An Ecofan is a heat-powered fan that uses a thermoelectric module to convert stove heat into electricity.
The Ecofan operates by harnessing the Seebeck effect: when one side of the thermoelectric module is heated by the stove and the other side remains cool, it generates electricity to power the fan blades. This creates air circulation without needing batteries or external power sources, improving heat distribution from wood stoves.
How the thermoelectric module generates power
- Heat from the stove warms the bottom of the module
- Cooling fins on top maintain temperature difference
- Temperature gradient creates voltage to drive the motor
- Fan speed increases with stove temperature
Benefits of using an Ecofan
- Reduces fuel consumption by 14-18%
- Distributes heat 38% faster than no fan
- No operating costs or batteries required
- Silent operation
Ecofan vs traditional electric fans
| Feature | Ecofan | Electric Fan | Battery Fan |
|---|---|---|---|
| Power source | Stove heat | Electricity | Batteries |
| Operating cost | None | Electricity cost | Battery replacement |
| Portability | Fixed to stove | Requires outlet | Limited by batteries |
| Environmental impact | Low | Medium | High (battery waste) |