Building a 1kW Wind Turbine For Under £100 Part 4 - Finishing The Body
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- Опубліковано 4 лис 2020
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Don't forget that you can buy materials for your own experiments including our conductive inks at secure.workingink.co.uk/worki... - Наука та технологія
8:20 you start to see a very useful way to balance the system. The free rotation going back & forth shows your heavy spot. Add a few small .5 or whatever gram weights that you find on motorcycle wheels near the top of the settled state & you're ready.
I wouldn't balance it now, wait until the coils are in, then balance. Weights, like you suggested would be where I started.
@@dundeemt On this design the coils are stationary, anything that moves is already installed (presuming he is done with the rotor) so now is actually the perfect time for weight balancing.
I was looking at it spin and thinking the same but I’m a bit late to the party
Robert Murray-Smith: Qualification: Masters Degree in "Applied Suck it and See".
Well done mate.
lol - only real way tolerant mate lol
Absolutely love this concept: high output, low profile, low cost wind turbine. Thanks for the insights, inspiration. Just a thought about mounting - need it secured to a rotating turntable along with some type of wind vane that would automatically orient the turbine with wind direction.
This is a great contribution to the people of the world, thank you Robert
Robert, I've been watching these since they showed up. Pretty easy build as you say. I now know what to do with all the ceramic mags :-) Looking forward to the coils!
I am really really enjoying this series Robert! It is vintage Dread Mad Scientist Robert. And I can’t help commenting after your insights at about 2:30 in. Like most of my comments this is a little far a field. If you read on, consider yourself warned.
Similar to how the wind generator’s marketeer’s “theoretical” will vary greatly with the user’s “reality” the same happens between the marketeers promises and users experience of tankless “on-demand” hot water heaters.
A new Rinnai claims to produce 10 gallons-a-minute (38 liters). But here are the conditions:
1. The incoming water temperature must be 57 degrees F (14 C). This occurs in the United States at about the latitude at the top of Tennessee (and likely nowhere in Great Britain). (That’s the average, so a few degrees warmer in the summer and several degrees colder in winter.)
2. More important though is the temperature difference between incoming and outlet at the faucet or shower or dishwasher. If you have 57 degree F incoming water and you want 115 (46 C) degree water at your shower (absolute minimum I would say) in the morning, your flow rate is now at 6 gallons a minute (22 l). That’s not awful because the average shower head in the United States uses a bit more than 2 gallons a minute (7.5-ish l).
In Seattle, Washington, where I live, in January the incoming city water supply is around 45-50 degrees F (7.2-10 F) and my minimum temperature for a shower is 120 F (49 C). Now the flow rate is 5 gallons a minute.
3. Those numbers are for a top of the line, state of the art Rinnai RU199in, $1666 on Amazon and you will pay that much at least for installation.
4. Finally, unless your natural gas line and meter was installed with a tankless water heater in mind you will likely need a bigger line from the city main and a bigger meter.
The sales person won’t inform the buyer of the real world numbers. The salesperson likely only knows the ideal theoretical numbers. And for sure NO ONE at Amazon will know any of them.
This is why, you see so many disgruntled angry reviews for tankless hot water heaters EVERYWHERE. The customer over expected the flow rate. The customer under estimated the temperature differential (or more likely didn’t even know). The tankless unit itself is under fueled so the flame drops out then restarts then drops out. And what do you suppose is happening at the shower?
This is not meant as a rant. My tankless runs flawlessly, producing 135 degree water in the winter sufficient to have a shower, the dishwasher and the washing machine all going at the same time.
My point is, whatever the wind generator salesperson promises, divide by two (to allow for the marketeers lies, misinformation, and ignorance), then reduce your expectations by 10% (to be safe 20% is better). Then look for the wind generator that will serve your needs.
Or better yet, follow along with The Dread Mad Scientist Robert and make your own suited to your needs.
Thank you again Robert for sharing your joy and your brain. Your YTs always delight and never fail to inspire.
