Back to the Future of Wind Energy Technology with Paul Gipe
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- čas přidán 27. 06. 2024
- I have noticed for a while that the same few "unusual" wind turbine designs seem to crop up over and over again as a "new" wind technology. This video is a critical look at these new wind products with guest Paul Gipe who has been monitoring the wind industry for over 40 years.
I haven't referred to many by name here, but the advice in this video applies to all the ones I get frequently asked about: PowerPod, IceWind, Alpha311, Archimedes Screw, Lantern-type and any ducted, shrouded or vertical axis wind turbines.
Bookmarks:
00:00 Intro
02:20 Paul Gipe's tips to identify a "fantasy wind turbine"
03:29 #1 High hype - experience low
03:45 #2 Aggressive marketing
03:55 #3 Celebrity endorsements
04:01 #4 "not like those other wind turbines"
04:20 #5 New patents
04:39 #6 Drag devices: squirrels in a cage
05:18 #7 Ducted turbines
05:43 #8 No hardware, but a fancy website
06:01 #9 Works in low wind
06:19 #10 Silent
06:44 #11 Does not kill birds
07:19 Small wind turbines have small everything
08:43 History repeats
09:41 A cautionary tale
10:19 Wind turbines in the Eiffel Tower
11:39 Rosie is a party pooper
12:17 Betteridge's law of headlines
Check out Paul Gipe's website: Wind-Works.org
And Wind Energy for the Rest of Us: www.wind-works.org/cms/index.p...
This is the other book I show: Wind Machines by Eldridge 2nd Edition
books.google.com.au/books/abo...
It's out of print, I tracked down a copy on Ebay.
The full paper on bird mortaility is available to download here:
www.annualreviews.org/doi/abs...
You can find independently certified small wind turbines here:
smallwindcertification.org/ce...
www.dnv.com/services/valid-ce... (download the Excel file)
If you would like to help develop the Engineering with Rosie channel, you could consider joining the Patreon community, where there is a chat community about topics covered in the videos and suggestions for future videos and production quality improvements. / engineeringwithrosie
Thanks for watching the video Back to the Future of Wind Energy Technology
#technology #engineering #educational - Věda a technologie
This kind of wind engineering content isn't anywhere else on CZcams, I love it, thanks so much!
Thanks!
@@EngineeringwithRosie Heart attack pictures, fatty foods is animals clogged arteries : czcams.com/video/15wgYsToORM/video.html !!! czcams.com/video/pFPFnhfuLrE/video.html Vegans don’t have this problem because that is the animals. Vegans don’t get clogged arteries, 4% cancer if you’re vegan. Meat based diet 51% death rate. That is extremely high for a frigging burger etc. Gorillas in the wild, have 1 percent cancer. And they never ever eat animals !!! Peer review science !!!!
CZcams delicious vegan food. Time to change ✅❤️😉
@@EngineeringwithRosie thanks ...i can not find the starwind in that book. would you please help me? where I can find estimaiton for star wind?
It took me some time to find this video.
This is the best educational video regarding these turbine scams. I wish this would be shown to everyone who stumbles upon one of these videos with their absurd claims. It definitely helps with getting a sense what and what not to expect from each turbine design.
I've been following wind energy for decades and I have to say that I love your approach and attitude.
Thanks, that's nice of you 😊 I've only been at it for a little over one decade, so I didn't see most of these "inventions" I showed here when they first came out. Which means I can understand when others think any non-horizontal 3-bladed turbine is a revolutionary idea.
@@EngineeringwithRosie I’m glad you got Paul Gipe on. When I started in a small wind business decades ago I read his book. He does a good job of explaining why vertical axis wind turbines do not work very well. After several decades and an incredible amount of marketing hype and out right lies from VAWT manufacturers no one has proven him wrong. The physics just isn’t there.
Thank you very much! Your science-based videos are a great public service!
