Following up on our previous post where we discovered a big temperature differential between our peltiers during testing, we installed bolts and nuts to the clamp to secure each individual peltier/cooling block to enhance contact. We also began with 0.9 pwm from the beginning so that we could achieve ice faster. Here’s the results from our new experiment:

Ice formed quite fast from the start, largely due to the high pwm value from the start but was pretty cloudy.

However, we realised that there was likely to be greater contact between the ice mold and the peltiers with the new clamp, since the temperature differential between the peltiers are reduced quite a bit and the temperature is more consistent between them. There’s also a greater drop in temperature from the start compared to past experiments, which means greater loss of heat from better contact between  the peltiers + water block + ice mold. Hooray!! Hopefully, if we slow down the cooling by reducing the pwm value, we can get clearer ice.