quasi wrote:
GD ~ Some of your assumptions are a little dated.
1. The turbine mounts 4-8 feet above the roof, in my case that would be 17-21 feet high.
2. Modern windchargers have inverter technology so the start producing power at any revolution speed.
3. These are considered trickle type chargers which run 24-7 and make up for lower charge energy with extended charging time.
I agree that the forest would be a deal breaker. I'm thinking of adding a windcharger to augment my genset so that I can eliminate or reduce the total runtime on the generator.
I'll be adding solar as well since I think it's the best bang for the buck but at $400, I may add the windmill cause I'm a gadget freak . . .
Jim
My "assumptions" are spot on.
If you take a real hard look at the SPECIFICATIONS that your link mentions the wind speed RANGE IS 8-30 MPH.
The reason for the 8 MPH min is there IS NO REAL POWER to be harvested at 7 MPH or less. That IS A WELL KNOWN FACT of wind power.
Just because the rotor might spin, it DOES NOT MEAN IT IS GENERATING POWER.
That wind gen also has very small rotor diamater, it is a WELL KNOWN FACT that if you want to extract energy from the wind BIGGER ROTOR DIAMETER will extract more energy than a smaller rotor.
A small diameter rotor as in the link you gave would STALL easily at 8 MPH if you attempt to extract 400W from it..
That website you linked is stretching the truth in order to get gullible folks to bite.. There are a lot of folks cashing in on these schemes..
Getting any more than a few milliamps out of the wind turbine at 8 MPH is basically what is know as OVER UNITY, it breaks a lot of rules of physics and therefore not true.. Buyer "Be Aware".
It is a WELL KNOWN FACT that in order to be able to get a wind turbine to track the wind IT MUST BE ABOVE ANY AND ALL OBSTRUCTIONS. IT WILL NOT WORK BELOW TREE LINE.
I KNOW that as a fact, I have a anemometer at my home, I have trees located 60ft away from my house which are well over 75ft tall. The anemometer is mounted 25 ft above the garage roof. The trees can and do often sway very hard and the anemometer may only be registering a measly 4-5 MPH.
The wind direction indicator also gets very confused on top of that.
It is due to turbulence from the nearby trees..
I bought the anemometer so I could get an idea if wind power might work for my location.. From what I have gathered over the last four years I would be wasting time and money on windpower..
Before you waste your money on that wind turbine I would recommend you take some time and check out the following website.
FIELDLINESThe folks there are AVID RE folks with a lot of knowledge on the subject of wind and solar power..