@@EngineeringwithRosie, one thing I didn't get from the video....was that I already understood that ducted turbines are more expensive to produce...this is obvious. But your video did not address if the additional cost does indeed pay off in the life of the ducted turbine. Very disappointing lack of economic research...and a very engineering type mindset to just write them off without showing the economics fairly (something like total lifecycle costing)
The hivawt has been around that entire 10 years. Surprised you haven't heard of it since i had millions of views for being sent to jail for installing it next to my house. Also I'm the Turbine Guy
Dr. Rosie's channel is the best.. You don't waste time with a ton of emotional claims and are very analytical. This wasn't negative at all, it was factual....I always look forward to what you are going to put out next. Liked and subscribed from America
I have been researching this for a personal off-grid setup for a few years now, and it is daunting. To figure out a battery bank, which types of batteries to use, BMS, inverters, charge controllers, wiring, solar panels, turbines, small scale hydro-electric, even human power... There are many ways to do it, but it is more often than not a DIY venture. I love that aspect for my own curious, problem-solving nature, but for mass adoption it will continue to be a real hurdle for quite some time. I feel like the best option for myself, and most likely everyone else looking to generate their own power, is a combination of some or all of these things. It really comes down to harnessing what is available in your environment. For example, my land is situated at the bottom of a hill where water pools near the peak, so hydro-electric seems feasible with a small dam, a decent length of pipe, and a scaled down version of a typical hydro-electric generator. Also, I am on one of the windiest coasts in the world, so wind power is something I am strongly considering, but to re-purpose vehicle alternators, electric bike motors, or buy an expensive pre-built generator? it is tough to choose. With advances in solar technology, even in my predominantly overcast climate I can still see some decent charging from a 1200-1800W array. There are so many factors to consider, but with enough research you can feel confident in your choices, and ultimately learn the most from the building and using of the system.
The draw back is system cost vs grid tied installation (when its feasible). My one thought for homesteaders is a backup freezer battery bank for out of power emergencies. The cost of a gas generator vs a viable 'offgrid' system drives the generator cost as doable vs a green preferred one. Great points
Awesome vlog on a subject I keep in my little green heart ...
Generally where are you? I do think that wind is more practical vrs solar because stormy times I think are when you need the power. But if you live where you can build as logical I like passive annual heat storage buildings
@Pat James
If the water runs year round then use micro hydro- or pico hydroelectric. If the water runs a hundred meters downhill then you may be able to get a few hundred watts and store it in lithium iron phosphate batteries that last a long time. Will Prowse's channel does a lot of the explaining for you.
@@acmefixer1 I have been learning a lot from Prowse as well. I am currently looking at a 24V series/parralel bank with at least 400Ah capacity. Learning to balance cells, wire components, and source materials has been a journey, but feel it is the right step forward. Power independence is worth the time it takes to learn and implement. Kris Harbour has a cool hydro setup, I was thinking something along those lines.
@@PatJamesRicketts Hello
Water is an attractive source of energy, but in my opinion it is the hardware that requires the most attention in terms of maintenance. I find solar energy much better and if you write with you blowing a lot then even a wind generator is worth considering.
Very well done Video!! I have enjoyed working with Paul Gipe for years and he was as straight forward and honest in this video as when we first met ( I am the one in the red checked shirt on page 423). Keep posting videos that keep people thinking and THANKS for your efforts Rosie !!
Thanks for bringing an intelligent, informed voice to this topic. So much hype and misinformation out there, it's great to have your voice in this field.
I always watch your videos for several reasons but mainly because I am hoping to move house and install a wind turbine and your honest reviews are truly amazing and appreciated. My enthusiasm is on turbo and my motive is to do something good and I thank you for the fantastic information and guidance that you all offer. Thank you 😊
As WTG design engineer from the 1980s I am pleased to see your realistic assessment of new novel WTG designs ....at last! There is nothing new under the sun was a comment from a person who lived around 2500 years ago and it still applies today! The internet is such an attractive place for anyone to present their ideas and so we get the rubbish as well as a few small gems! Working out which ones are gems in the WTG market is a lot easier now you have provided this guidance! Thanks 👏
Thanks for helping us all stay within the bounds of reality. I do love playing with concepts, but delivering proof in the real world is what ultimately matters. That said, I'm horribly disappointed that my backyard full of squirrels is being so cavalierly rejected as the infinite power source I think they could be. 😁
Thanks for the laugh.
Recently discovered your channel, and like it a lot. Episodes like this one are particularly interesting and useful.
Cheers, from a fellow Aussie.
I appreciate that you presented this topic without being condescending. Well done!
Well nice video and I am glad Paul Gipe is still around. Being from central PA I met him back in the 80's and he was down to earth and no BS back then.
