brandnewb
Going for serious. starting as newb
But not even 2 watts is a let down. surely we should ask isaac newton to look at our math should we? 
Cheap chinese horizontal wind turbine, an in depth exploration.
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Your definition of "blur" is not exactly an accurate measurement. The wind speed and the RPM the motor turns is everything here.
But not even 2 watts is a let down. surely we should ask isaac newton to look at our math should we?
Let me state again, to properly measure how much wattage it can produce requires proper test equipment. You have none of that, so the best we can tell you is that it makes "something". That is what the heater, and the light bulb test tells you.
Hedges
I See Electromagnetic Fields!
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lol, and you tell me after the fact or you did before and I only realize it now
For some real fun, try measuring "Grid Impedance". Yes, that is a thing. No, it isn't done quite the way you might be thinking.
Same goes for internal resistance of a lithium battery.
brandnewb
Going for serious. starting as newb
Yes, something like this is what I inspire. especially if he made it through the Texas blackout of 2020 as he is from Texas I think I gathered from that video
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I personally don't inspire to lay in bed and listen to the out of phase rumbling sound as all those wind generators vibrate the roof. Or the massive raspberry sound as they overspeed in high wind.
That guy has a 22kw solar array. That is what helped him. Not the turbines that are designed so well, they don't turns to face the wind, but just spin in random directions. They do see to be doing a good job keeping the birds off the roof.
brandnewb
Going for serious. starting as newb
for all the ones nearby enough of me please see
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[SOLVED]Looking for a Netherlands based electrician that can go slow
My current breaker panel is in disarray. https://diysolarforum.com/threads/cheap-chinese-wind-turbine-an-in-depth-exploration.30146/post-364197 It is the result of hastily adding new components over time during house construction without reevaluating the layout before each new addition. So...
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brandnewb
Going for serious. starting as newb
for real, So I was thinking about some kind of gear mechanism in where when there is no wind it is in 1st and when the wind starts getting stronger and stronger it will shift gears as to avoid the blades going to fast while increasing the power generation. I can imagine though that in that case sooner or later the blades will snap as they are cheap chine mass produced sub optimal produce
brandnewb
Going for serious. starting as newb
Lawn darts!! the best way to describe the risks I have seen as of yet.
brandnewb
Going for serious. starting as newb
I am such a d@#k head
I am disappointed with my self for not beginning to learn about these topics much earlier. I am doing now though so I can pass on that knowledge to my offspring.
brandnewb
Going for serious. starting as newb
agreed.
Yes sir, understood. I am going all in now. Please advice what tools I need and i will make it so.
Hedges
I See Electromagnetic Fields!
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I am such a d@#k head
Be careful of Darwin! Make sure you get the opportunity!
Although, that is what I do for very low resistance. Just not using the "ohms" scale.
I would measure voltage across a battery cable from terminal to terminal, and either read current on the inverter or measure it with a clamp meter.
I also did it with a bench supply to measure resistance of fuses. I don't happen to have a micro-ohmmeter. My programmable supply could source a few amps and read voltage with sufficient resolution.
brandnewb
Going for serious. starting as newb
Do i need and should get one at the earliest?
Also I am ready to cut up some wires of some regular single phase house hold appliances like toaster and what not.
But let me see if I can get that car light today @Porch is referring to.
But why 12v? why not bigger? perhaps they are not produced?
brandnewb
Going for serious. starting as newb
I'll try and put nuance to that.
I used to hate it when there were heavy winds. Since my building is steel frame you can actually feel the vibrations when the wind is strong enough.
But as soon as one starts with wind turbines all of a sudden one is happy when it is windy.
Same goes for rain. I am still flowing it away from my land/house into the lake as that is what our municipality/ local code wanted at the time of getting a building permit.
So when it rained I felt deprived of sunny weather.
Now I am in the process of collecting all that rain water and for me at least I can be happy when it rains now. Let it rain
I am not sure how to describe it but I think this might be called a self interest bias to how we see the world and evaluate direct influences.
