Real World Results From The $50 Water Turbine
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- เผยแพร่เมื่อ 17 พ.ค. 2024
- This open source turbine can be built for about half the cost of a 120 watt solar panel, and will produce about ten times the power per day. It can be plugged into any appropriate waterway without the need for earthworks, and uses only standard off the shelf and recycled materials, and basic hand tools.
00:00 Day One: Starting the Siphon
02:50 Day Two: Plenty of Water
05:25 Day Three: In Which it Works
11:50 Power Output Results
12:15 Summing Up and Next Steps
Full step by step build tutorial:
opensourcelowtech.org/water_t...
/ opensourcelowtech
My name is Daniel Connell. I prototype and develop accessible technologies which anyone can make using recycled materials and simple tools.
The aim is for everyone everywhere to be able to build and maintain their own infrastructure; producing their own energy, food, clean water, communications, and anything else they need.
All designs are open source and license free for any purpose, and full construction tutorials and how-tos are available on the opensourcelowtech.org website.
#water #turbine #DIY #hydro #renewable #energy - วิทยาศาสตร์และเทคโนโลยี
Update; the optimisation and finalisation of the turbine design are going to have to wait til the end of the summer while we do some upgrades on the test site, but I'm going to just start in on the build tutorial in the meantime, and probably do a part two with the optimisations. So there's something for people to build who have been waiting a while now..
In the immediate term, here's a basic list of material needed:
docs.google.com/spreadsheets/d/1t3waIfeX9DJHoFF3sw-QL5JTSyStC_JXH09etDdG5oI/edit?usp=sharing
Thanks for sharing this and the information on the website. It is most appreciated.
Very glad my channel is finally fixed so I can post this. Any questions let me know.
I'll be doing a quick how to build when I'm back in Scotland, and a full tutorial after that once it's optimised.
I will soon be going to the Philipines to Build a Little hut in the mountains and this water turbine is just THE solution for free Energy!!
Also almost every other video will be helping a lot!
I will be waiting for the tutorial on how to build exactly.
Thank you very very much for all the effort you‘re putting in!
I think there is a special place in heaven for people like you:)
Keep up the Good work
@@davidseiffert3999 Nice one.
I'm going to take this opportunity to get out ahead of the three most asked questions on this:
1: The turbine isn't better placed at the outlet, it's a momentum turbine, not pressure. It's most efficient above the draft tube.
2: Multiple turbines in the one pipe won't produce more power overall as they'd each steal momentum from each other, while doubling your material costs or more.
3: No you can't run a pump off the turbine and have the water flowing in an infinite loop between two tanks. I get asked this more than anything else.
Oh and bonus question yes the tutorial is in the works and will be available soon. I know I've been saying this a while now but things are steadily moving forward. I'm glad that so many folk are keen.
Any other questions tho please comment them here and I'll make sure to get back to you. Also if you just want to say hi to bump the algorithm, would be much appreciated as this channel is currently about the only thing paying my rent.
Thanks all.
Hi
About the first point. Can we run several dynamos in one pipe? Perhaps the pipe needs to be slightly modified and try to retain the momentum with gravity.
nice to see a video of the turbine again!, looking forward to see what results do you get from adding a prerotating stage, or as you call it verctorizer :P. I believe you should get a chunk more than 5 -10 % as the prerotating stage is what converts the pressure into speed, kind of like the nozzles in a pelton wheel (now that the pelton turbines are so popular between TH-camrs). Keep in mind that with the prerotating stage the turbine will want to rotate quicker
@@javier3218 Hopefully.
Why not try the compressor blades from a scrap large turbo Diesel truck ??
Absolutely love what you are doing, but my two cents are, if this is to run 24/7 ,maintainance free, the turbine setup has to be much more sturdy. Maybe even look into outboard propellers, or even complete lower leg assembly off an old outboard. Just a thought, but again, very helpful video, much appreciated!
I'm writing this comment in order to positively influence the algorithm so that the video creator receives additional video views and consequently money.
Thanks!
Very happy to have some news from u ! cant wait for the info and see output voltage
Love it! Great work and thanks for sharing. Looking forward to the details in the tutorial.
Can’t wait for the tutorial! Love your work 😁🙏
Nice work, I look forward to all your tutorials and updates!
Good on ya! Looking forward to seeing more of your work.