I live in a fairly ordinary suburban house in Brisbane, Australia with an electricity bill that was equal to the GDP of a small country. I make no claim that my calculations were correct but solar panels appeared to make more economic sense than any wind turbine that I could legally erect. Large scale wind turbines erected in a far more suitable location are obviously a totally different story.
These new innovative designs are always interesting but it's a huge step between finding something to be interesting and actually spending the $$$s. Thanks for the excellent video (11/10).
Great video Rosie, I remember gleaning over that Taxonomy page as a Mechanical Engineering student in the 90s, and after trying to invent some future windturbine concept from the various known effects, Magnus, Venturi, Coanda, etc, conventional is so boring lol
Thank you for another excellent, informative video. I learned a lot and it has not put me off being interested in small or medium sized or truly effective & efficient designs, but definitely weary of unproven gimmicks.
You're not a "party pooper". This video and a lot more like it are so much needed. More skeptics need to speak up and find the courage to call out unjustified hype with regards to renewable energy sources and renewable energy systems and also talk about what the scientific literature has figured out already.
There are a lot of studies of renewable energy systems and unfortunately not many people seem to read them. In fact most people don't even seem to get the idea to read them. They just seem to forget that this subject has been and is being studied by scientists all over the world and that they are publishing studies about it.
Love your work Rosie, just discovered it and its very useful for my project of creating a portable generator for hiking/outdoors. I find it's really not that complicated, if it spins, it generates electricity. If it spins faster than something else, it generates more.
And I'm planning to do a series of tests next week, testing the best configuration for a number of different blades.
I remember Paul Gipe's name from the 90's when I was interested in windpower. Eventually I bought a small off the shelf HAWT and set it up in the back yard. Didn't produce much power, too many tall trees. I don't regret doing it, but found the city planning department totally unhelpful and condescending. It was a chapter in my life. My logo has the wind turbine in the background.
Yeah, I've been doing this awhile. ;) Glad Rosemary gave me a new outlet.
As an aspiring mechanical engineer, it is nice to see some real facts rather than the usual hype without facts. Thank you!
A great vid Rosie. Thanks to you and Paul (now there's a man who has 'been there, done that')
Nice one Rosie, I used to read the Beyond 2000 books, any new technology needs to be proven before it’s publicly promoted.
Great vid! Nailed inviting Paul Gipe to an interview. But there's an issue... Just because the project is less efficient than an industrial wind turbine, it doesn't mean it's garbage. Just because an hydroelectric power plant is more efficient than a simple water mill, it doesn't mean that they are useless in a little farm scale.
I think you could have talked more about the good projects out there for "backyard purpose".
Exactly, not like all of us can or want to install a costly, huge, noisy, animal killer or disorienter on our properties. Just rather a small-scale one to help offset electricity cost and possibly also look cool and have little maintenance costs.
Paul Gipe was promoting build and tested systems versus vaporware. Those cheap Amazon "400W" turbines are probably ok once tested as 20W backyard turbines
I can't believe how many times I have to send a link to this video to people. Latest one is a friend who was looking at Aeromine and thinking it would be the miracle solution to his offgrid energy needs. Thanks for making such a great and useful video.
As always, thank you, Rosie! Sadly, wind energy isn't the only scientific or engineering problem beset with hype artists and sleazy used car sales tactics (think the blonds draped over the fenders of Cadillacs)- nor are normally rational engineers proofed against buying in and getting in so deep they become part of the problem. Again, thank you for a "breath of fresh air"- your best engineering! FR
Excellent insight on how NOT to read about new renewable energy concepts! I think I will remember about all headlines ending with a question mark being answered No automatically. Let's keep an eye on them!
Ha ha, yep it's a fun game to play. I feel like it's about 90% accurate. My last video has "Can Lithium Ever be Green?" on the thumbnail, and I believe the answer will be yes. So I hope that is one exception. But of course this video's thumbnail question's answer is no!
@@EngineeringwithRosie but "Ever" is a longtime
@@EngineeringwithRosie Green as in up to million times cleaner than the fossil fuels being replaced by EVs and battery storage, yes, definitely.
Green as in zero pollution of any kind whatsoever, no, because the factory building the 100% clean and renewable powered mining machines was built from materials from a mine where one person's grandpa used an ICE car and some idiot WILL keep pointing at that as "proof" that renewables and EVs are totally worse polluters than ICE and coal and we should keep giving taxpayer money to oil companies instead of saving the planet.
