This is a simple design part to one of my DIY.
Full description here:
What does it do? It converts heat energy into kinetic energy, looks nice and sounds awesome!
It uses a thermoelectric generator module (TEG) to power a motor with a fan. The heat source (candle) heat up the lower aluminium plate => creates a temperature difference over the module => generates electricity to the motor => increases air flow through heat sink => increases temperature difference => more power. Without the fan it would eventually stop generating power since the heat sink would get almost same temperature as the plate.
Almost any heat source with enough temperature can be used to power the motor and this makes this small device easy and fun to experiment with. As seen in the video it´s powered from fire, hot water, food, and even used to cool a computer processor. The latter is an idea I had when i created my first build in 2013 and people said to me it cannot be done. It can and it´s stable for normal use but with further optimizations it could probably be even better. I don't think it can replace a regular CPU cooler but as it uses no electricity from the computer it´s somewhat environmental friendly.
It require few parts, easy to build and you do not need any knowledge about electronics. You just need some mechanical tools for cutting, drilling and polishing the aluminium.
For design purpose you can print this special part if you have a printer and transparent filament like T-glase.
I used a wanhao duplicator 4x printer and simplify 3D software.
Layer height: 0.37mm (single outline corkscrew method (vase mode)
Top and bottom layers: 0
Extrusion multiplier: 1.15
Extrustion width: 0.5mm
Speed: 600mm/min (10mm/s)
Temp extruder: 235C
Temp bed: 80C