love all Ferrari's. They're my dream cars :D
:burn:

sadly no, but the guy that owns it..his friend lives right down the street from me...next time he is here, im gonna go ask to get a ride