Tesnic vs Darrieus - part II

This is the second part video that shows how the efficiency of the Tesnic turbine compares to the other wind turbines.

Category:

Science & Technology

Tags:

• TESNIC
• efficient
• wind
• turbine
• urban
• areas
• VAWT
• TESLA

[DonTruman]

I'm not a wind energy engineer, but, setting up a household fan doesn't strike me as being a very scientifically controlled experiment.

And as others have said, I don't see the significance of RPMs. A tiny little toy pinwheel can produce high RPMs, but that's meaningless for generating electricity.

[horianica]

A portion of the wind energy is converted into rotational kinetic energy. To calculate the rotational kinetic energy you need only two things: the angular velocity (derived from the RPMs) and the body's moment of inertia (based on the mass and shape of the rotating body).

The conversion of that rotational kinetic energy into electricity is a different story. Finding the appropriate generator that works efficiently at low RPMs and over a wide range of RPMs it's a real challenge.

[NZhouldhavewon]

@horianica I think you are getting confused between energy and power. there is a big difference. if you convert your kinetic energy into electricity your turbine will stop. RPM or more accurately rad/second * torque will give you power.

[horianica]

@NZhouldhavewon The most important element is to efficiently convert wind power energy into kinetic energy of the rotor. That's what Betz Law it's all about. Check Betz demonstration and see if there's anywhere anything about power. As I mentioned in previous replies, converting that kinetic energy efficiently into electricity is another story. Power, electrical power, is required at the demand moment. Keeping separate the supply and the demand will prevent the rotor to slowdown.

[horianica]

@NZhouldhavewon The most important element is to efficiently convert wind power energy into kinetic energy of the rotor. That's what Betz Law it's all about. Check Betz demonstration and see if there's anywhere anything about power or torque. As I mentioned in previous replies, converting that kinetic energy efficiently into electricity is another story. Power, electrical power, is required at the demand moment. Keeping separate the supply and the demand will prevent the rotor to slowdown.

[macrumpton]

The rpm by itself is not too meaningful without knowing what kind of torque is available. The darrieus can be going half the rpm, but if it has 3 times the torque it is the more efficient turbine.

[DeanC993]

wow Vawts these days are getting better and better thanks for posting

[Dubconferencedotorg]

Iam not an expert..but think, that these kind of turbineconcepts are superior - not because the efficence is higher .. but it can be installed on a normal roof. But the wind collector could be much bigger

[enticed2zeitgeist]

I don't understand this. What do the disks do exactly? They expand or contract and that somehow allows the turbine to spin in slower wind speeds but still take advantage of high wind speeds?

[zoebiflap]

I'd love to see some exact figures regarding preformance

[torkjoy1]

Can your turbine light up a 100 watt bulb at winds of say..20mph?

[eyeballsnot]

i think we really need to see the voltage & watts/amps output at the different rpms. i think it's great that it can start at a very low wind volocity, it is important in heavy urban areas.

if you can give me more DATA there can be a huge market in my city.