Love your video mate. I’m in Scotland,and have a similar head of water ,and flow rate. Thanks for posting, you are really helping me to leapfrog ahead without having to go through all the painful trial and error which you share so freely. Good luck with your endeavours, you have a great outlook!👌
Glad to hear it.
I am happy to see the second video of this great project & I wish you good luck and more improvements.
Third, but cheers.
Bumping your algorithm, Love your stuff. i hope one day i have an off grid setup and can use all of your handy ideas! really envy the cool projects that you are apart of. imagine if someone funded you somehow
That's awesome! Keen to check out your other projects as well now
Staying tuned for the tutorial
Looking forward to seeing the tutorial 👍
So impressed! Your team is contributing so much to the world...with very little funding and it's inspirational. Thank you
Thanks.
Much appreciated! Keep up the good work man.
Can't wait for the wind turbine data. Great work, btw!
Thankyou for all your work NJ, USA
Very good, interesting channel, bumping your comments up for you buddy, love to see how this progresses
It's nice to see one of your videos about the water turbine again! I was waiting for it for so long! I'm working on a similar project, would be nice to have a chat someday! :)
Sounds good, my email's on the website.
Felicitaciones. Gracias por compartir. Atento al tutorial. Saludos desde Colombia, tengo una granja y me es de mucha utilidad!. Un abrazo
Wonderful video! Thanks for sharing
Did one of these in a local dam spillway using a 16 spoon Pelton wheel and a 1000 watt motor I had shipped in from the states. Dld really well during the winter months combined with a 400 watt wind turbine and 400 Watts of solar also. Haven't had to use the grid for just under a year..
Nice.
Looking forward to the tutorial! My bro lives in Papua New Guinea, and people there could really benefit from something like this, by all acconts!
This rocks. Proof of concept, done. Any other improvements can evolve…
Great work guys 👍
Dude. Thank you so much for sharing. I'm going to build a few of these for orphanages.
Great video, I was thinking about making a set of pools by levels to get the most amount of energy.
This is amazing
Hello sir, i want to understand something here, from the look your turbine fan is so short but provid force thus it mean the water most have force to that will go though that long distance pipe to run the turbine?
Absolutely great low impact
Excelente muchas gracias!!
Wow looks really useful
I like the simple genius of placing all the electronics out of the water...Not much water in the south of Australia here but I know getting 200w of constant power would make the lives of many ppl much easier....
great video loved it.
Hey ! Cool to see you're still at it and progressing nicely, I remember the first video, and was excited to see how this turned out as I live beside a brook, practically no head unless I ran the pipe a couple kilometers to the mountain and that can't happen unfortunately.
I went fully off grid in 2016, only a 235w solar panel and a couple batteries, still, lol. Have another panel on the roof already to hook up but haven't bothered, once you're use to less, you don't need more, I guess :)
Good luck with your project!
I'm thinking of options for flat water, but it's a bit of a famous problem to solve. Is there any point where you have even only like 2m drop over not hugely much horizontal?
@@OpenSourceLowTech no, not even remotely, it's basically flat for a couple klms, and I'm the end of the line, once it passes my house it's around the corner and out to the watershed, then out to the river, flat the whole way. I had considered the piston pump idea, I think it's called, which works ok in flatwater to my limited knowledge
Also, the brook runs barely faster than a lazy river, barely over your foot deep... until it rains. Then it comes ups 6- 10ft and roars like a beast within a 12h + event... thru my house once in 2016, and nearly several times since, so realistically, sadly, thanks to vast swaths of relentless clearcutting upstream, my time here is quickly coming to a close. 💔
I'll still be following along though, as I desperately HOPE to find another spot with running water on site. I'm going to miss it too much to be happy 'landlocked' elsewhere.
That's rough, river doesn't seem a viable energy source, until it demolishes your house..
@@OpenSourceLowTech sad, but true. Cheers
I'm currently in Western Australia, been seeing the damage from the massive flooding out east, three 500 year rain events in a month..
Brutal. And yeah all the worse when it's at least partly due to incompetent land management upstream. Britain's also pretty bad for that.
Excellent
Still working on the Tutorial for this water turbine? Just found this channel & all it's treasures.
Thanks. Yeah I'm just now in the process of finishing off the update to the wind turbine and I'll jump straight in on this soon as that's done.
@@OpenSourceLowTech Cool man, I'll be looking out for that one.