My mother always told me to not call them idiots...but the only explanations for people using that strawman argument(or the one about windmills killing birds) are that either they are idiots who should not be allowed to breed, or they are traitors to humanity working for aliens who are trying to exterminate humans and xenofrom our planet.
@@EngineeringwithRosie Automatic NO? *_NO!_* ANY simplistic rule is subject to abuse by the unscrupulous.
@@AnalystPrime Another famous overgeneralization is embodied in your extreme example. Simple selfish greed and/or ignorance is sufficient to explain *_most_* of the world's evils. Even genocide is likely to have roots in old disputes over land, which typically stem from some belief like _"I need that land more than my neighbor needs it, because I don't like him."_
Thanks for discussing this. I've been meaning to buy or make a VAWT turbine for ages, couldn't decide how to go about it or which brand to choose. Just like solar panels, it sounds like there's still room for improvement with regard to wind turbine tech.
It annoys me that the media gets so carried away by new innovations, making you think - This is it! The answer to all energy producing problems! - only to never hear of the innovation again.
The problem with wind is always everyone tries to capture slow wind to produce energy. The energy law states if win has energy -> the collector gain only equal amount energy. So in wind designs the problem is always size. You need eithe big 30m collector to capture enough of that wind to produce energy. a Conical or plaine wings, conical is being the much worse than plain wings because plain wings can capture the the speed of wind not a mass. Think of water the same, if you would want to produce good amount energy you need to capture the speed not the water mass. Because the speed of water has energy not the mass.
Think of this way. The mass you capture from wind/water will always be negative to speed of wind/water. In engineering the problem is how to negate the mass and use only speed collecting what in a essence the industrial wind trubines do.
3er or 4th video I watch on your channel, definitely valuable content hard to find in CZcams, you won my subscription. Merry Christmas and Happy new Year!
Excellent video and commentary on the hype and reality of new tech!! Thanks.
Thank you Rosie! Insightful, as usual. You're one bird I'm glad has survived all those new turbines. Sorry, letting myself out..
😂 yeah that was a good one, I'll let you stay.
I spent 4 years modelling VAWT, and the torque issue I solved at that time in a gyromill with cam config for blade pitch. It got too complex . What I did find is that the apparent "wind" direction settles into just a few degrees deviation at higher TRS's. So a much simplified set up was born out of knowing the low speed would be a bitt ratty but high speed would be a lot more stable in torque output and efficiency. The major advancement came from using the tip vortices as thrust. It also lent it's self to easier maintenance and lower cost to install and transport. The alternator would be modulated to further reduce torque peaks , and that alternator would be at or near ground level giving the "drive shaft" a measure of torque damping. Container sized would produce around the 100KW. Remembering that ease of shipping and installation is much of the equation. There was also the possibility to use radical blade profiles. Biggest issue is the high G loading on the entire length of the blades and it's in shear not tension.
Paul was great, I loved his checklist and similar methods can be used to assess just about any claim that you could choose to look at. I'm pretty sure Carl Sagan would approve. He could benefit from a teleprompter though :P
I've never considered bird deaths in comparison to things like other large infrastructure or traffic before. Definitely a point of consideration. Another great episode, thanks Rosie :)
Yeah, it was my first use of a teleprompter! You can find the article on my web site and the list in my book. ;)
@@paulgipe6684 I'll take a look.
Yeah... Buildings kill birds and bats. Heck, there are routinely mass kills when a bunch roosting birds get spooked and fly into branches of trees. Birds (and bats) don't handle any sort of blunt force trauma well.
The main way to reduce bird kills is to pick a good site that large numbers of birds don't regularly fly through. One of the first large scale windfarms was put right in a migratory flyway... Which is where a lot of the idea that wind turbines are particularly bad for birds comes from.
Great video Rosie. Paul Gipe is a star!
I run a small wind turbine (450 watts) and other than the wires separating it has been with me since 2008. When I was lowering it for the wire repair I broke the blade(my bad).
No it doesn't do as much as I would like because of location, city rules, but it does keep a battery topped off.
Thanks for the good information, and keep up the good work
Yes! My favorite engineering show!
