I'm looking to experiment with creating a thermal battery that's not industrial-sized but still something I'd be proud of. My challenge is figuring out the best way to convert thermal energy into electrical energy using accessible methods. While Peltier modules are the simplest option, their low efficiency doesn't feel right to me. I've considered Stirling engines, but the ones available for purchase are almost just toys, and I don't have the tools to build a more efficient version myself. I've also thought about steam turbines, but finding efficient ones is tough. I'm contemplating using a cheap turbocharger setup but I'm a bit wary about managing pressure and corrosion properly. I'd love to hear any fun suggestions or ideas you might have!
1 Answer
It would help to know what kind of temperatures you're working with! But if you're aiming for something under 100C, using a low heat experiment to start is a smart move.
I’m planning to fill an insulated bucket with sand and use heat piping to transport the heat. I’m also considering using some retractable heat pipes controlled by an ESP32 to manage the heat extraction. Since sand can handle really high temperatures, I think I'm good there!