You done a great job at explaining everything so far really like the build. I am going to copy yours but use a pmg as the power source. This is the closest to the old military style vawt's that worked so well in low winds. I have searched for a surplus one for years at military auctions but haven't been able to find one yet.
Thank you for all the great videos. Really enjoy your enthusiasm and the time you take to share your projects with us.
Thank you very much!
My favourite project on your channel. THANKS! Testing and power output, can't wait. Just brilliant! Thank you!
Enjoying the series. Yes once you have finished please try running it underwater with air bubbles from a compressor running it. How cool would that be! Thanks for doing this project.
Who needs plans when it is this simple.
That's what I was wondering?
I know - odd lol
lol - that is a good one lol
You would be suprised to know that there are more people that would need plans than not . Its actually a confidence issue ! They just have not had those practical experiences in their life to build up their ideas of what they can do and thats why highly details plans are a multi million dollars business online but also the liabilities for those plans being a multi million dollar income for greedy lawyers too ! Sometimes just best to not expose yourself legally when the neighbours cat runs out of its 9 lives and gets blood and fur all over your new wind generator !
@@Buzzhumma yes, true, but for those people who need plans due to inexperience, get some real experience by trying it without plans. I mean he just basically showed us the plans in video format..
Great to watch you having so much fun and to see your level of creativity, thanks. With very little money you could add more magnets on the top fan element (wheel) with four or six coils and double your output with very little addition investment. Thanks Rob for all the fun you provide to us.
It may be possible since there is such low cogging. I was kinda thinking the same thing.
Rotate the top coil set so that the cogging from the top set is in between the cogging on the bottom set.
absolutely mate
Rob, really enjoying this series, cant wait to see the results of the finished product. I would love to see you get a KW.
that would be awesome indeed
I'm stupid, but is it 1kw/Hr you are aiming for ? My solar panals are rated at 4kw/Hr I think, in full sun. Please feel free to correct me !
@@IslaSprollie cost more than 48 quid and don't work at night ! 😉
@@IslaSprollie yess theoretical power but as rob has said most comercially available only put out less 200 watts per hour as the wind just does blow hard enough for long enough. I think Robs will generate 500. -700 watts from where he lives . If you are on the sea front you can do well as that wind is unbuffered ! Also that wattage can be devided over 24 hours or by usable hours when its windy . So definition has to made as it can be rated as peak power .
I have watched up to now,and even as a novice,I understand all your points.thanks for the inspiration.🤗
Absolutely love it, a great man once said " If you can`t explain simply, you don`t understand it well enough ". Great talk, great project, well explained.
I really agree with hat comment. mate
Absolutely fabulous this series ! I am trying to build something similar and i find a lot of inspiration in these videos. A real cliffhanger now, watching to see how much it will generate !
I really like the elastic flaps thing you did - I thought it was inspired tbh
Hey Robert, Great job demonstrating shoestring eyeball engineering, definitely a learning experience. Shine on
Nicely balanced, i'll have to watch the first 3 parts!
Those vertical supports can be modified to become "stators"- static reverse blades which guide and direct the wind onto the rotors.
At the moment the orientations fight each other and probably create a lot of turbulence.
Awsome job Robert, I enjoy seeing how your ideas flourish video by video, I think you spread the objective of your videos very well. There are always people who demand many things, but the content you give in my opinion is very valuable. Thanks, don't stop doing them. Greetings.
thank you m ate and thank you for taking the time to say so
Can't wait to see the final results! It looks awesome .. the style and design is quite simply beautiful .. and inexpensive to build. Impressive!!!
Thank you! Cheers!
Brilliant, as always, sir. Looking forward to the testing, at this price, I could keep adding more as parts become available and up with a setup to power the whole house. Thank you, brother.
for sure mate - cheers
I'm fairly certain that you are one of a kind my friend! Totally awesome build! I'm really enjoying this build, so: Thanks!
lol - nah mate there are thousands like me al toiling away in the shed - I just do the same but on youtube lol
Bangup Job and looks like a Commercially constructed Turbine! One comment on the orientation is that are turned on its side you are then faced with building a method of turning it to match the wind direction. So to keep it vertical, you do not need to be concerned with the Turbine direction as it catches the wind in all directions!!! Looks Amazing Robert!!! Plus you can increase output with more Coils as I suggested a while back! Bravo! Here I go! #5 ✌🧑🤚
A great english video with METRIC speaking! Lovely!
