Aerogen 2 Wind Turbine Hot

Aerogen 2 Wind Turbine

A very small wind turbine designed primarily for battery charging on boats or small contributions to household electricity and other low power land applications.

To cope with constantly varying conditions such as those aboard a yacht or weekend cruiser the Aerogen series can withstand very high winds and general adverse weather.

Wind turbines

Swept area

The Aerogen 2 has a blade diameter of 0.54 metres. This means it has a swept area, or capture area of 0.23 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 2 power output curve

The graph below shows the power produced (in watts) for the Aerogen 2 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 2 is extracting 6.67 Watts of power from the wind, which is an efficiency of 37.88%.

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 2?

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 2 turbine, working out annual power production is more complex.

Read more about the Power Predictor

Power output
A very small machine for battery charging, that even in a very strong wind will only produce about 50W of output.
Turbine is £350-£480, mounting is £40-£90 and a battery regulator is £80, all ex. VAT.
Blade diameter
0.54 metres
Rated output (W)
UK grants available?
1 year guarantee
12 Volt • 24 Volt
Comments (1)Add Comment
written by Davey, August 11, 2010
There used to be an Aerogen 3 which had a bigger propeller on it and different windings. This had a better output. Last year a friend was asked to look at a "faulty" Aerogen 2. It was on a boat that was moored near Saltash Cornwall. The problem was that the current being produced varied between 0.5 and 1 amp in a fair breeze and the owner was unhappy. Current of about 1 amp or less is normal for the Aerogen 2. The rated output is 85 ampere hours per week, ideal for weekend sailors NOT live-aboards. Nowadays LED (light-emitting-diode) lighting can be used to minimise current drain. As to solar panels these don't work at night and they don't work in fog or in misty overcast conditions.

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