Well if that is true then here is a possible solution for many of the personal mental down feelings one might have
brandnewb
Going for serious. starting as newb
No joy regarding a 12 v car light and 3 wire fitting. Nobody local has it and/or is not open now so it will be days before I can finally proceed
F&*k I am sad at the moment I will pour me another beer or 2 and forget about my sorrows
F&*k I am sad at the moment
I will pour me another beer or 2 and forget about my sorrows
brandnewb
Going for serious. starting as newb
Smokin
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Here is some cool reading. https://otherpower.com/otherpower_wind_tips.html
boondox
Chief Engineer, RedNeckTech Industries
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Otherpower is the place for all things wind. @brandnewb m you might consider joining over there.
Any king of incandescent lamp will work as a dummy load. Headlight, tail light, whatever. Just have to look at its intended voltage and current draw and figure out how many to use and in what configuration. Even getting 20 watts worth of dummy load together would help figure out what power it is putting out.
Which isn't going to be much. I built several larger windmills and even mounted them on a 50 foot guyed pole. They were super fun to build and I enjoyed watching them spin. But they never added any significant power to my off grid home. As long as you think of it as lawn art you won't be disappointed.
The thing with wind is it needs to have a large enough swept area to make any reasonable amount of power. It also needs clean air. Too close to the ground and it will hunt and spin around causing mechanical stress and generating very little power.
Hedges
I See Electromagnetic Fields!
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No - micro-ohmmeter would be to measure values like 0.000001 to 0.001 ohm, for instance a fuse, piece of wire, bolted connection.
That isn't interesting for what you're doing. It could be for battery busbars, crimp terminals, fuses
Testing automotive fuses
After watching a video (sorry can’t find it now) showing resistance testing of cheap fuses and name-brand ones, I decided I’d better test the ones I’ve put in our cars. In the video, it was said that previously Harbor Freight sold fuses, but later recalled them and didn’t carry anymore. Fuses...
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shall I just sacrifce any and old single phase house hold appliance? A tv, Heardrier like you suggested. My laptop even perhaps?
A lower voltage bulb like 12V will be a bigger load.
A 220V 100W bulb would draw 100W/220V = 0.45A
220V/0.45A = 484 ohms.
If turbine produces 5V, 5^2/484 = 0.05W
If 50V, 50^2/484 = 5.2W
A 12V 5W bulb draws 5W/12V = 0.42A
12V/0.42A = 29 ohms
If turbine produces 5V, 5^2/48429 = 0.87W
If 50V, 50^2/484 = 87W
Both bulbs are useful for testing, because the 220V bulb will let turbine spin faster for a given wattage.
If you had a variable resistance and could gradually load down the turbine, power output would go from zero at no-load, to a peak at some RPM, back down to zero output when stopped.
Resistive heating appliances are useful (but maybe too much load, unless just a coffee cup warmer).
Light bulbs work, but because their filament is a material that changes resistance a considerable amount with heat, not as convenient (need to measure current to know how much power produced).
Motors and switching power supplies don't have suitable characteristics. When a heating device also has a motor, best to disconnect that.
Rather than cutting cord off an appliance, if you can get an electrical outlet or cut plug off an extension cord or power strip, then you can just plug in the appliance.
In the second picture with electric heaters, I have a power strip the plug had been cut off wired into a switch (box). That let me plug in the heaters. Each one had two elements and I selected which would total the desired resistance and load to get PV panel around Vmp, Imp.
Measuring PV panel performance
I suppose I could buy a solar panel tester like Will reviewed, but that doesn't feel DIY enough to me. Besides, I'm a cheapskate, and I try to do things in the most difficult (and expensive if the equipment wasn't on hand) way. I'm presently working on an underperforming string of Sharp 165W...
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Do you have a string of Christmas lights? Typically two kinds. One uses bulbs same voltage as your house wiring (220V), all in parallel. The other, bulbs in the 1V to 6V range, all in series (if one bulb burned out or unplugged, none light). You could cut and rewire such a string in series/parallel combination to get any resistance desired.
It just needs a way to regulate the generator itself. Exactly how a car alternator does it. Or adjusting the pitch of the blades. It's just added parts and cost and these little units are designed to be cheap.
In terms of noise, one of my generators was on a 60 foot crank up tower. The tower was next to a barn, so I braced the tower to the top of the barn for extra support. It was not loud, but you can hear the generator hum in the entire building. It was fine for a barn, but would drive me nuts if it was on my house.
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