Hello! I am trying to cool 6 Peltier tiles. They are 12v 5a. I have them sitting on top of aluminum cooling blocks connected to a dual fan 240 radiator. I am finding that the 240 radiator isn't coming close to cooling the hot side of the tiles enough. A large bucket of ice water works amazing, but is not sustainable. Space and weight are significant concerns. Does anybody have any ideas?

 

I've never seen any solution other than a finned aluminum heat sink with forced air. There are online models available to estimate the required size, airflow, etc.

 

To effect cooling there must be an adequate conduction path for the heat energy. That means no air-gaps in the heat path at all. There are some application notes that describe both the capability and the methods of using solid state heat transfer devices.