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Windmill 5

Water-pump windmill

(Click to enlarge photo)

Not one of my machines this time. I have included the photo because it is a good example of a low speed high torque design often used for pumping water. Because the rotor presents a large cross-section (or swept area) to the wind, the machine can pump effectively even at very low wind speeds. This type of machine is highly susceptible to storm damage and usually has a brake, or quite often a release mechanism that turns the tail fin causing the edge of the rotor to face the wind, thus offering very little resistance and massively reducing the chance of damage. It is possible to generate electricity with this type of machine but a large gear-train would be necessary if using a conventional alternator or generator.


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©2014 FIRECRACKER™GUW ALL RIGHTS RESERVED