How to building your own Thermoelectric Chiller

>> Your TEM is power rating is at 12V x 6A = 72W of Electrical Power. As for your "cooling" Qc , is should be around 45W it should be able to cool a 1ft cube. How big is your tank ?

==> My tank is 17"L x 9"H x 8"W in size, but the water capacity only about 20L because of the base substrate for this planted shrimp tank is about 2" height.

>> Try Touching your heatsink . Is it very hot ? It vry hot , Your heatsink is not big enuff to dissipate the heat conducted away from your cold plate plus heat generated by your TEM ( Due to its internal resistance )

==> i scan the heatsink with infrared thermoscan, it show less than 45C, i belif that the heatsink is big enough for the purpose.

>> To get ice forming is easy . There must be something wrong with you setup.
Its always the fan or the heatsink thats causing the problem. What the rating of your fan you use to cool your heatsink ? Have you use Thermal grease on the joint between your heatsink and TEM ?

==> I just couldnt get ice forming on the cold fins cos the most min temp get is only 21C at the cool fins. My fan is 12V 0.4A rating, it is a power fan for PC overclocking use. Yup, i use thermal grease on both side of the TEM.

>>Don't be disappointed. If it still does not work bring your unit over to my place i help you troubleshoot.

==> Ya, appreciate ur help, thanks bro. anyway, where u stay, in case really need ur specialist advices in future.