Originally Posted by zipdogso
Firstly to say the DT will 0 is just talking off your hat you have not tried undervolting TECs.... plus you will get more than 50w each out if you do a proper performance chart OK not much but multiplied by 10...
Depends what you want...if you want sub-zero OK BUT if like everyone else on the forum you just want a bit of cooling a DT of 7Âº-8Âº will be very nice with good cooling on the hotside which will be the key..... and dam cheap too at 90w in and 500w out....only 1 power supply instead of 3. Costs start coming down...if you want a power hungry TEC setup like everyone else moans TECs are, then fine ...
It looks i did misread the chart a bit. Taking another look... powering at 6V it would use about 5A, in thic case qmax seems to be around 75w@dT=0. 50w could be moved @ dT about 10Âº. But 10Âº difference between hot and cold side seems barely usable to me.
I should explain my idea for waterchiller a bit more. Its all about reserves and efficiency. Using 10 CP1-12726 Tecs (Charts here http://www.overclock.net/attachments...ifications.doc
) max cooling power when running at 15v would be 2400w Qmax and use 4000w of electricity.. so i would need my own powerplant
undervolted at 6V max cooling power is 1200w Qmax@ dT=0 while using about 780w of power. So this is the maximum cooling power that i need my chiller to be capable of. My goal is to cool 500w, by having 1200W Qmax, i can cool 500w at dT 30Âº. But that is just another maximum with plenty of reserves.
Efficiency comes from power management. I got the idea from Ultrasonic2 project http://www.overclock.net/peltiers-te...rasonic2s.html
So with power management I can later decide what i want... near ambient temps and good efficiency(low power usage) or go for lowest temp possible and use up to 780w of power.