Advice on TEC cooling

[PanaBob]

Hey all, I'm getting 12C @ 2.6Ghz idle, 16C load for about 15 mins (before my small PC room gets really hot from the rad + deltas). Then temps are going up to about 25C after the room gets warm. I'm thinking if I duct the hotair directly out of the room, and double my flow rate from a Via Aqua 1300 to a 2600 (760gph), as well as increase the pressure on the CPU I can significantly drop my temps? I'm going to put some washers on the maze4 for more pressure. I got another delta on the way too.

current setup:
13.8v 25amp TEC (320watt)
PSU: 13.8v DC 25amp continuous power
Maze4 w/ 1/2" ID tubing
Via Aqua 1300
AMD 2500+ M 1.75v 2.65Ghz
nice sized heatercore, 1/2" ID inlet/outlet
1x150cfm delta, 1x75cfm evercool (got some more deltas coming)

I'm using my temp probe from the NF7-S, but I have an extra external one too. I think that with the PR3ACHER BIOS the temp readings are accurate enough.
what can I do to maximize my results?

:toast:

[i_jester]

If you stop venting the heat into the room, it will definitely help as the room air temp dictates how much heat will transfer from the heat exchanger(s).

I am building a new house and am adding a custom ambient a/c for my computer/media room.

[gkiing]

You will definatly get the biggest performance boost by venting the hot air out of the room. The TEC will only perform well if it is adequatly cooled.

[JRY]

sorry if ott
wot multipliers u using to get 2.65ghz m8?

[PanaBob]

"sorry if ott
wot multipliers u using to get 2.65ghz m8?"

I'm using a 12x220 till I redo my L12 mod, which takes me to 235.
Thanks for the tips guys, so all else equal, how much does double flowrate affect performance with a Maze4?

[JRY]

at 1.75V that's SWEET!!!
i've got 2 up mine till 1.9v for 12x multiplier :(

[saaya]

your using a maz4 to cool the 320W tec?
what rad are you using? how hot is the hot side of the tec? do you have any pics? :D

i just received a 227W tec and a 155W tec today (bought them together for 35$ :D) and im looking for infos on whats the best way to set them up. i think i will power the 155W one with a cheap 350W psu and the 227W one with an enermax 350W psu.
the nermax only has 17a on the 12v rail, do you think it can power the 227W tec?

[PanaBob]

Yeah I'm using a Maze4, with a good size rad. I boarded up my window and cutout a rectangle. I got my two deltas sticking out of the room cause it was causing insane amounts of heat in here. I need to get a digicam, it looks awesome right now.

[saaya]

well yeah, a 227W tec alone produces around 400W of heat, no?

227W comes from itself and it sux 175W from the cold side and pumps it to the hot side.

[PanaBob]

So I'm at 500watt for TEC + 125watts CPU + 20 watts pump? If thats really so then my 12x8.5 inch rad can't handle that heat, even with almost 300cfm going through it....

[saaya]

why 500W?

the way i understood it a 227W tec always pumps around 175W, no matter how much heat is generated on the cold side. it will always pump that much of heat, theres no insulation thats strong enough to prevent it from sucking the 175W of heat on the cold side and dissipating it on the hot side.

so no matter how hot your cpu is, the hot side of your 227W tec will always dissipate 400W of heat and the watts your cpu dissipates really dont matter.

if the cpu dissipates 100W then the tec will suck that 100W from the cpu and the rest of the 175W it moves from the mobo and through the pcb and whatever else its connected to. if the cpu only dissipates 40W then it will suck those 40W and 135W from the mobo and what else it is connected to. etc...

but im not sure if i got it right.


and heatercores from a car are built to dissipate a few kilowatts at max... but then again, thats with a car driving with 100mkh+ wich means a huge amount of air is getting pumped through the heatercore...

[freecableguy]

I was under the impression that you calculate loads like this: 226W TEC + 130W (say maximum heat dissipation for your CPU, you'll need to calculate this separately) + ~25W for the pump (depending on what model you use) = 381W for me.

My rad (a dual 120mm rad) claims to be able to dissipate 400W of heat at a 5C temperature differential (water to room).

[PanaBob]

Yeah thats how I also understood it...
13.8v x 25a is roughly 325watts, 2500+ M @ 2.65Ghz 110watts, pump 20watts so 450watts of heat?