Thank You for job!
One of the BEST top 5 leaning channels on this venue!
Now I've got to go, and put some great "try outs" to good use! LOL!
Think I'll start with the active carbon felt wick candle heaters first, as a "warm up," and than... work my way up to these generators!
THANKS!
That thing is turning out Awsome...super nice job. Thanks.
It’s very exciting isn’t it. I can’t wait to see the end results and performance. Great stuff.
Great work. No plans really needed here. The important thing is free movement on the bearings. Looking forward to tests. Thanks for sharing.
spot on mate
Great build, think it's my favourite so far this year. Can't wait to see how much it generates!
awesome mate - cheers
Fantastic series Robert! Love the challenge and general idea, excited for the next one
Awesome, thank you!
You’re absolutely brilliant!!!
This turbine is more efficient in the vertical mode as the wind can come from any direction.
In the horizontal position the turbine will only receive wind in two fixed directions.
Superb! Cant wait to see it in place and generating. Best project so far in my opinion. Keep up the good work.
Thanks a ton!
I love your projects.
😅
I always end up with a new project on my going to do next list!
I think im scheduled out for the next decade between my own nutty mind and your projects!
That is fantastic, I am very happy I found your series. Looks really professional great work Sir. Have a wonderful day.
thank you mate and cheers
I enjoy your videos!!😊 thank you. You give a lot of helpful and very useful information and guidance 🙏 very much appreciated
You double the output by placing another set of transformers and magnets on the top disc as well as on the bottom. Practically it should be mounted with the turbine spinning vertically if you have multiple wind directions throughout the year. It could be mounted effectively horizontally if the wind blows from the same direction all year round. Great Job
I built something like this on a smaller scale about twenty years ago. I'll be interested to see your approach with the stator. Lots of home-brew wind turbine info suggests winding multiple coils and overlaying them. I found this messy and complicated. I finished up laying two rows of pins around the perimeter which were spaced at the same pitch as the magnets and then ran a continuous conductor out towards the edge and then back towards the middle on the next pair of pins and continued around the stator several times. I stuck it all down with epoxy and then removed the pins. (This would be a lot easier to explain with a diagram) That provided one phase and worked really well. It might be more challenging to attempt this with the gauge of wire that you'll be using. I did begin a three phase version where I had the same configuration repeated three times at 1/3 the pitch of the magnets, but then I got a proper job and the project ran out of steam. I've still got a few bits laying around.
Looking great. I could see this with angled scoops at the top to deflect more wind into the turbine. A large enough design could double as a sheltered area and a rain collector. These could be made into smoking areas, possibly a bus shelter. The water and electricity mix could even produce hydrogen. If the roof had solar panels too, and all linked up to one of you battery banks for cloudy winless days. Love this project!!
cheers mate
Beautiful! Thank you!
Simple yet efficient
Thank you for another great one
Glad you liked it!
Another great video Rob. Really looking forward to seeing some readings once you get it up on the roof!
cheers mate
Loving the series and it's good to see theory put into practice. I'm confused on the purpose of the baffles or why the blades are straight and not twisted like a propeller. I'm certain there will be good explanations for both and would like to hear from other people on this.
I think the baffles direct the wind into the turbine. The blades are not twisted like a propeller as this is a low torque design. A propeller is designed to attach to a central small wheel plate but create high torque. Also there would be no more than four propellers. and balancing is more and an issue.
Awesome Sir Robert! That's a beautiful piece you have built. As others have mentioned the unbalanced rotation may need a quick fix but I think you have built something with lots of potential for increases in flexibility. You can add to, or change this or that. Lots of versatility. Well done sir!
yeah potting the magnets has made it a little unbalanced - I need to balance it
Rob you are just a genius! Congrats !
bless your heart mate and cheers
Great build. A beauty and well balanced. It is rotating so nicely and smooth that it promises a great speed even with several coils installed and thus resulting cogging in action. I am curious if you are planning to test a N-N magnet configuration after that N-S you did here...
