Non electric ceiling fan is one which is powered by a wound up spring, just like how a winding up clock works. The fan is wound by an oversized feature that looks like a “key”, has two teeth that fit into the fan gear and works with a simple crank handle.
How it Works
You have to pull on a chain every half hour to keep the Non electric ceiling fan running. When you pull the chain down, a weight is sent back to the top. As it turns, the weight works its way back down and makes the blades turn.
The Science of Its Action
As the weight falls and turns the fan, the Non electric ceiling fan is doing work on the air and raising the temperature of the air. However as the air moves faster, it gives up energy, which cools the air around you.
Water Motor Non-electric Ceiling Fan
They use a water motor to drive the blades. This is a small impulse turbine and it drives the fans through round leather sewing machine- like belts. You can use this type if you have a spring that runs continuously and has a high head.
This type of fan is useful in areas where there is no electricity.
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