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DIY Portable Mini Refrigirator

Comments 25

  1. Wonderfully made. Nice engineering. Before anyone gets too excited about using Peltier modules for cooling do some research on not only their capacity for cooling, but also their efficiency levels… You will be disappointed. Regarding 'keeping' things cool these little refrigerators work ok (still high power consumption for the cooling), for bringing room temperature cans of soda down to cool temperatures, ahh, not so practical. I don't consider these products to measure up to anything near what I would call 'green'.. They consume a lot of energy and provide small cooling benefit. Again, don't believe me, do your own research.

  2. That is some powerful cooling, I see you used a Peltier module and a huge heatsink with two fans. However, it's a bit too powerful. Because it reaches a temperature of -2.5 degrees Celsius, your drinks and snacks will freeze. You need to use something to regulate the cooling, like a microcontroller that switches the module off after the desired temperature is achieved and then back on when the temperature rises too high. Worth noting is that the hysteresis needs to be high enough to not make a oscillator. A good idea is to buy a thermostat kit or a pre-made thermostat that can handle low temperatures well. This way no microcontroller ia needed.

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