Bifilar coils can be tuned to prevent cogging. The tuning will be easier to figure out once you know the resistance and inductance, then pick the right size variable capacitor to tune it. The back emf can be used as a boost instead of causing the cogging action
This looks brilliant. I would like to purchase a unit like this from you. I am moving to mountain property which has high winds most days. We are using solar but not all days are sunny. Most days are windy, especially near the top. I cant wait to see it finished and tested as the comercial variations are expensive and do not have very promissing reviews. Thank you for making these videos as it gives me and my family hope of obtaining wind power on our mountain.
Hi Rob. Pretty impressive. And the build standard looks really good. One thing, though :- the baffle plates are normally oriented so as to direct the airstream into the rotor on the downwind (drive) side and away from the rotor on the upwind (drag) side so as to minimise the adverse drag. The way you have them oriented on the upwind side will actually increase the adverse drag. I hope you don't think I'm nitpicking, I'm just trying to be helpful. I'm sure it;s going to work well.
those plates aren't really there for wind flow direction mate - they might have some effect but really they are there just to stiffen the box
@@ThinkingandTinkering Okay
Rob, someone may have already suggested this but it looks ideally designed to fix onto a car roof-rack for testing? Then you might be able to use a still air day, drive at known steady speeds and produce repeatable results. You can't do that with a big bladed turbine! And the protruding threaded bars are perfect tie-downs. If the police stop you just say you are taking a tie fighter to the film studio!
Great job Sir!
A bit of thinking- in the horizontal position of the assembly you get dry magnets,no moisture accumulation.
In vertical position you get more wind exposure and no need to turn arround to catch wind from different directions but also you need water draining to prevent rust or icing in the bearing area and magnets area.
Just an idea
Hey Rob I wanna say thanks for giving me the confidence too start making my own wind turbine I have short videos of the fan I'm gonna I'm turning a 2hp electric motor that was with it into a generator wish me luck
Hi Rob I part made a similar thing using bike wheels and drainpipes but I didn't think about coils and magnets hence my motor only generated 2 volts so I got fed up and forgot about it but now thanks to u I may revisit this
Haha love your thinking. You would fit in with us if you lived in Australia. Cheers Robbo well done
When you mount this on a flat roof, try extending the baffle plates to the four corners of the roof; ie several feet long. That would substantially increase the volume of air ducted into the wind turbine. That might be worthwhile for most of England where wind speed is usually low. 😀
Good idea, and those baffles could have covers that are open under most conditions, but excess winds would cause them to snap shut. A safeguard against storms.
Awesome video! Thank you.
Enjoying this series. Looking forward to seeing some numbers once you've got it in place!
lol - you know what is going to happen there mate - folks are just going to argue how didn't do the tests right lol
@@ThinkingandTinkering Unfortunately, I think you're right. Unlimited supply of "experts" on the internet 😂
@@dkryptonut lol - isn't there though lol
@@ThinkingandTinkering I'm glad you don't let them get to you, there will always be critics. I've always found your videos very interesting.
@@dkryptonut no mate - they don't get to me - I have found it doesn't really matter what you do, someone somewhere will tell you to do the opposite and still someone else will disagree with that lol - it's just best to go with what you think and try it and see - the rest of it is just talk really
Lovely build.
looking forward to the 5th (and probably final) in the series. :) this has been one of my fave projects of yours.
Awesome! Thank you!
Simply Fantastic so imaginative. I'm inspired.
Wow, thank you mate
*Hi Rob,* thats a thing of beauty. Well done on a great build. Just thinking about your threaded bar, perhaps they could be used also as a way of connecting + _ in the wiring process. The fins are a great addition. Would putting a tabular drum inside the cage improve air flow? Anyway, thanks for your videos and hope youre keeping well, all the best kieron
I like this project, can't wait to see it working.
Fingers crossed!
