Swept area
The Enwia E40 has a blade diameter of 10.00 metres. This means it has a swept area, or capture area of 78.54 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.
Enwia E40 power output curve
The graph below shows the power produced (in watts) for the Enwia E40 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 Enwia E40 is extracting
2450 Watts of power from the wind, which is an efficiency of
40.58%.
How efficient is the Enwia E40?
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
Enwia E40 turbine, working out annual power production is more complex.
Read more about the
Power Predictor
E40- 40kW, including 18m mast, cables, inverter & controls system, ready to connect to the 400V grid, comes in at 55000 EUR, or 49,495 GBP
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We are interested in a dealership for Belgium or( BeNeLux). We are looking for high quality windmills of 40 Kw.
The E 40 seems a good windmill.
I like to get a technical discription and de dealer pricelist.
Whats the time for delivery of 2 x 40 Kw
vriendelijke groeten
Olaf