An interesting little Vertical-Axis ‘windmill’

[Michael GilliganParticipant @michaelgilligan61133]

One of several in the shopping-precinct in Flint

… it was going like the clappers !

MichaelG.

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[peter1972Participant @peter1972]

I used to live in a listed thatched property in an exposed location which is heated by electric storage heaters. Looking up its Energy Performance Certificate online, I see a wind turbine is recommended at a cost of £15,000 to £25,000 which would give a “typical yearly saving” of £725. Of course solar panels could not be fixed to the roof.

[Michael GilliganParticipant @michaelgilligan61133]

These appear to be a combination of the Darrieus and Savonius designs

MichaelG.

[BazyleParticipant @bazyle]

There is an interesting vertical axis in development that is just a column. As you know tall metal chimneys vibrate due to vortex shedding so have spiral ribs running up them that somehow alleviate this. However by encouraging the vibration, making it resonate instead of damping it the movement can be harnessed by a generator. The idea is to have lots of poles in a field looking like a fence and not interfering with crop growing or grazing. This is probably the only sort the National Parks parasites would let me have.

[FulmenParticipant @fulmen]

@Michael: Yup, looks like it. As I recall the Darrieus design isn’t self staring while savonius is.

I must admit I have a particular of love for the egg-beater turbines, I think they are gorgeous.

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