OMG the music! Completely unnecessary, distracting and really annoying. Why?

Vertical axis wind turbines have advantages. The drive and generator at the bottom of the tower for easy maintenance. Can pick up wind from any direction and work well in low wind. Aluminium honycomb blades are a bonus.

@SmartServo_org

2 жыл бұрын

agree with you

@johnrmcclure1

Жыл бұрын

and they don't kill birds as they often look like a solid mass at speed.

I was disappointed that there was not a single mention of the Lenz type VAWT. This video is therefore incomplete.

Background music is too loud, it's hard to hear the voice.

why are there some sources that say that for a 3 blade HAWT, the optimum TSR is 4.2? (4*pi/n), but some other literature says it's like 8

@SmartServo_org

Ай бұрын

The solidity (nxchord/radius) may be different

The description of TSR of horizontal is correct, but the descriptions of two types of VAWT are wrong.

What are the minimum wind speeds required to function for both types? And curious how they are different in stats on the minimum wind speeds.

@SmartServo_org

Жыл бұрын

I think the minimum wind speed for HAWT and VAWT is not only related to aerodynamics, but the mechanism is also very important. such as friction and the cogging torque of the generator.

@bialy100k

Жыл бұрын

For small (say up to 3kW turbines) you can expect below 30W from 1 square meter (of swept blades area) at 5 m/s not turbulent wind from HAVT and around 15W from Darrieus. For Savonius it goes to range below 10W.

@SmartServo_org

Жыл бұрын

This is true, because Darrieus must use small solidity blades to have high efficiency, which makes it difficult to self-start. Therefore, small wind turbines usually trade off efficiency for startability.

There is something wrong with Betz limit if kinetic energy is only 1/2 winds mass or 50% where can the other 0.926% of Betz limit come from regards Graham Flowers MEng

Dikey milli güç kanatlarını, Gelibolu MODELİ RÜZGAR TÜRBİNİNİN, GÜÇ ARTIRIM VE YÖNELTME KANATLARI İLE KOMBİNE EDEREK, TUR ve güç artışını gözlemlemek üzere GAYK kanatlarla birlikte deneyebilirsiniz.

The Darrieus is a good turbine for H2 production, but not in this way of the design. The turbine should not be placed in the centre, but on the outside of the circle. This way the Darrieus higher outside cirkle speed can be harvested. When the force of the wind gets stronger, you add more turbines, instead of brakes to slow it down. High winds produce much more electrical energie, never waste it with brakes, but use more turbines to harvest it. The vertical wind turbine can only use 1, but the Darrieus more, when you bild them smarter and place the concept in the southern oceans, where these high wind speeds are more often. Think in a donut way with no centre structure and you can make these wind turbines with a 1km circle radius or more. To reduce weight and friction you make them hoover. Now also when the Darrieus blades turn back into the wind, when rotating, you can add a option that it turns its blades to get much lower opposite force. Do not use steel, but carbonfiber structures to reduce much more weight and corosion risks and energie waste for producing steel. Use the same technic on vertical turbine blades to construced almost the whole turbine system in a donut shaped way. Now put the Donut inside a outside structure to keep it in place and in a maglev position... There you go...

These efficiencies assume an unobstructed venue. Efficiencies should be measured in many conditions to reflect that different turbines are better in swirling conditions such as rooftops of skyscrapers.

@johnswimcat

Жыл бұрын

That's a very good point Max

Comparative performance of Vawt and Hawt wind turbines. Vawt is at a lower altitude, and starts working earlier than Hawt. kzread.infoZqweCWvDos8

Thanks

Super ! :)

Tego mi było trzeba, szkoda że tylko trzy modele zostały porównane

@SmartServo_org

11 ай бұрын

Although there are many types of vertical axis wind turbines, there are only two basic operating principles of lift and drag.

And what about Ugrinskiy's rotor? It's supposed to be the most efficient vertical turbine.

@SmartServo_org

Жыл бұрын

Similar to Savonius

@teltevskoynick1521

Жыл бұрын

@@SmartServo_org with the low wind speed it can take 0.46 efficiency, according to experiments.

Me gustaría hicieran la comparación de eficiencia con la turbina de la patente mexicana registrada en el IMPI MX/a/2023/006829

@SmartServo_org

Ай бұрын

No documentation found for IMPI MX/a/2023/006829

If vertical wind turbine has automated positioning system it was the best, hwt is more reliability than vwt.

@SmartServo_org

Жыл бұрын

What do you mean by "automatic positioning system"?

@jtucehok

Жыл бұрын

Lol, vertical wind turbine is literally a cylider it doesn't matter from which side wind will blow.

but,... hawt is placed in completely diffrent envir9ment,..

@SmartServo_org

Жыл бұрын

HAWT is more demanding on the environment than VAWT.

As soon as I heard the AI narration I left. Use a frigging human narrator!

I could live with the synthesised voice-over but that music is dreadful, I couldn't watch any more than about 20 seconds which is a shame cos they probably have some useful info here

The VAWT could be more efficient than HAWT (it could even exceeds Betz limit) - this test video demonstrates that - kzread.info/dash/bejne/a6KduKl_hMbgf9Y.html

Efficiency is 100% down to were the turbine is placed, at sea with high wind speed a 3 blade HAWT will win. In your garden/yard a multi blade VAWT will easily be the best.

@SmartServo_org

Жыл бұрын

Yes, HAWT is a picky eater, but (Darrieus) VAWT's efficiency conflicts with self-starting, which is why I did it => kzread.info/dash/bejne/a3WY0smgkbLMdpM.html

@buddha2845

5 ай бұрын

​@@SmartServo_orgits very informative video on efficiency,,i want to install a wind turbine in my farm,,i want 5 kw or above output,,which design is best suitable? horizontal or vertical? Please advise

Betz limit has been smashed and debunked by the gyro wind turbine regards Graham Flowers

@forgaoqiang

Жыл бұрын

link please

@grahamflowers

Жыл бұрын

@@forgaoqiang KZread video the gyro wind turbine regards Graham Flowers

shlock

This is standing on a lie! The first questions should be what is your need! The model of a hybrid combo is not in this facts! A speed factor is not show in this facts! So it's not a question about efficiency it's a questions about your needs! If you need a 3 kWh a day. The Question is what is cheapest way to get it! 🥸