Engineering with Rosie is your favourite?! 😍😍 Thanks 😊
Great content and resource links. Thank you
This is great! i have at least one of Gipe's books on my shelf.
Great video..buid my first wind turbine 9 years ago..stil learning.
Another banger video. Paul's insight was phenomenal!
Rosie. One of the best ways I can think of to detect novel and useful advances in wind turbines is to ask two questions: (1) What are the major challenges to increasing wind turbine efficiency today? (2) Does this new wind turbine actually address one of those challenges? In this area, I think of advances in materials science and working out better fluid dynamic modelling. Neither one would probably make a good web site topic. Although I have heard about improvements in recyclability in all aspects of wind turbines--especially the blades.
The next turbine technology area I would like to see you cover is that dealing with water--both in oceanic (tidal or currents) and river settings. Water has such a wonderful density that allows an electrical generator to be useful at even small scales. I will watch for that topic on your channel!
that gentleman is the one i would trust to direct an government energy agency, good info, no bs, new subscriber
Not negative, realistic. Thanks.👍
just started looking at domestic wind turbines. you saved me a lot of time
Thank you for keeping it real, as you guys say :) It's pretty sad to see science being overtaken by sensationalism all over various media. If I got 1 dollar for every revolutionary new battery technology article in the last 5 years, I'd be able to build my own giga factory :D
Science reporting is always sensationalized to attract viewers and readers. It's so often complete bs and the writers know it. Real science news is found in peer reviewed journals and such. The average person finds it too boring so science communicators are sometimes prone to say things that aren't based in reality and once one person says it they just get quoted and we forget where the idea orginally got traction. Like... the space elevator. Remember the space elevator? Or just graphene in general.
Thank you for making this video!
I think you can go with a clickbaity title on this video! xD "Can these experimental designs revolutionize the wind turbine industy?"
You said that as a joke, but that's exactly the sort of small change that could make a big difference to watch time. And for this video I definitely think it's appropriate
😂🤪😬
Never. Hate click bait. I block all those and those who makes stupid thumbnails.
Very nice video…. Thanks!!!
That was incredibly interesting and also pretty hilarious! We keep falling for the same old tricks again and again. I agree that a lot of this is people getting very excited at the idea of a revolution in wind, which is great, but as you say these products are often not fulling the need people have in their minds. It was interesting you pointed out that these old failures can get a second chance if the wider system and technologies change. I wonder if you have any thoughts of breakthroughs in other technologies/regulations/behaviours that might indirectly benefit the adoption of wind turbines? It's still yet to show it's worth but I like the Alpha311 concept, as it makes more sense thinking of it as using wind turbines to improve the efficiency of cars, rather cars to generate wind energy. People have been chasing incremental improvements in car efficiency for years and it will be interesting to see if it is more cost effective to reduce the energy loses though recapturing it rather than focusing on the car aerodynamics etc. Thanks for the great videos as always!
The advances made in electric propulsion systems have a strong tendency to benefit wind turbines (power generators generally) as well. I.e. power electronics efficiency, improvements in electric motor designs (which become generators with mechanical power input), gear box efficiency & endurability. Another field strongly coupled to wind power efficiency is aeronautics & aerodynamics (blade design = wing design, see e.g. vortex reduction), and of course advances in compound materials. Graphene has been hyped a bit too much lately, but we will definitely see some outcome for both electromagnetic systems and material technology from this in the near future.
You are a brilliant team!
That guy Paul was accidentally one of the funniest guys I've heard on CZcams in a while. He probably doesn't realize how hilarious he is when he's busting down all these hot air, b.s. scammers.
I know that Paul Guy. 🤣🤣🤣
Thank you for making this insightful video Rosie 😊👍🔝
Thanks for sharing: Very good video!
An example of this in the UK was building mounted turbines which spectacularly underperformed as per this extract on page 13 of an Energy Saving Trust wind field trials report entitled Location Location Location; "No urban or suburban building mounted sites generated more than 200kWh or £26 per annum, corresponding to load factors of 3 per cent or less. In some cases, installations were found to be net consumers of electricity due to the inverter taking its power (up to 10W)from the mains supply when a turbine was not generating."
I wonder how many people who bought these products were put off renewable energy technologies in general?
Thanks Brian for mentioning the GB studies. I emphasize them in my sections on rooftop wind turbines. As you noted, some used more juice than they produced.