An Archimedes screw tipe propeller in the pipe will be a good choice, less speed but a lot of torque
New subscriber here.. From Philippines
Awesome video ! Just started watching your Chanel. I was curious on how small you could make this ? Could it be made small enough for a camping trip just to provide power for a smart phone or a gps if your by a river or creek.
In principle, yes, it should be fairly arbitrarily scalable.
In practice would come down to materials availability, which would be mostly the alternator / generator.
It's something I've been giving thought.
Well made video 😄
Bump Bump 🙋🏽♂️
wow looks like you opted for making all the beginner mistakes in the book, but as long as you take that as fun and persist you're bound to succeed . there are a lot of critics abound your system I could point to but I truly appreciate the idea of keeping it low cost (even if less efficient), low tech and more importantly open source !
good luck, you're almost there ;-)
I waterwheel work fine. With the flow they had 125 W should not be a problem. :-)
Hi, enjoying your videos and hopefully helping pay the rent. Cheers!
Great vid Daniel, I love this sort of stuff, a what a great water flow u have. I do have a suggestion, and that is too consider an auger tube flight arrangement in single, double & maybe even triple flighting. The benefits With your near vertical drop are: 1) you will have less likelihood of block ups from rocks sticks etc. 2) by varying length, pitch and amount of flights added to the Auger type impeller , you will get different results, ie: speed, torque, etc. you could have an auger from 1 -20 foot long here, couldn’t you? Length gives torque, number of flight per shaft give you speed variations, ie: more flights, the slower the speed & torque probly goes up too, 1 flight will increase speed and reduce drag/friction which is another consideration here of what will work best for your situation and hopes for higher outputs. 3) dont make the auger fight too tight in tube, keep a bit of gap, it will still work fine and will have plenty of torque to help chew up ant bits of sticks n stuff that go through including rocks, to some degree.
A farmer in the grain industry here in Queensland, Australia, once told me he tried to put a 12” petrol auger about 35’ long into a dam once to clean fertiliser out of it, and he said it nearly choked and blew off the end angle for grain to drop into bins/silo’s/ trucks, etc. He said he had to crack the throttle back so quick once it picked up the dam water, before it hit the end, and it pumped a huge volume of water like this. I believe this maybe a better answer here for you, with numerous benefits from this type of turbine arrangement, and while having some sort of bottom bearing support would be nice, I dont think this is completely necessary, but is simple to do anyhow, just a 3 prong/brace arrangement twisted sideways so not to restrict water flow, and support a bearing for centre spigot of Auger flight. Bearing could be a piece of drilled Nylon material.
With what you have done, which looks awesome by the way, I am sure without much more materials and labour costs, you would find you could have a much more reliable and powerful turbine capable of probable so much more power with that sort of water flow.
I am also a big proponent of using large supercapacitors for various output upgrades as another commenter has suggested to use capacitors. There are a number of different ways that capacitors can be used in a solar/ hydro system to obtain great benefits. What u have here is gold, great job guys! I am looking forward to seeing how this all progresses, thanks for sharing this great project info. I would love to have this water capability in my back yard.
I'll be trying several printed impellers, including a couple screw types. Will see how they go.
I think something that long tho you'd lose a lot to friction with the water.
Awesome 👌 what's the motor/ generator?
That's a wheel from a hoverboard / balance board, tho other options are potentially usable such as motorbike alternators.
I have a 10-month creek on my property with a ~16m head on it, and I've been following for ideas of using your concept to provide power for the property. Is there a specific reason you use straight piping? I'm considering using 2.5-4cm flexible agricultural irrigation piping for my run, and running the piping into a barn that is 10m from the creek, about 6m of head below the intake. At a guess, there would be less momentum losses from the flexible piping than from the angled joints?
I'm also intensely interested in non-battery methods of power storage, such as gravity storage. Having a 20m tall barn that is empty most of the time makes that really tempting to figure out.
Maybe this very detailed playlist going through the construction of an entire hydro system from scratch would interest you, th-cam.com/play/PLEZ2hvCDKUpEvvgEy_b5C6UnYNslaYcik.html
You also have similar head available as he does so it's a good indication for how much power you can expect.
Flexi should work ok, but probably more friction and turbulence, tho as you say, should be better on corners.
You'll probably want to use something a lot fatter diameter tho if you want to get any decent flow, even with that head.
