2 tecs on 1 meanwell ?

[Thickbrit]

Will my meanwell sp320/24 (http://www.meanwell.com/search/SP-320/default.htm) be able to run 2 172w/24v tecs ( Qmax=172W, Imax=11.3A, Tmax=69C, Vmax=24.6V ) at 16v on each or will the amps be too much ?Thanks.

[Holst]

The sp320/24 is only rated to 13amps.

Two TEC might pull as much as 22.6.

It will just trip out if you connect two as thats 10amps over spec!!! Dont try it!!! You will either damage the PSU or trip it out.
It definately wont work anyway.

You will have to buy another PSU to run a second TEC :(

[Premmer]

Will my meanwell sp320/24 (http://www.meanwell.com/search/SP-320/default.htm) be able to run 2 172w/24v tecs ( Qmax=172W, Imax=11.3A, Tmax=69C, Vmax=24.6V ) at 16v on each or will the amps be too much ?Thanks.

No, but this one will. http://www.sidewindercomputers.com/samam32inpsu.html

[Thickbrit]

Thanks guys,will the one you linked me to have enough voltage,its only got 12v +/- 10%.I have noticed my temps better at 16v as opposed to 24v,but surely 12/13v isn't enough ?Thanks.

[Blindsniper]

TECs are alot more effective when undervolted but I would not suggest that for you because your TEC are not powerfull enough.

[Holst]

Effective is the wrong word.

I think you meant efficent.

Undervolt too much and your CPU overwelms the TEC and your temps go sky high.

Best bet is an ajustable PSU like I use. That way you can tune the TEC for best temps at lowest voltage (always at 100% CPU load of course)

[Thickbrit]

Ok,i want to run two 172w/24v tecs in maze 4-1's to cool my x1800's.I chose the 172/24 because it's the largest that fits in a 4-1,i chose the 4-1 because i have lots of them.Currently i have one x1800 on a 172w tec in a 4-1 powered by the sp-320-24,cooled by a thermochill 120/2,two 90cfm panaflo's and a c-systems 750.The other x1800 is still on stock cooler.I Have found my single tec setup runs best at 16v as opposed to its rated 24v.You guys have already told me that my sp-320-24,cant handle the amps of 2 tecs even at 16v,so i'm now thinking about another meanwell,but i dont have room for anything bigger than the sp-320-24.Would the s-350-15 be a better choice ?,it has 16.5v max and 23.2 amps max.I have a bigger pump to boost the cooling loop to deal with the extra heatload.I'm still expecting the water temps to increase and am i right in thinking this may mean the tecs might require even less voltage for peak efficiency and that the s-350-15 is ideal ?

[ls7corvete]

the 172 units pull 6a@12v and 7.73A@16v so you do the math.

Remember, you can run in series too, try both tecs in series on that PSU adjusted as high as it goes and see how that goes.

[Holst]

the 172 units pull 6a@12v and 7.73A@16v so you do the math.

Those are not the biggest TECs you can fit in the maze, the 320 is.

Remember, you can run in series too, try both tecs in series on that PSU adjusted as high as it goes and see how that goes.

Thats a gopod idea, might be worth trying that before you spend any money.

[Thickbrit]

Thanks for your patience guys,i'm sorry i don't understand this kind of stuff,just not my speciality,hehe.Yes,i understand that i can run them in series,that would be like 48v,which i could run at 28v (psu max),but i'm struggling to understand what current (amps) i'd be drawing.I have tried to work it out and came up with 12.8A,which puts the psu on the limit,is this ok ?.Can anyone suggest 2 better tecs (to fit maze 4-1) for my current psu (18v-24v,13amp),as i'd obviously rather buy 2 new tecs than a new psu,especially as i haven't got the 2nd 172w yet.

[ls7corvete]

Thanks for your patience guys,i'm sorry i don't understand this kind of stuff,just not my speciality,hehe.Yes,i understand that i can run them in series,that would be like 48v,which i could run at 28v (psu max),but i'm struggling to understand what current (amps) i'd be drawing.I have tried to work it out and came up with 12.8A,which puts the psu on the limit,is this ok ?.Can anyone suggest 2 better tecs (to fit maze 4-1) for my current psu (18v-24v,13amp),as i'd obviously rather buy 2 new tecs than a new psu,especially as i haven't got the 2nd 172w yet.

You run the TECs in series, thus each TEC sees a voltage potential of only 12v(PSU supplys 24/2=12v), each TEC will draw only 6a at this voltage and only put a load of 6a on the PSU (devices in series draw the same amperage).

I would strongly suggest that you try this as the high heat load of running two TECs at full voltage will most likley offset any gains you get from the larger dT and cooling capacity of the higher voltage(in your slightly underpowerd cooling system anyways, no offense). Plus, you got most of the stuff already.

[Tenkaipalm]

Hmmm... I'm having this same dillema- Running the TEC's in series will be more efficient than just running them parallel on the meanwell S320-12? Or should I just buy two meanwells? Or should I just forget it and go straight water? I've run 80w TEC's on older cards before with good results, so I would love to run two 172w on SLi'ed cards. Also, I'm using a Turbocool 1KW PSU. Would that have enough juice?

[Revivalist]

Just out of curiousity, where did you find a 172W TEC that is 40mm x 40mm to fit inside a Maze4-1 GPU block?

[n00b 0f l337]

www.dangerden.com

[Revivalist]

www.dangerden.comAh, of course. I forgot that I ruled that one out because I'm not running a 24V Meanwell.

[littleowl]

where other then ebay can I go to get a 12v switching power supply for my tec/tecs!!:stick:

[ls7corvete]

mpja.com is one of my favs, any other surplus electronics site, goldmine electronics, alltronics etc.

[littleowl]

so what should we look for! 12v 10a or what?

[ls7corvete]

so what should we look for! 12v 10a or what?
What TECs are you using? How much heat load are you cooling? What are you cooling with?

Its important to match the voltage to the TEC, heat load and cooling, that way you get the optimum temps. NOTE highest volt is not usually the best with TECs.

Perhaps you should start a new thread with system specs.

[littleowl]

Is
I am at the moment running a amd 64 3200 with a 226 50x50 from dd! I cool with a really nice water loop! I am wanting to put a 226 on my 7800gt as well!

[ls7corvete]

max power from that TEC is 24 amps. I am guessing that you will be running at 12v which will use less amps but lets go with 24 anyways to give you some room to work with.

You want two so you better get a ~12v unit that does about 50a. Nice to have an adjustment, not very likley that the best voltage for you will be exactly 12v. Wouldnt hurt to find out what the best voltage is for you in kryotherm before you buy something.

[littleowl]

I want to make sure it is adjustable! I looked through a couple of sites and have not seen anything that had very many amps!!

[ls7corvete]

Thats alot of power, you will probably have to get two.

[littleowl]

that stinks!!!!! I guess I will just leave it on water and no tec with it!! I thought it would be a pain anyways!! it looks like I would have to make copper spacers to put a tec on so I will just forget that idea! what do you guys think!!???