Have one of Paul Gipe books from the 80's. Have an Aeronautical BS degree and for fun as much as anything have calculated design, many over the years. Starting always you do not control the wind direction or speed related to time. Energy in the wind is a cubic relationship. You do not control grid power demand so what you are allowed to supply is not in your hands, and even home systems there are limits on capacity and rate. Can not ignore them because you can not control them they do not go away.
(PS earned higher then average salaries as an inventor across multiple technologies. So I like unusual designs and like analysis from principles.) Did lots of vertical axis air foil approaches and some balloon approaches. Never did a ducted because as Paul said material is cost and pointing into the wind with a duct that is massive isn't easy. Also did the bladeless vibrating cylinder.
So my conclusion is that the egg beater vertical is the simplest, lowest weight per output, and highest speed range. The problem is control or rather the lack. Have never seen anyone come up with a design that maintains simplicity and has good control. The best candidates are a snip of the egg beater from the bottom 'V', middle '||', and both together.
On the balloon side, still need efficient airfoils and the balloon has to have the lowest volume to weight ratio. Tethered balloon problems are all weight and handling. High speed generator to keep weight down and high voltage two wire tether that are like the lightest high power lines a strong center and a conductive coating. High frequency to put the current in on the skin results in a lot of inductance which forces the wires together which leads to insulation problems. and then there is handling of this tether cable and the balloon itself. Take it down in high wind and reduce its size to put in a container. Microwave transmission would eliminate the two wire problems but add weight and inefficiency as a high cost of power electronics in the air and on the ground.
Is the lovely sound the way Rosie talks because of her wonderful smile?
No.
It's because of her passion for renewable energy!
Please don't stop smiling :) you are the best person on youtube.
I build my own small wind gen sets. Just don't know how to do "real" testing.. I get volts and amp tests.. charges my batteries and im happy. Great video! Debunk scams is always a good thing. Keep encouraging the critical thinking
Very helpful, thanks.
I love the honesty of your video look forward to enjoying more
Brilliant vid Rosie thanks 😊
Best information ever! Thx
Very enjoyable video Rosie .. thanks. This video could just as easily been "Back to the Future of Tidal Energy Tech ... "
A voice of reason in the darkness- thank you for making this video!
I was told about other scam:
A friend of mine who is a meteorologist at a well known university had to "just sign off" a wind prediction for a new wind project. But - she sorrow looked over and got some problems with the numbers. Then she made a deep dive into the models. In the data she could reach she never got at least half the numbers. Then she interviewed the researcher. Finally he unveiled, he removed "the wood" (i.e. the covering) from his model - otherwise the model wouldn't converge.
Well with her official numbers that windpark hardly would pay off.
Looking forward to the next video on wind turbines that we should use
Excellent video!!!
I would love to hear your insights on Denmarks new Energy Islands project and their Power-to-X strategy. It is going to be a game changer for the energy industry. A pioneer project that opens up a new wind energy market around the world.
NICE ROSIE ! Great Video Rosie THANKS !
Thank's!
Thanks Rosie
One thing that is often missed is how to connect it up and the cost of doing so.
Once you get beyond the small off the shelf toys. You can't locate it on your roof or in the yard. It's simply too dangerous, where do all the bits go when it self destructs. Not only does it hurt, it costs a lot. What is often dismissed is the cost of a hook-up. Electricity is a highly regulated commodity and there is a premium on this knowledge.
The further away the generator from its load the more the costs escalate and the dimmer it's prospect become for all but the most diehard. e.g. If you consider a flow battery or fuel cell, it is far cheaper to pump the electrolyte around than install copper wire.
Clearly this an area that requires further input.
Someone who has built and operated Vertical Axis Turbines
Thank you
Really nice information.The way he is killing all the myths is just next level.He woke up and chose the violation.
If tech journalists used Paul's 11 tips, or variation of , before hyping up boondoggle tech start ups it would improve reporting and public engagement with real green energy projects.
That is also part of my thinking in deciding to make this video. If you know any boondoggle tech journalists, perhaps you could send them the link!
I think it should apply with "science reporters". There way too many news, even on TV about the new wonder game changing thing of today, and reality it is an scam, a lie, hot air; and these "journalists" are only interesting in the attention they get, not providing real stuff.