Gravity is surprisingly low energy density unfortunately. Like; 1 kWh is 10 tonnes elevated 37m.
It's mostly a matter of friction against the flexi-pipe wall rather than 'bends', especially on relatively long runs compared to the small dia you have in mind. You can get 'long-bends' for drainage pipes, but those are mainly to get cleaning rods around corners rather than fluid flow issues. At a 10m run, with 6m head, anything bigger than 60mm dia shouldn't make too much % difference to flow available. Doubling to 120mm would give 4xflow, and frictional losses per unit of flow would be halved. 30mm pipe would be 1/4 the 60mm flow AND you would start to see significant friction losses.
If you need to get maximum power from each unit of water, for that you need shortest/widest pipe for the available head, an efficient/matched generator, and generate power as close to the source as feasible (run power cables from that to your property/storage-batteries). You'll also gain from the extra head available.
I don't have money to donate for your great cost but I am not skipping any advertisements in your channel hehe
That's plenty, cheers.
We have rare to intermittent creek flow, and need to elevate the draw (via the siphon ) to fill ponds at higher ground ... does this turbine set up raise flowing waters ?
Unfortunately no, the siphon will only flow if the outlet is at a lower point than the inlet.
You'd be better off with something like a ram pump or bunyip pump.
My second question is electricity can also be generated right? If yes then thanks for this 2combination
Отлично сделано, успехов вам
We need the plans brotha, asap lol I'd definitely pay the money for it I've been following your stuff for awhile and I've been wanting those construction plans
I'll be doing a quick build video soon as I'm back in Scotland, full tutorial to follow once it's optimised etc.
I like the easy setup. The siphon solution is easy, it is however bound to be inefficient.
I guess you would see great gains if this systen used the potential head pressure.
@opensourcelowtech Just found your channel and it looks lika a very cool open source project. Compare yourself to the existing products of for example langstonsalternativepower and the youtube channel LandtoHouse which has very in depth videos about a 6inc and 4inc version of a similar flow oriented turbine. The output actually seems to match for the size too.
So it would be great to have that project kicked off a bit more too. I see a bit of a problem in your design compared to theirs, because your generator wheel sits in a bigger pipe than the intake is. Shouldnt this reduce throughput? If compared to their system with the intake until after the generator wheel and then opening up to create suction, I see waay less resistance.
Maybe also make a 15cm version with opening the suction up to 200-250mm and submerging the exaust.
Yep, know those guys, and mine is quite similar in design tho that's coincidental.
Check the build tutorial on my website for more details on the design, but basically there is a throttling of the water over the runner so as to not lose too much velocity and therefore rpms and therefore voltage.
This is in the form of either a Venturi type thing coming in from the Y connector wall to meet the runner if using a 120mm PC fan, or a central flaring if using 3D printed runners.
Looking at your filter, it seems kind of designed to keep the leaves in place in front. Is that by design, or would a cone shaped end allow to get rid of more of the debrie?
A mesh cone is one of the options I'll be trialling.
Seems a tricky problem to solve..
So clever 😃
In addition to getting a turbo impellor off of a diesel truck, you might also be able to use the heavy duty alternator as a generator head
Love the project and work, power generation for $50 is a no brainer, I have an RV on an off grid plot of land and want to keep the batteries charged (without using fossil fuels, what would you hook up to this generator, to turn it into a battery charger ?
It should more or less plug straight in to any charge controller or equivalent which is happy with the max volts and amps. You may need to put it through a three phase bridge rectifier first, depending on whether the box wants AC or DC.
Been saying for years, we need to find a better way to generate hydro electricity, and to be able to do it without having to dam up rivers and waterways.
This is a good start in that direction.
The problem is scale. If they make this thing large enough then all the water would flow through it, and you end up with a natural dam. Small is fine, but bigger is less environmentally friendly.
Unfortunately, bigger also means more power, and it's cheaper to just put a bigger pipe and turbine in than it is to find another location and do an install from scratch. Also, there aren't many (any?) places left where a commercial installation makes sense in the developed world.
i commented on your similar video but ill repast it here ..... just stumbled across this channel and havn't watched more yet ,have you considered using a pulley system in place of the motor to lift weights or even water to a perscribed height as a means of storage of potential power which can be then lowered using pulleys and gravity to power a generator as required , it would mean far less wear and tear on motors and an easier way of power storage than batteries and far more available and reliable in any situation
Awesome 👍
Where do you find some of the components to make this? I need to make one and I'm having trouble
Which are being tricky?
