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Basic questions about tec setup

post #1 of 7
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Long time lurker in the forums, first time poster. I am looking into setting up a direct contact tec cooler on my amd 1090t and have a few questions. I am already running an xspc rasa waterblock with a 360mm radiator and a 120mm radiator. With this setup I am limited by heat transfer between the cpu and the cpu block, so tec cooling seems like a good choice. My questions are what wattage tec would you recommend, and where should I purchase it from. Would i be able to use my current waterblock to cool the hot side of the tec? Also, would something like this http://www.mfjenterprises.com/Product.php?productid=MFJ-4230MV work well as a power supply. The reason I want to use this psu is because it has variable voltage and since it is 5 inches wide should pretty easily fit into 5.25 in drive bays.
post #2 of 7
you'll need atleast 2x3xx watt peltiers with a custom block and 2/3 rads sorry redface.gif
 
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post #3 of 7
Quote:
Originally Posted by benk95 View Post

Long time lurker in the forums, first time poster. I am looking into setting up a direct contact tec cooler on my amd 1090t and have a few questions. I am already running an xspc rasa waterblock with a 360mm radiator and a 120mm radiator. With this setup I am limited by heat transfer between the cpu and the cpu block, so tec cooling seems like a good choice. My questions are what wattage tec would you recommend, and where should I purchase it from. Would i be able to use my current waterblock to cool the hot side of the tec? Also, would something like this http://www.mfjenterprises.com/Product.php?productid=MFJ-4230MV work well as a power supply. The reason I want to use this psu is because it has variable voltage and since it is 5 inches wide should pretty easily fit into 5.25 in drive bays.


That power supply would work nicely. You'll want AT LEAST a 280 watt qmax peltier, though for best results you should go for something along the lines of 345watt qmax. For cooling the peltier, no your current water block isn't sufficient. For best results you'd need to have a custom one milled. Since that isn't an option for most people, you might be able to make due with an Apogee XT waterblock. The Apogee XT has a LOT of surface area, much much more than most lane based waterblocks. It's pins cover about a 55mm area, so it could, in theory, handle a 50mm peltier, or if you use a quarter inch copper hotplate you might be able to get away with cooling a 62mm peltier.

As for radiator area: You really want to keep the hotside as cool as possible, and a single 360 radiator normally has about 250 watts of cooling at a 10Celsius delta temp. A TEC moves heat from one side to the other as well as adding it's own. At 16 volts you're probably looking at around a 500watt heat load your rads have to cool, so you'll want at least 6.120mm radspace.


Mind you it is absolutely necessary to properly insulate your motherboard and water block if you're going to use peltiers. That means dielectric grease in the socket, painting the back of your mother board in liquid electrical tape, using kneaded art erasers around the peltier, and sealing the area around the kneaded eraser/peltier/waterblock with liquid electric tape.

Peltiers offer below ambient cooling and will usually reach the dew point while not at load, so this means you need to have the area around it sealed so moisture in the air can't come into contact with the cooled area.
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post #4 of 7
The PSU would work as far as output goes, but I would not run it inside a drive bay.

PSU's release a ton of heat, and need to be vented outside the case.
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post #5 of 7
Quote:
Originally Posted by Puck View Post

The PSU would work as far as output goes, but I would not run it inside a drive bay.

PSU's release a ton of heat, and need to be vented outside the case.

Look at his PSU again. The front panel contains no fan port, just a meter and some control knobs. He could easily jury rig it in his drive bays, assuming he leaves adequate ventilation to wherever it's vent is, assuming it has one. If it does have one, then it's a pretty odd design on the PSU.

As long as he allows itadequate ventilation it should be fine.
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post #6 of 7
Quote:
Originally Posted by ZytheEKS View Post

Look at his PSU again. The front panel contains no fan port, just a meter and some control knobs. He could easily jury rig it in his drive bays, assuming he leaves adequate ventilation to wherever it's vent is, assuming it has one. If it does have one, then it's a pretty odd design on the PSU.

As long as he allows itadequate ventilation it should be fine.

I meant vented outside the computer. The front of bench PSUs never have any venting, that is usually on the sides or rear. The one he listed has vents on the side, but those are probably just intakes for a rear facing fan - which means it will literally be blowing hot air inside his case if he puts it inside a drive bay.

Popping it in a drive bay will just dump all the heat into the case, raising it over time - not only bad for component temps, but also makes condensation issues much worse.
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post #7 of 7
Quote:
Originally Posted by Puck View Post

I meant vented outside the computer. The front of bench PSUs never have any venting, that is usually on the sides or rear. The one he listed has vents on the side, but those are probably just intakes for a rear facing fan - which means it will literally be blowing hot air inside his case if he puts it inside a drive bay.

Popping it in a drive bay will just dump all the heat into the case, raising it over time - not only bad for component temps, but also makes condensation issues much worse.


Couldn't he just pop an exhaust fan next to it, as well as an intake fan somewhere near the other side, and create a cross flow air current, venting the heat out? I wouldn't imagine a 480watt (16v * 30amp) power supply would generate that much heat. I mean, my 1000watt Fatal1ty series PSU doesn't even generate that much. Then again, the only Auxiliary Power Supply I've ever worked with was a 12v 200 watt one used for a sub woofer, so maybe I shouldn't be debating with a TEC guru XD
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