Glenn Hough: I wonder how much this thing cost? do you use a motor in this wind turbine? how much power thus this thing generate?
itsandbits1: just curious what the mount angle ; degree off 90 the wings are attached to the arms at? and are you going after lift inside or outside the wings? How is the unit doing?
gizmoguyar: All lift type VAWTs require motor starting. They're much more efficient than other types of turbines, but they require wing speeds greater than the wind, and thus can't self start.
gizmoguyar: It's not really about "Push", it's more about lift. Long thin blades are very efficient. Think about how the wings on sailplanes are shaped. In fact, this turbine has five blades. There's probably some reason for designing it with five blades, but usually the fewer the blades the more efficient.
jlasud: I'm no expert,but that there isn't much surface that the wind can push,compared to the size of this turbine.
paverop: If you have to start it with an electric motor, it's not a very good design.
Maxsell96: Why you untwist the wind turbine by means of the electro engine?
00venc: Some VAWTs need to be started whit an electic motor, they could not start on their own.
The End Time News News: What is the cost
Frederik Staes: oh man this is great!
Allan Rumney: Gen is simply a srandard squirell-cage (induction motor) Wings are intellectual property, sorry. Wind was very light on this test day, about 10 knots.
Allan Rumney: Sorry, cant paste the link, search for Dew Catcher 1
Go to pachube.com/feeds/40318
Here you can view real live data off the Dew Catcher turbine
Allan Rumney: Regarding the question on windspeed during filming, it was barely 4.2M/sec (13kmph or 8mph). This is not our best site, have a look at:
The DUC machine produces good power, to date it has peaked at it's specified 10KW. During the week of COP17, it produced close to 1MWH of clean energy!
Allan Rumney: Hi guys, thanks for your interest. This was our first 10kw installation, and in fact proved to be not so great, with predominently lightish winds. The generation unit is simply a grid-tied, geared-up induction motor, synchronous speed (1500 motor rpm= 54 rpm on the rotor shaft). It's simple, increase the rpm of the rotor above syncronous speed and the motor acts as a generator. Below synch. speed, the unit is disconnected from mains.
Wings are intellectual property, sorry.
itsandbits1: looks lik a high speed unit. Do you know anything about the wings or gen?
andyflowerss: Excellent! What speed of wind was during the filming of this video?