You found the tutorial?
What would you do with a winter where things freeze up? I'm not done watching the video because I have to go to work. I like the set up.
Depends. The water goes through the turbine pretty quick, so don't see as it itself would freeze up in pretty much any conditions, so would come down to all the rest of the waterway..
Wow fantastic! I wonder if a boat propeller could be used with larger pipes (maybe a permanent dam like fixture) and an alternator from the same boat in order to produce a larger power output with more durable parts.
The design should be fairly arbitrarily scalable and yeah a boat prop or similar would probably do a fairly decent job.
Haven't worked with boat alternators, but they seem to resemble car alts, which aren't permanent magnet and so not ideal.
For larger versions something like a treadmill motor might work, they do middling volts per rev but the turbine spins pretty fast.
Would it be possible to use an appropriate sized boat propeller or perhaps a metal disc formed into a propeller?
As long as it's the right size, should be.
Great job !! Later, if we manage to make the design for 3D printing of our current powerspout turbine for 2 measurements, I will send it to you, it can be of great help to improve it for low-resource areas! Currently we achieve about 280w at 1.9m height, but improving the pipes and with a hooverboard generator we hope to reach 350w 24x7 (7-8kwh/day). We are also testing with different sizes of pipes (200-250), shapes at the outlet: cone, conch, etc.
Decent numbers, what kind of rate of flow?
I'm currently in Nepal, working with the university to more comprehensively test the various 3D printed runner and stator options. Will publish the results when I have them.
I think it's A kaplan style mini turbine. But why you not make inline slug.?
How would a series of turbines on the same string work?
I have very little knowledge of this area, but could it be achieved by angling each unit a bit and feed the "exhaust" into the next unit, then the next and so on?
I suppose there's a level of resistance in each rotor and that the water pressure will only drive a certain number of them for x meters of drop, but I'd be interested in knowing. 😊
Each essentially takes momentum and efficiency from the others.
You're generally better off with one unit on as long a pipe as possible.
Managed to source a Bafang ebike motor, would love to repurpose it for a hydro generator, not sure where to start though. Any help most appreciated!
First thing to do would be spin it up with a drill and a multimeter and see what kind of voltage it does per rpm.
Hoverboard wheels do about 55VDC(rectified)/krpm, which is about perfect for my turbine.
@@OpenSourceLowTech I’ll give that a try thanks! Also wondering if I’d have to take it apart to get to the stator etc or would it work as is? (I’m assuming it is a permanent Magnet motor.) look forward to the ‘how to and build’ instructions on the hydro project, really interesting videos so far, thanks!
Shouldn't need taking apart unless you want to rewind the coils for different voltage +/ amps, which is a significant hassle and not usually worth it.
Should be PM, direct drive is generally better than planetary.
@@OpenSourceLowTech sounds great, thanks again 😄
What vertical distance does the pipework cover before it enters the turbine? Looks like you could gain another 2m (20kPa) of pressure at the intake if the turbine would be at the end of the pipes.
Still need to measure it accurately, but it's something like two meters above, same below. It's a momentum turbine tho, not a pressure type like a Turgo or Pelton, so the runner doesn't want to be at the outlet, best configuration is vertically above as long a draft tube as the location allows.
Got it halfway here for topological reasons.
@@OpenSourceLowTech Ah ok. Looking forward to your further work.
Concerning the blade damage i think you said that it occured after you shut down the water flow. Could water hammer be the cause?
It may well have been, yeah. That or just coincidental timing. More testing on the way.
@@The8blackwidow8 would water hammer only occur if you stopped the water flow, instead of cutting off the water flow? (Blocking the pipe end, capping the pipe end suddenly in would be ways to create water hammer.... But removing the source of water at the beginning of the pipe shouldn't cause water hammer)
@@FuAzzi In pipelines water hammer does travel in both directions but starts 180° out of phase on the other end. You basically create a zone of vacuum at the cut and the water column will hit back after two time the travel time through the piepline.
The length of pipe on the "cut" side here is very short, so the water hammer will be very small in amplitude (because you can not cut the flow fast enough to reach two time travel time through the pipe). Propably not a concern but it was the first thing that spiked in my brain when he showed the damage.
