Testing different Peltier coolers by cooling/freezing water - Part 3/2 - TEC12706

This is another video series, where I try to systematically test the Peltier devices I have. This is the third experimental part where I test the TEC12706 again, with some changes in the setup. I try to determine the point where the water reaches 0°C and see how much time it took to get there. By combining the time and amount of pumped heat, I can compare the values to my calculations and see if they are in an agreement or not. This experiment proves nicely that either you can tune your system to provide large temperature differences (high DT values), or to pump large amounts of heat (high Qc values), but both will not work. If you try to achieve good cooling (i.e. you want to remove heat from a system), you need the high Qc values. Therefore, you cannot create large temperature differences, because you create high cooling power instead. Remember, when a Peltier creates large temperature differences, it will not pump large amounts of heat, so it will NOT cool anything down. There will be some negligible amount of cooling power, of course, but the losses are usually larger than that...