I would like to see more videos on the home turbines , which ones to buy , and even what materials to use to build your own turbines , I own several 3d printers It would be fun to make new designs and be able to test them. I was thinking about the attic turbines that are on houses to remove heat build up if they were a little bigger and had a motor that would be killing two birds with one stone, add this to a solar panel kit and a horizontal turbine you would be creating energy 24/7 and have it tied to the grid so when youre not using energy you could roll back your own usage and save more money.
Thanks for this one. I still think that every home owner should consider some sort of renewable energy and storage as a backup. If the laws in your area allow grid tie without it costing more... Go for it.
I don't think the future is millions of stand alone off grid generation stations, but instead a large amount of aesthetically pleasing solutions that every location does that can feed back into the grid. If every house hold and business captured the solar and wind that occurs naturally around their structures and were able to offset their demand on the grid..... Well that would mean that we would have to depend on giant generating stations less. Not eliminate them but depend on them less.
I experiment with some solar, some very small wind and some very small micro hydro. I am still grid tied, and I will be as long as there is a grid. I offset about 10% of my power needs, but I keep at it.
I am a big fan of hybrid systems. Wind solar and battery bank. I show people how to diy on my channel. I work with big names like xcel , not some random guy I India charging a cellphone
Very helpful 👌
Although we live at high altitude and have regular high winds, it's updates like this that keep me focused on solar.
Trying to build my own wind turbine after buying one last year (lantern type) which couldn't even reach operating voltage let alone wattage, so far it seems to work well both in horizontal and vertical positions but I haven't found a generator that I am happy with as most don't put out high enough voltage, and I need to refine how it's made (it's a bit DIY looking at moment).
Brilliant!
Muy interesante! Gracias por compartir
E visto cientos de videos acerca de este tema en los últimos años……. Y este es el único que vale la pena analizar una y otra vez,
I do like the idea of mini vertical wind turbines. Even if they are much less efficient, as given their size you (might) be able to place 4 on each corner of a building that would be unobtrusive as against a single more obtrusive or difficult to locate traditional turbine. How many small vertical turbines would be needed to match an equivalent small traditional turbine? Thinking about residential micro generation rather than commercial…
Thank you. You saved me some money.
Ok so what if you combine dyson parts to create a turbine? Basically using the wind to create a negative pressure system for a self sustaining turbine. I’ve seen many designs just non on a smaller scale. My thinking was to combine the parts of the dyson cyclone vacuum, with the bladless technology . From the fans to Frankenstein a generator together. I’m not all sure what has been done in the past to combine jet engine technologies to current turbines design?
Funny how this video was recommended to me after watching another ‘innovative’ wind turbine video from a guy looking for investors. (Harmony Turbines)
Hi Rosie, great work, it is obvious that wind and solar are complementary but the thing is not about models but about the greater idea of centralized or decentralized energy...decentralized energy production would be easy and manageable...just that I will let you elaborate on that in another video if you please....
I was really hoping Alphabet's Makani would pan out. It would also be neat to see some innovative wind turbine designs which actually did find a good niche.
... and an extra +1 for Paul.
Good stuff!
Hi Rosie. I would like to ask if when doing calculations for a small wind turbine directly coupled to a generator, do you assume that the rotor rotational speed is equal to the electric generator rotational speed and then compute TSR or do you assume the TSR ratio and compute the rotor rotational speed.
I read that amazing book "Wind Machines" in the early 1980s and have been unimpressed for 40 years whenever I encounter some so-called "new" windmill technology.
I have also studied many new proposals for small, home-sized wind turbines and agree with Paul that they all seem doomed to failure. I do think that many garage builders who are using partly or mostly accepted designs really do believe they have found the answer. But no matter how well versed they are in design concepts, they don't have all the understanding of what would be financially viable to be marketed as a cost saving method to pay for itself.
First, even the cleverest design still requires wind - preferably steady and significant amounts. And continuous maintenance, and rugged durability, and an almost perfect generator of electricity. Of course most also look like they could not last through a strong storm.
However, I would love to see Mr Gipe take a look at the Harmony Turbines startup, which is now being tested at three universities. Yes, it has two patents and some backers as they near getting the official test results. They are starting small, with fabrication in a shop built by the inventor, but he is convinced that his device will be an important future for wind energy and has a dream of it being sold worldwide. Almost everyone agrees that it looks different than anything seen so far - but it is supposedly a new version of an older design.
