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Forum Index : Windmills : Condensation observations

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Jarbar
Senior Member

Joined: 03/02/2008
Location: Australia
Posts: 225

Posted: 11:29am 16 Nov 2009

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Another one of my far fetched ideas might be to fit a peltier device inside each Aluminium blade at the tip.Or more than one along it's length.Using the peltier as a dump load the mill could potentialy create water from the condensation on the cold side while the heat be lost to the airflow from the other side.

My PVC blades have copius amounts of dew on the surface morning and evening.Which side of the blade would be better hot or cold I'm not sure.I envisage a slug that fits into the trailing edge made of aluminium with a slot to carry peltier internally.I often see contrails on the trailing edge of formula 1 car rear wings.Maybe the tip speed of the cooled blade surface could do something similar.Anyway some one can shoot it down,just an idea.

Or would it better to direct drive a compressor and use the sealed stainless steel tubes supports as the expansion chamber for the compressed gas to freeze the blades.The general premise being that many places on the planet have limited water yet moister in the air exist as humidity and cold blades spinning at speed might allow harvesting by water flicking off into a circular trough.

As with my windmill science my refrigeration has some way to go.Maybe a seed for someone else to pursue or bury.

Anthony.

"Creativity is detirmined by the way you hold your tounge".My Father
"Your generation will have to correct the problems made by mine".My Grandfather.

KarlJ

Guru

Joined: 19/05/2008
Location: Australia
Posts: 1178

Posted: 11:46am 16 Nov 2009

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water from air...interesting idea!

the temp variation side to side of a blade this small would be negligible.

Freezing things from a structural perspectve is not a great thing!

Luck favours the well prepared

Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5123

Posted: 11:59pm 16 Nov 2009

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I do think there is something in this idea Anthony. Everything you need is up there at the top of the mast. Energy from the wind, moisture in the air.

The airconditioner for my room at work has a bucket I need to empty 2 to 3 times a day. Thats a lot of water. I think a wind powered moisture trap like your suggesting would have a steady drip drip whenever the wind is blowing and there's enough moisture in the air.

Now I'm eyeing off that 12v peltier fridge I picked up for $5. Do I really need a 12v fridge

Glenn

The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ

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