The speaker demonstrates how to build a homemade mini fridge using a heat exchange plate, two heatsinks, thermal paste, and a 12-volt power supply. The fridge is constructed using styrofoam and aluminum foil for insulation, and the heat exchange plate is used to generate a temperature difference between two sides. The speaker also uses a cooler to improve the heat exchange process.
The fridge is initially built with a single heatsink, but the speaker later revises the design to improve efficiency. The final design includes two large heatsinks and a cooler, with the heat exchange plate placed between them. The fridge is then tested, and it successfully cools a can of soda to a temperature of 5.6 degrees Celsius, which is very cold.
The speaker concludes by saying that this homemade fridge could be used to store frozen items, and he invites viewers to test it themselves.
Here are the key facts extracted from the text:
1. The text is a transcript of a video about how to make a homemade mini fridge using a thermoelectric plate, heatsinks, coolers, styrofoam, aluminum foil and other materials.
2. The thermoelectric plate has the property of getting very hot on one side and very cold on the other when electricity is applied to it.
3. The heatsinks and coolers are used to improve the heat exchange between the plate and the air, and to prevent overheating or freezing.
4. The styrofoam and aluminum foil are used to insulate the fridge and to reflect infrared radiation that could warm up the inside.
5. The fridge is tested with a thermometer and a thermal camera to measure the temperature inside and outside, and to identify any heat leaks or flaws in the design.
6. The fridge is able to lower the temperature of a can of soda to 5.6 degrees Celsius, which is comparable to a regular fridge.