You can build a 10-12ft (1-1.5kw) axial flux horizontal axis turbine in your garage for a "reasonable" price if you're handy and have enough property in a breezy location. It's just very situational. I've helped install a couple myself, fun times!
Rosie, Paul , Very Challenging the Public Arena. This is One of the Brilliances to the Public Arena, it Tests You.
I Love the True Believing Nature of Your Opinons.
You Believe what You Believe and Your Sticking to it, Somewhat Admirable.
However ( Sorry this is a Question ), Can You Put the Maths on CZcams Which Proves a HAWT is Superior to a VAWT or Vice-Versa ?.
Yes I can Not Force You to Answer.
thanks for sharing what you know
I bought Paul's book after watching this
Well, the difference between cost effective and efficiency. Actual results of a particular design. Maybe talking about hype vs (as an engineer) build and test wind turbine designs and showing the results. Or not and just talk about stuff. Thanks for the vid.
In fairness, the designs that only appear on the internet are extremely bird friendly ... at least till the first prototype is spun up ;)
What matters is some ratio like bird stikes per GWh delivered. That number goes to infinity if no real energy has been delivered.
That ratio is also useful for comparing small turbines with the gridscale ones. I would love to see those numbers, as intuitively I would find it plausible that a small rooftop turbine is more bird-friendly than a windfarm; unfortunately I would also find the reverse effect believable. Until I see the numbers I don't know which intuition to go with...
That is a very good point, and a real tick in the pros column of making a website instead of hardware. No birds killed in the making of a website...
I like your bird deaths per GWh metric. I would love to see it, but few manufacturers are doing bird studies, and when they are done it is very dependent on the installation site. Some bird species are more prone to hitting wind turbines than others.
Yes, birds/TWh or GWh is the best metric and it is what I use. ;)
@@paulgipe6684 You need the percentage of (passing) birds killed per Joule to have the 'best' metric. So a 'population-loss per Joule' metric.
Otherwise, you can't compare two wind-turbine set-ups in two different locations.
I'm happy to see a more realistic outlook to this channel, your last few videos (mainly the gravity storage) had me wondering if you were just a hype channel that doesn't take the viability of new technologies seriously.
Ha ha that's so funny! I was really worried that my gravity storage livestream was too critical! At least one of the companies I covered I think it's 100% rubbish, the other two I am not so negative on, I feel there is a non-zero chance they'll succeed!
I mainly choose topics for this channel that I believe in because it's rough to tear someone else's work to shreds on the internet. None of these inventors think they're working on a dud, they put their heart and soul into it! That's why I chose nearly all old technologies for this video, it's much easier to give a brutally honest opinion if the company doesn't exist any more.
@@EngineeringwithRosieinteresting, I must be watching too many Thunderfoot Videos. Just gotten so used to criticism and I'm passively tuning it out.
did you actually watch that gravity storage video? she was very critical of those designs
Can you do an video about Solar updraft towers? I doubt they are "the future of windo energy" but I´ve loved them since driving by the one in Manzanares 30ish years ago. I understand they are less efficient than pv farms, but I´ve always wondered if treating the bottom part as greenhouses would change the economics of it. having the turbines near the ground is a good thing.
The City of Altoona in Pennsylvania is surrounded by mountain top turbines. (The traditional ones)-- Only problem: After they were installed, the state noticed that rare bats were being blendered by turbines....so they are required to be disabled from Sunset to Sunrise. The time they are needed for solar supplementation.
In physics at school I sometimes sat next to a guy who kept trying to invent perpetual motion machines, and every time he was as emphatically animated as the time before. He really did believe. I bet he's a salesman now...
I'm still curious to see what the Rosie Barns home built turbine will look like. And not of the gingerbread variety, more of the engineering variety.
I am super keen for that project too! But living in an appartment currently, it doesn't make sense to start such a project right now.
Given the material, I suspect the gingerbread variety turbine is the harder and more difficult project; even for one who lives in an apartment.
@@factnotfiction5915 I was hoping she was going to get a chance to try melted gummies as a adhesive this time around. But she's not doing the gingerbread thang.
@@EngineeringwithRosie is moving to an estate part of your dreams? If so I hope this works out for you. As will Roger's said buy land there not making any more of it