You make fantastic videos! Another great build. I'm almost moved into my new house so I have lots a room to start building and putting my imagination to the test. You have given a lot of wonderful ideas to inspire! Thank you!
that is awesome mate - one of the main things someone needs is room
you have schort on transformers put 4 off them in place en give them a bridge rectifire to charge a battery
Looking good! Thanks for the upload.
cheers mate and
i love the look lol
Thanks so much for doing this and uploading... can't wait for the next video... keep up the good work!..
cheers mate
What you said about the 1kW commercial turbines producing around 100W is very very true, I have a 300W turbine and in strong gusts it can generate about 4A at 14V *momentarily* .. you would need a storm to reach their rated output power with most wind turbines
By the way, where did you get those magnets from? I can't seem to find a good supplier
I got them from first4magnets mate
It's AWESOME buddy!
In the vertical position its multi-directional, it will run regardless of wind direction... however... in the horizontal position it needs to be steered into the wind to generate ...
😎👍☘🍺
for sure - cheers mate
Put horizontally it would be more of a water turbine than a wind turbine
Good explanation and great video. Thanks for the design details and rationale. Looking forward to the running test. I hope that you return someday to the cuboctahedron rotor -- it would look great and probably work well in that same cubic enclosure.
yeah I did love that design too
Rob. Its looking good. And I have no experience. However I believe the baffle plates at the current angle will reduce wind efficiency. You could rotate the baffle plates anti-clockwise to direct the wind into the blades. But a possible better solution would be to use 1/2" or 3/4" pipe instead of the baffle plates. Looking forward to your results.
maybe mate but they aren't there for wind flow - they stiffen the box
Learnt from Enviro Physics class that power is WindSpeed^3 (cubed), so the max wind speed is very important for selecting a site.
Great to watch it coming alive. £48 spent youll break the bank Robert.
Loving it if I was there id shake your hand fantastic.
It will be interesting the long term use and figures it gives you as like you say these commercial generators give readings of max figures if ever met. But real life use is what keeps the lights on.
You have my respect for all you do thank you my friend. Ron.
lol indeed mate £48 - amazing what one can do if one tries - I do get sick of over inflated claims especially from manufacturers who really should know better - but ah well - you know what will happen the minute I start producing figures - folks will argue with them and tell me how I didn't do the tests right lol
@@ThinkingandTinkering mate you cant please all. But you are giving us all what we want the truth and for me a insight into many subjects I would never grasp otherwise.
You keep enjoying yourself and we will all keep enjoying it with you.
Free power is free energy you have already won your bet. That light panel runs flicker free when your generator runs in low wind. Ill cheer with you, I already am.
All my very best Robert. Ron.
That tripped me out when he put his hand on it because my eyes thought it was 7ft high and 20ft behind him on the floor!
No plans are the biggest reason for why I like this one so much. Those perfectly placed and beautifully balanced bearings made me smile too, (is this what serendipity means ? )
As a resident of Brazil I find this very interesting.
Unfortunately resources here are scarce for the low-dwellers and our government makes it clear that we have to make the most of what we can get for ourselves. Thank you for this elaborative video
you are more than welcome mate - I hope it helps
Very interesting stuff. Can't wait to see it in action. You've got yourself a subscriber.
That's fantastic. It's ganna work well!!!!
I’m thinking this could be a turning point very smart move with the steel 12mm rods and yes use the rest as feet a forklift can get it up on the roof if not it’s a build on the roof doable and does spin really well loving the smart board clean touch can not wait now
cheers mate - it will be easy enough for me to break it down and put it back together on the roof for sure
I am trying very hard NOT to just watch the final video before those that came before! I am binge watching these in 5-2021.
Good series mate given me alot of ideas for the wind turbine I'm 3d printing
awesome mate - you should do a video or two of it -it would be great to see
Very cool Rob. This is shaping up to be a really cool turbine indeed.
