4 ms·
Scepticism is sometimes a lazy response but in this case I think you are completely correct. Power from a wind turbine varies as the square of wind speed and t
by VBprogrammer 4y ago
Scepticism is sometimes a lazy response but in this case I think you are completely correct.
Power from a wind turbine varies as the square of wind speed and the cube of diameter. Some places in the world have a lot more wind than others in general, someone once said that if the wind is a persistent annoyance where you live then a wind turbine is a good fit. Without specifying the conditions under which this is the case then its pointless.
- jakobnissen 4y agoIt's the other way around - cube of wind speed. So wind speed and consistency is critical
- VBprogrammer 4y agoI knew I shouldn't have gone by memory!
- aitchnyu 4y agoHmm, I can imagine a 2 meter blade intercepting 4x the area of the moving air column and capturing 4x the kinetic energy. KE is proportional to the square of velocity. I'm having trouble imagining how a column of air moving 2x the speed generates 8x the power. Does it mean 2x the speed mean 8x the energy that can be captured?
- VBprogrammer 4y agoI can't actually remember the explanation but thinking about it E=1/2mv² but when the air is moving twice as fast the mass of air passing the wind turbine would also double. Sounds plausible at least.
- jakobnissen 4y agoThat's exactly the reason why. Kinetic power of each air molecule scales with the square of its speed, and the number of air molecules passing over the wing scales linearly with speed.
- ErneX 4y agoAgreed, but this has the advantage of being able to generate at night.
- solarkraft 4y agoBut the lazy response is the totally right one. Oh, you have a super simple technology that is 10x better and 10x cheaper than what already exists? And you've been chugging along trying to bring it to market for 5 years and nobody wants to invest? Yeah, everyone else must be stupid or something ...