Solar heater
grabcad
This DIY solar heater is a cost-effective and eco-friendly option that uses upcycled beer cans. It requires 64 empty 0.5L beer cans, 6-8 pieces of wood, and some glass panels. The passive solar heating system can efficiently heat your room during the day, even in cold temperatures, reaching up to 50°C. Constructing this heater doesn't require any money spent on electricity grids. Please feel free to share updates or ask questions about this project!
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