Peltier based cooling box - Refrigeration test
In this video I test the previously built cooling box with a minimal load. I put 2 bottles of water (2x2 l) in the box and ran it with the same specifications as previously. Both Peltiers were running at 6 A. The cooling was slow. Based on my calculations, the water would reach 4°C after 9.5 hours. So, maybe it is possible to cool something with this overnight. My suggestion is to add 3-4 of this water bottle, cool it down to roughly 4°C, then add the things that you want to cool. The already cold water would act as a buffer, so it would be easier for the Peltiers to keep the system cold. But for better performance, the number of Peltier coolers should be increased.
Temperature measurements
Evolution of temperature during the experiment. The linear fitting is used to predict the time needed to cool the water to 4°C.
