Sounds like what you need is a watt/hour meter, or an Amp/hour meter. Or take frequent amp readings and integrate. Remember that for non constant current a digital meter can get confused and report an incorrect reading - I think that's how a few over-unity myths have started.
Hi DIYman. First step is to check what rpm is needed to get the voltage you want. Say you want to run a 12V system, then it means you need 14V from the alternator. So spin it until it gets 14V, and measure the rpm. How to do this depends on your instruments and ingenuity!
Knowing how to save the Earth, however, is not the same as actually doing it. Although we are gradually beginning to seriously develop alternative energy sources, the reality is that we have a very long way to go. You can choose ...
That is high. I wonder how well it would work in reverse? My guess it would offer a lot of resistance, and there may be a lot of static friction - i.e. it would need a lot of torque to start it spinning. A worm gear will not work in reverse at all!
What voltage do you intend to get from the generator? How far apart will the magnets be? You are using very small magnets and very few coil winds, which means you will need to get a high RPM to get a reasonable voltage.Normally that means shorter blades, ...
Thanks windgat for the codes to find blade profile calculation. I was so confused at this topic and had no idea how I can calculate this one. I tried to search in many websites but nothing was enough satisfactory. Your help was indeed very helpful and in the right time too. ___________________________________ ...
Its worth checking the voltage - you never know! It depends a lot on how charged the battery was st the start of its 'long sleep'. You may find one (or more) cells is delivering 0V - that would means recovery is unlikely. I haven't tried a desulphator myself. ...
My estimation of how hot the elements would get and how much current the whole arrangement would take. I thought 1.3 amp through 23 ohm resistance W = I squared R or 38.87 W per element and when you use it to boil water you use 2000W ...
Great question(s)! I don't know how hot the stator gets - I have never monitored it. Of course, there is a neat factor in that the hotter the stator gets, the harder the wind must be blowing, which means the stator is naturally cooled if ...
How Solar panel is Successful in future I mean what is the scope of Solar panel ....May i installed it for home or not ??? Thansk in advance for suggestion .
... is this. Has anyone use capacitors in this way and got results, if so please could you post the schematic of the size of capacitors used and how they were wired. Also would like to know if I should turn the turbine in a down wind type, with out the furling tail.
Great question(s)! I don't know how hot the stator gets - I have never monitored it. Of course, there is a neat factor in that the hotter the stator gets, the harder the wind must be blowing, which means the stator is naturally cooled if ...
Hi All, How hot does a stator get? Can it be water cooled? My idea is to cast some channels in/around the coils and pump cold water through the stator, would this work, and if so wouldn't it improve the efficiency of the generator. ...
Hi Innovo. I wrote the PHP code for that page, and it is based on some fairly complex aerodynamic formulas... I still have quite figured out how to apply the Reynold's number... Sure I could try and do something for water, but I guess the base formulas are completely different, due to the fact ...
... efficient combination to use for generating electricity. Finally a comment about speed and power - they are not the same thing. So what matters is how hard the system can overcome resistance from the generator, not just how fast it can spin when there is no power being drawn from it. Hope some ...
... Test 2: 6.1 - 42.6 Test 3: 3.6 - 33.6 Test 4: 5 - 30.8 Test 5: 3.6 - 26.4 Test 6: Test 7: Test 8: Do these values hold much water and if so how much. Please help if you can. Regards. OooWeh.
Knowing how to save the Earth, however, is not the same as actually doing it. Although we are gradually beginning to seriously develop alternative energy sources, the reality is that we have a very long way to go. You can choose ...
Yes - large surface area, therefore high torque slow speed. Also note how the blades are broader nearer the tip, the opposite to the usual aerodynamic design.
... radio mast is 9m, so perhaps best to stick to that, including the blade height. That makes for quite a tall pole - I would be interested to see how you intend to erect it, and what stays you plan on using. The force in a high wind can be very surprising - you need to make it strong!
Hi there - sorry to post a possibly unrelated question! I am working with a new renewable energy magazine titled RenewerG and we would like to get in touch about a possible article/interview? Please feel free to delete this post afterwards :oops: I can be reached at catr at renewerg dot co dot za. T...
The rotor set is 2 large disks and 2 small disks. The holes are laser cut, and since this is not 100% accurate and can leave a small burr, they need to be drilled out to the correct size. The small disks are the same. ⋅ The 4 holes are designed to be used with 12mm bolts, and so should be ...