May I suggest using the blower head from a leaf blower? All you need is a momentary expansion below the impeller, to let the water flow. It is very durable and should do well in water, as most are made from aluminum and are balanced for very high speed.
That kind of centrifugal impeller is one of the first I tried, but turns out they don't reverse well. A couple of the 3D printed options I'll be trialling next tho do borrow from some of those principles, but (hopefully) more optimised for this kind of use.
@@OpenSourceLowTech check an old jet ski.
I know you answered this multiple times, about 1 motor + multiple blade design.
BUT, maybe it will Slow the blade spin speed down for Durability, and hopefully the extra torque can make up for the difference in power.
This is probably not what you are after, ie simple small design, but for the readers out a large water wheel may be an option for simple Durable applications.
Overshot Waterwheel Design, they are very nugget, no need to worry about debris. more complex / material large wheel design, but low / easy maintenance.
Pitchback Water Wheel has better efficiency, same wheel design but needs a catchment channel bottom area.
Great
Nice build, thanks for sharing! It looks to me like $50 is too little to do a good job. I'd like to see the $500-1000 versions with heavier turbines and a better screen option.
The one in my head would be more like a good pump used as a turbine instead of a fan. It needs to be heavier, also less corners on the pipe, the screen is tricky, perhaps the right pump choice with bigger stronger blades would help to allow more solids through. Then I would also consider a diverter for irrigation once batteries are charged... So much potential. I live in Canada and our hydro potential is through the roof. Unpowered dams with relatively low head but large flow abound near me. I'd like to see us tap into that potential in a good way. Solar is ok here but hydro is king here for a reason. Bountiful base load power
The impeller I'll be improving on with 3D printed options, for those with access to a printer, the screen as well but that's going to be a matter of some kind of cleverness I haven't quite thought of yet...
Please let us know about type of output circuit as well, and what else needs to be attached to get smooth electric power with your turbine. I hope what i have asked make sense.
The hoverboard wheels put out three phase AC, so that'll either go direct into a charge controller if it takes it, or more likely through a bridge rectifier first to convert to DC.
The voltage is super stable, as the water speed is pretty much fixed. It's way easier to work with than a wind turbine, kind of more like solar, but 24/7.
Thank you so much.
Sweet
👍👍👍👍very good 👌🏻👌🏻👌🏻
Have you consider a hilical blade ? (Mabe an Archimidis screw)
I'll be trialling a few.
Can I 3d print you an impeller? I already have one deployed making over 500w in 3m head, but it's a 150mm inlet.
Oh hey. Is that Spencer's one or did you build your own?
The next day of testing in Glasgow, which will hopefully be fairly soon now that I'm back in the country, will mostly be about comparing runner shapes, including 3D printed options.
Full video to follow but email me through the website and I can let you know directly.
If you put another sliver of pipe say two inches long in front of the fan blade next size smaller that protect it against stones and increases of efficiency, also put a cone ideally or you could use a straight piece of pipe blocked off 3 " in the front of the fan the diameter of the Hub and the same on the back end that will increase its efficiency even further giving you're a better Venturi without turbulence
I am intetesting thud project
Need to source some small metal props. Like for small trolling motors or something.
if you're going to impart a spin on the water, then i think there might be a couple ways to get more torque out of the turbine. Shouldn't that allow you to get more power?
Fluid dynamics is essentially voodoo, so the only way to know is try it and see what happens, but I'm hoping at least a little.
@@OpenSourceLowTech There is a huge gap between my knowledge and my ideas, so this it may sound dumb. If you trail some fins from the blade hub up the pipe, you should get a lot more torque. If you have more torque then you can use stronger magnets right? you'd probably have to do a lot of designing in 3d printing to get the ration of the fan blades and the "tentacles" to not create interference for each other. If I had any of the skills or equipment needed to attempt it, I would. I don't know what I don't know, but I think I'm on to something
I tried a stator turbine type approach in Berlin, but it ended up doing about 20% less power than with nothing. I'll be trialling some more exotic 3D printed runner shapes, will see how they do.
As it is I'm fairly happy with the rpms/volts to torque/amps ratio, I'm pretty much just looking to squeeze out any extra efficiency and watts I can get.
How many corners can you make on the line? Without interrupting the flow?
It'll always flow, but yeah more bends means more turbulence and friction, so are best minimised as much as possible. Fluid dynamics is voodoo.
