TEC waterchiller

[hollo]

i just had a great idea - gotta share it

set it up with 9 peltiers
eg. Pin from your 10.5-13V power supply:
min (((10.5 / 3) / 15.2)^2) * 121.6 * 9 = 58.0263158W
max (((13 / 3) / 15.2)^2) * 121.6 * 9 = 88.9473684W - high enough??

set up the 10th peltier between a waterblock and air-cooler, like the others, but connect it to a small amplifier circuit that is connected to a relay so that when it generates a certain voltage due to the water (water-block) temperature being lower than the ambient (heat-sink) temperature it will deactivate the entire peltier loop.
(i'm not sure what the circuit would look like, but it'd be pretty simple)
it'd be perfect because condensation is dependant on the difference between the loop temperature and the ambient temperature rather than an absolute temperature. it'd just need a circuit that was quite sensitive to (or good at amplifying the) current from the peltier so a water temperature 1-2 degrees below ambient would be enough to shut the circuit down.

it'd be a cool 'feature' for day to day usage