I am loving it too mate - and I am glad I took it off the pallet
Certainly haven’t been spending hours reading comments across multiple videos. But my first thought is that if you’re already doing a top plate. It sure would be easy to mount a few more magnets and capacitors up there. Your potential for a given amount of material used would increase.
awesome build brother... looking at the rotor that is unbalanced ,think it would work much better when it is horizontally, that way the balancing wont really matter ... the other thing is that old enemy the back EMF in that pick up coil.. if you can find a nice way of handling that in a positive way.. would love to see your take on that... but love the build.. cant wait to see the finished results... :)
Power from the wind can be calculated using the equation
Power = 0.5 × air density (average 1.3 kg m^-3) × area through which the wind is passing × the speed (m s^-1) of the air ^3
Hope this is somewhat helpful, I think this build is brilliant thanks for sharing.
I think the velocity of the air should be to the power of 3 but yes that is along the right lines
@@IrishSkruffles typo on my part well spotted thanks for pointing this out. Although as we aren't specifying a direction of travel it is speed not velocity although its commonly misused, much in the way we say the weight of something when in fact we mean mass.
very helpful mate - thanks for doing that
@Desmond Bagley quite possibly yes but the area that is swept could be calculated by re arranging the formula to make area the subject, once an average energy output is measured. This would then give you the information you need to calculate power at different wind speeds for this particular device. My gut feeling is that the area of the disc will give a fairly good estimate of power available.
Its also worth baring in mind that this is simply a mathematical model for calculating available energy and therfore will not give an exact measurement of power output as we are making assumptions about the conditions, for example the density of the air, neither does it allow for the efficency of the turbine. What this does is give a good idea of what to expect from the turbine. Only further testing would give an more accurate picture of what it truly is capable of.
That’s really impressive Rob, love it
cheers mate
Thank you very much for your videos. I think the channel is amazing
Thank you very much!
Oh, I eagerly await your next part on this project, and thought this would be the one where we see it spinning nicely on your roof. Oh well just a bit more patience, I’ve watched all your renewable energy projects and think this is by far the best!.
awesome mate - thank you - I am being a bit detailed with this one as I think quite a few folks will want to build something of their own
@@ThinkingandTinkering you've already got me thinking about what I could do with the bicycle wheels left over from my recumbent trike build. 😁
You are saving the world ☺️
not sure about that mate - but cheers
great project so far! Good construction as well.
cheers mate
I live is Scotland and I am think I'll make one of these and put it in my garden. We're I live at the top of a hill the wind is constantly blowing.
I would love to see these beside the highway. Anyone who's ever tried to change a tire on a busy interstate can attest to the strength of the wind, especially from big trucks.
for sure mate - there is a lot of wasted energy right there
Nice, the issue I see you running into is the pressure envelope that will limit the RPM regardless of wind speed with a VAWT, obviously the reason the a HORIZONTAL axis is used is the ability to overspeed. That is why one does not see VAWT in large commercial use often. I personally love the VAWT due to the self stabilization at high speeds. The blowing up thing is not ideal with over speed of HAWT. You will get around 200 watts hopefully ( at full potential and optimal wind, AKA not 1KW ). We shall see. Also, one could simply attach a belt or chain to the outer rim where you placed the magnets, then to a motor and voila, you have an interchangeable gen-set with simple maintenance. Of course, you would also need to strengthen the turbine axle. Anyway, cheers.
nice points mate cheers - of course the idea here is speed at the rim and simple design - but get what you are saying and thanks for the add
That is better than my idea to make a wind generator that uses a vertical wind turbine that has some spring arms to slap some piezo elements to make electricity.
Looking good, and looking forward to your next video.
Awesome, thank you!
Great job I'm thinking of using bicycle wheels for the body of my rota. Same sort of set up though.
Lookin good,can't wait too see it with some coils in an another test of Volt's an amp's
for sure mate
I do so love your perpetual patience when it comes to the lazy shmucks who just complain. Killer build. Can’t wait to see how she blows.
lol - cheers mate - I am looking forward to it too!
In a horizontal shaft orientation the big square side plates will be shielding the wind from those sides.
That's cos the wind blows sideways rather than up and down (unless you duct it)
It is looking very good.
cheers mate