@@OpenSourceLowTech Thanks for the answer.
How many generators do you think i could put on?
For the intake you need a Coanda screen.
Yeah that's currently the main problem to solve. Coandas seem to do a decent job, but I'm wanting something that doesn't require much to any earthworks if possible.
what about using the airflow to turn the turbine, that way you won't have to worry about contamination, you have plenty of drop to create suction
Thks & question;
Inspired by your works I thinks I figured-out the simple means to get significant energy out of a slow moving stream. Really it's occam's razor simple & I test in next month.
Questions: If it works ??How/what do I do to ensure it's free-for-all & greedy trolls won't get control of it & stuff (ex: patent it)??
If you want to keep it open source just publish the design publicly, then it becomes prior art and can't be patented by anyone.
If you want to be more sure look into Creative Commons / Copyleft.
@@OpenSourceLowTech Thks, you're quite good.
you might try a conical design like a lily impeller or one of those football shaped ones, rather than a standard fan blade. I'm not sure on off the self costs, but they're not too hard to make out of various materials, as I understand it. Seems like it would be more durable in this application though. just a thought.
I've got two lilies 3D printed ready to test when I'm back in a couple weeks. Interested to see how they do.
since you got a long outlet, why don't you use a screw type of blade, all the way to the exit, so you can extract more potential force due to the mass of water queuing in the screw blade?
I've 3D printed a couple types of short screw runners, will see how the go. A longer one tho would be fairly involved to fabricate and mount, and would increase friction. Also it would presumably trade off revs for torque, and I'd rather run this higher voltage lower amps.
Don't be surprised if the h2o spins in the opposite direction than expected. I have found that vortexing vains can have a counterintuitive effect . It should spin one way, but it spins the other way instead.
Fluid dynamics is voodoo.
That a clever system. A Bing search for (vortex-grit-removal) looks like something that would cost 2 or 3 feet of head and get rid of all the stones that would outright break your turbine blades and clean up a lot of sand that would wear the blades awfully fast. In the end, making molds from your plastic blades and injecting wax in the mold then making an investment casting the blades out of metal is the only thing that will stand up as a water turbine. I expect if you stay with it very long you will end up using bronze.
A centrifugal filter would likely do a decent job, but I'm still hoping for something a bit easier to build and implement.
Same for the impellers.
I expect a vertical 12 inch round pipe 2 or 3 feet tall with a horizontal inlet tangent to one side at the same level or below the vertical 3 or 4-inch outlet pipe, Tuning the height of the outlet pipe and the diameter of the trap should trade head loss for grit removal. The depth of the trap is a place to collect sans and rocks.
I expect you will find turbines engineered for the water flow you male enough more power you can't afford not to make them.
Kris Harbor in wales is building turbines. You may want collaborate with him!
He doesn’t have the head water you do but your unique ideas may resonate!
Good luck
Yeah I've been watching his videos a while now and was going to visit some mates in Wales this summer, might see if he's available.
His turbine is a Turgo, which is for higher heads than mine (think he's got about 15-16m or similar, mine is meant for 2-5).
But a lot of the principles are similar.
It’s about experimenting. We see thing in our minds eye! If we can find common knowledge we all gain.
Kris is trying his best. You are too! Water is powerful stuff!
Dig deep and explore the possibilities!
At about 13:30 this gentleman throws a twist.
HTTPS://th-cam.com/video/QSnHShly5R0/w-d-xo.html
Try an Archdiocese Screw type.
QUESTION:
In the water stream down the pipe, what is the most important factor when optimising a turbine?
Like what's affecting the turbine the most? the volume of the water, the speed, the direction in which it hits the blades?
Im not an engineer and I assume that these are all important factors, but I would like to know: If you make the water spin down the pipe before it hits the turbine, would this increase or lower the turbine output?
I've seen enough videos to assume that NOT spinning the water before the turbine is the correct approach, but I never got to the reason why.
If someone knows, I would appreciate them sharing it
All those and a couple others. The next step is optimisation, so hopefully by the end of the next video should have some fairly comprehensive answers to these questions.
Suction propeller pump not new.but cooooooll
Pre/y cool
@ 1:20 U DON'T want undulation in your pipework...
The inlet screen need 2 B in non-aerated water with adequate supply;... so when it starts to siphon it pulls clean water & NO leaves;... bubbles...
Indeed.