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#1
posted to rec.boats.cruising
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Whisper Wind Turbine
Thank you for your comments. But, I don't want anything like a 10
foot diameter wind turbine. That would be Much too big and unnecessary. I do want something bigger than the conventional 1.2 meter ones because I want more power and that means more diameter and the Whisper is the best bet at 2.1 meters/7 feet. That is the biggest it is sensible to be able to handle. And, I don't want to build the thing myself, either! And I don't want solar panels. They're too easy. And you have to keep moving them round with the sun. Yes, I know you can get all kinds of tortuously complicated gubbins and electronics that moves it round on a motor with the sun, but that is much, much too complex. So, as nobody has come up with any valid reasons why I should not put a Whisper on my roof, that is what I'm going to do. Peter |
#3
posted to rec.boats.cruising
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Whisper Wind Turbine
In article 5cc23ec8-73c8-47f4-84ed-3f2bf00f7c31
@k13g2000hse.googlegroups.com, says... Thank you for your comments. But, I don't want anything like a 10 foot diameter wind turbine. That would be Much too big and unnecessary. I do want something bigger than the conventional 1.2 meter ones because I want more power and that means more diameter and the Whisper is the best bet at 2.1 meters/7 feet. That is the biggest it is sensible to be able to handle. And, I don't want to build the thing myself, either! And I don't want solar panels. They're too easy. And you have to keep moving them round with the sun. Yes, I know you can get all kinds of tortuously complicated gubbins and electronics that moves it round on a motor with the sun, but that is much, much too complex. So, as nobody has come up with any valid reasons why I should not put a Whisper on my roof, that is what I'm going to do. Whatever little you are getting now, you'll get very little extra with the larger turbine blade diameter. IMO, its a bad idea, unless you are on top of a high aqueduct... Don't waste your money, you're too close to the ground for much useful wind power. I suggest looking at www.cat.org.uk, www.scoraigwind.com/rooftop.html, etc. You'd be better off with www.whispergen.com or installing solar water heaters to look after that part of your energy consumption. See www.navitron.org.uk/category.php?catID=71 -- John W To mail me replace the obvious with co.uk twice |
#4
posted to rec.boats.cruising
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Whisper Wind Turbine
On Tue, 26 Aug 2008 23:02:38 +0100, John Weston
wrote: Whatever little you are getting now, you'll get very little extra with the larger turbine blade diameter. Output varies with the square of the diameter. Three times as much is what you get with the larger unit. To digress a bit the state of Iowa gets five percent on its juice from wind, compared to one per cent nationally. The common 2 MW 150 foot rotor ones would equal a thirty barrel a day oil well. That is if the wind always blew. Chicago has the nerve to call itself the windy city, but Des Moines is windier. Casady |
#5
posted to rec.boats.cruising
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Whisper Wind Turbine
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#6
posted to rec.boats.cruising
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Whisper Wind Turbine
On Wed, 27 Aug 2008 11:11:36 +0100, John Weston
wrote: In article , says... Output varies with the square of the diameter. Three times as much is what you get with the larger unit. To digress a bit the state of Iowa gets five percent on its juice from wind, compared to one per cent nationally. The common 2 MW 150 foot rotor ones would equal a thirty barrel a day oil well. That is if the wind always blew. Chicago has the nerve to call itself the windy city, but Des Moines is windier. Ah but - the OP is most likely on a short mast, down amongst the surface turbulance - He's on a canal mooring somewhere and can't install anything substantial. Yes, he'll see increased output but will it ever recover it's increased cost of ownership? Typical boat installations can work since they are providing power replacement for the relatively small loads of nav lights and the like - but he's on a live-aboard... As with any such installation, one has to do the power usage profile calculations to see what is needed and look for the source that will more than meet the need - and divide the marketing data by two to get more realistic figures. As you may gather - I use motor generated power on my sailing boat. Whilst the UK has a good wind profile when compared to other European countries, the similar large wind generators run by the electricity supply companies are nowhere meeting their planned prerformance. The UK will not meet it's 20% renewables commitment with the current solutions so are in the throes of looking for alternatives. Practically all the private rooftop installations to-date are so under-performing most have been removed as not even generating enough power to cover that used by the controlling electronics required for connection the the user's mains supply. Maybe Iowa is windier than GB but here we are putting up 2 MW units as fast as we can build them, with several factories in the state. The units seem to be the maximum size you can haul down the road in large pieces. Cylindrical 50 000 lb sections of tower, as opposed to welding it up from small plates on site. One piece blades, There doesn't seem to be a downside. They aren't especially noisy or ugly, and don't take up much space. Casady |
#7
posted to rec.boats.cruising
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Whisper Wind Turbine
On Wed, 27 Aug 2008 20:36:54 GMT, (Richard
Casady) wrote: Maybe Iowa is windier than GB but here we are putting up 2 MW units as fast as we can build them, with several factories in the state. The units seem to be the maximum size you can haul down the road in large pieces. Cylindrical 50 000 lb sections of tower, as opposed to welding it up from small plates on site. One piece blades, There doesn't seem to be a downside. They aren't especially noisy or ugly, and don't take up much space. I've seen the towers in Iowa, the ones near Dennison, and they are impressive looking. Aparently there is a growing issue with power distribution however: http://www.nytimes.com/2008/08/27/bu...em&oref=slogin It isn't a problem if the energy is consumed close to where it is produced but the best winds are in areas with low population density. |
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