Environmental Engineering Reference
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where utility service is nonexistent. In a variable-speed system it is necessary to match
the performance characteristics of the turbine, motor, and pump components over the speed
range expected.
Another system for pumping water solely with wind power is illustrated in Figure 4-8,
in which two different wind power sources are used in tandem. The well pump is driven
mechanically by a multi-bladed windmill, lifting water first to a ground-level storage tank.
An electrical
booster pump
powered by a small-scale wind turbine is then used to distribute
the water to higher elevations. Shown here is a typical commercial system that uses this
approach, combining a 6-m-diameter windmill, which drives a reciprocating well pump, with
a .5-m-diameter, 600-W HAWT for powering the booster pump.
Figure 4-8. Diagram of a tandem wind-powered system for pumping water.
A windmill
drives the well pump, while a wind turbine powers an electric booster pump for the distribu-
tion system. (
Courtesy of Wind Baron Corporation
)
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