We are year 2 students studying Product Design Engineering at University of Glasgow/Glasgow School of Art.  Our brief was to design a wind powered generator in the most efficient manner.  And here is how we built ours! In short our wind turbine is a horizontal axis turbine with the addition of a nozzle to further increase the wind flow.  There are four main components: the nozzle, the blades, the stand & shaft and the gearing & generator.

Step 1: The Nozzle

thin, bendable sheet of plastic or any other material that can be used to build a cone
two boards of MDF or any other sturdy material
glue, tape

For the nozzle we chose an arc with a radius of 61cm made of a thin and bendable sheet of plastic. The angle depends on the size of the stand for the nozzle but it is helpful to have sufficient material overlapping as this makes the procedure of taping/gluing the cone much easier. In our case, we decided to use tape as it was quicker to apply and seemed to be stable enough to keep the cone in form.

The stand for the nozzle was made out of 1.8cm thick boards of MDF. The dimensions we used can be taken from the photo below but can also be modified. If choosing different dimensions it is important to note the following:
- the greater the inlet area, the better as it catches more wind
- the smaller the outlet area in comparison to the inlet area, the greater is the difference in speed (the outlet velocity is greater than the inlet velocity) which leads to an increase in kinetic energy the rotor is able to catch
- the diameter of the outlet must be slightly bigger than the rotor diameter ensuring an optimum distribution of the wind at the contact surface of the rotor blades including the tips
For a better fit of the cone into the boards it is helpful to sand the edges of the circles at the appropriate angle.

The next step is slotting the boards onto the boards and gluing it. If the outlet seems to be too small, it will be easiest to trim the nozzle at this point.  
<p>Great. what is the motor type that you guys used ?</p><p>Thanks.</p>
<p>It appears from the wind tunnel pictures that you tested the turbine with and without the nozzle. Please share what effect the nozzle had on the power output.</p>
I really love the Wasp Wind generator. However i wish that the details of how much power it can produce was included here. How much volts,watts, amps;etc. At what rate will it charge a battery ? I know RV batteries are supposed to be charged at a certain rate to make them last a very long time.I'm not an expert in wind generators or electricity so for the unknowledgeable like me it could be useful.
<p> it says it generate 23 watts.</p>
I will start to do it.Thank.
pretty cool but u could make it easier
This is a brilliant design guys, did the nozzle give you any bother? 10/10!!!!!!!!
we know it's you erin!! nope, the nozzle was a piece of cake no trouble at all :)
Defiantly add to my favorites!
Awesome result!

About This Instructable



Bio: PDE Year 2 at Glasgow University/Glasgow School of Art
More by PDEwasps:How to build a 'wasp' wind turbine 
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