Recently I tried to cool water with one TEC1-12706 (waterblock+tec+cooler) but for a lots of reasons (that I am now aware) it didn't cool water (1L in a closed cicle) under or even near 0ºC. I rethinked and made some calculus and I concluded that maybe 4 TEC1-12708 should be enough.
The problem is that peltiers need to be well cooled, so I started to build another water refrigerator (bigger waterblock+4 peltiers+aluminium to dissipate heat+fans) but I realized that is a way more expensive (and i'm student) than buy the sets already made.
My question is if this set that I'm thinking to buy is sufficient to dissipate the heat of the hot side of the 4 peltiers. Peltier set image: https://imgur.com/sEw4UiN (assuming that cool side is turned to wateblock).
If not sufficient what are the other cheap ways to dissipate heat?
Thank you and sorry about my english.