Aerogen 4 Wind Turbine Hot

Aerogen 4 Wind Turbine

Although the Aerogen 4 can be used on yachts and cruisers, this small turbine is more suited to land applications than its close relative the Aerogen 2.

It is typically used for street lighting, remote telemetry and data loggers, or could make a small contribution to charging batteries for remote properties or on mobile homes or caravans.

Wind turbines

Swept area

The Aerogen 4 has a blade diameter of 0.87 metres. This means it has a swept area, or capture area of 0.59 square metres. This is all important when comparing wind turbines, since it directly relates to the amount of passing wind energy the turbine blades can intercept.

Aerogen 4 power output curve

The graph below shows the power produced (in watts) for the Aerogen 4 at different wind speeds, based on data supplied by the manufacturer.

The green line shows the actual output that the wind turbine achieves at the given wind speed, according to the manufacturers.The dashed line in the graph shows the theoretical maximum energy that this turbine could extract from the wind, according to Betz's Law (59.3%). At a typical wind speed of 5 m/s, the Aerogen 4 is extracting 14.38 Watts of power from the wind, which is an efficiency of 31.47%.

If you want to install a wind turbine, it is very important to measure how much energy you might produce.
Learn more about the Power Predictor

How efficient is the Aerogen 4?

Wind turbines can only convert some of the energy in the wind into electricity. The graph here shows how efficient the turbine is across the range of wind speeds you might get.

The orange line in the above graph shows the efficiency ranging from 0 to 1. The grey line is the previously mentioned maximum efficiency - The Betz Limit. If this limit is exceeded, the manufacturer's claims are not to be trusted!

While these graphs give an indication of the instantaneous power and efficiencies you might expect from the Aerogen 4 turbine, working out annual power production is more complex.

Read more about the Power Predictor

The Aerogen 4 wind turbine in action

An Aero4gen in operation in low winds, filmed by a British enthusiast.

video credit: tonjg

Power output
A small, lightweight turbine with limited power outputs, but probably enough to keep a small battery topped up.
An aerogen 4 would typically set you back somewhere between £600 and £700 (ex. VAT). Additional costs are mounting (possibly £80) and battery regulator ( about £100).
Blade diameter
0.87 metres
Rated output (W)
UK grants available?
1 year guarantee
12 Volt • 24 Volt
Comments (1)Add Comment
written by graham jensen, February 01, 2010
wanted spairs for aerogen 12 volt wind genator

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