NEEPS

Martin · Neepster Joined: 16 Sep 2007 Posts: 169

thankyou!

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scotsman · Posted: Mon Jul 14, 2008 4:54 pm Post subject: Moving on

Hi from west oz,
Moving on from the last reply whilst watching foxtel tonight i have seen an array somewhat similar to the previous design. However it had some differences internal to the blades was a helical scoop the discription was " a DNA spiral" it was designed to do no more than 350rpm in any wind therefore not producing the previously mentioned noise transmited through the structure and into the building. The building was in mchigan i believe and was designed with rounded top edges to allow for more efficient use of the air travelling over the structure. The system was shown both in a prone and upright configuration and was powering the hole building I believe it was 10KW of power I could be wrong on that. The programe was Eco-tech (spellibg could be wrong) well worth a look.
I am looking at having my next abode (and I use that word knowingly) self powering by solar and wind in the near future. I will look on internet for link and put it on later.
Doug

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My motto is " The only silly question is the one not asked"
Doug

Martin · Neepster Joined: 16 Sep 2007 Posts: 169

yawns loudly - seen it, all the above comments apply - there is no such thing as a silent mount, and the wind over buildings is far too turbulent to be of any use in generating electricity

(unless they've managed to rewrite the rules of physics.....)

http://www.wind-works.org/articles/FantasyWindTurbines.html
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scotsman · Posted: Mon Jul 14, 2008 5:01 pm Post subject:

programe is eco-tech will look tmrw for website

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My motto is " The only silly question is the one not asked"
Doug

scotsman · Posted: Mon Jul 14, 2008 5:41 pm Post subject: okay

Well it is on again at 730am Western Australian time on foxtel so I had better get up early, but I had first better go to bed as its 0035 this morning already. Not much wonder I'm tired cya in the evening my time with more info perhaps.
Good

night.
Doug
_________________
My motto is " The only silly question is the one not asked"
Doug

Martin · Neepster Joined: 16 Sep 2007 Posts: 169

http://www.helixwind.com/en/product.php

what is funny is that they quote two of Paul Gipe's "giveaways that it's a fraud" - (that it's "silent", and that it's "safe for animals") - there are also no performance figures to be found anywhere - that'll be an American Chocolate Teapot then!

I note that it also doesn't even "get out of bed" until the wind is doing 8mph......from our experience, thanks to wind turbulence over a roof, it'll be lucky to ever get a sustained wind in excess of that speed

it's a con!

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scotsman · Posted: Tue Jul 15, 2008 1:41 am Post subject: I'm up

Goodmorning all I have just watched it all again and have more information on the system running in Chicago (I did get it wrong). the system is designed and built by Aerotecture Int'l the website is www.aerotecture.com and does go a long way in explaining the principles involved. The project link shows the project in question Mercy Lakefront SRO there is also a project description. Hoping this helps and as they say never say never.I supose I would be difficult to say there is no vibration free mounting but there again didn't someone say that we would not be able to travel any more than 40 mph? I think they got that wrong eh.
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My motto is " The only silly question is the one not asked"
Doug

Martin · Neepster Joined: 16 Sep 2007 Posts: 169

they too use exactly the same "giveaway that they're a con" claims -
(that they are silent, and safe for animals) - at least they have the honesty to admit that they're not going to work on most "small homes".........

If you think about "silent" mounts, they are incredibly difficult to achieve in practice - they depend for their effectiveness on interposing some sort of bungy between metal surfaces, as soon as the wind blows, it will be "up against the stops", the bungy will be fully compressed, and will effectively become "solid", and transmit noise (the noise is not the "swishing" of ther blades, but bearing noise, which can be horrendous, even from tiny and well built turbines)....... :?
The turbines are nothing particularly new, they are "VAWTs"- "vertical axis wind turbines" - the one advantage they have is that they can accept wind from any angle without having to "yaw" into the wind like a conventional turbine, BUT are not any good in low winds as they take quite a blow to get them up and going. As Paul Gipe says in the linked article, there is nothing new in turbine design, there are no easy fixes!
As to building mounting turbines, it does not work (both because of noise, and virtually nil performance due to building induced turbulence). Here's a clip from "Newsnight" which shows the truth about them,, during which the interviewer gets the Managing Director of Windsave to admit that you'd be lucky to get £10 worth of electricity per year out of one of them.........

http://epogee.co.uk/e107_plugins/.../ytm.php?view=WVo0WvuX7K0&p=1
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scotsman · Posted: Tue Jul 15, 2008 2:20 pm Post subject:

It must be poetic justice i have nearly finished 3 times and then a blackout....... :smt067 ...power companies! (PC'S)
Here we go again.

Having looked at the blog it fairly obvious that that system would do no good at all!
Over here we like you have large wind farms good things I say for instance Albany south of us on the coast get 75% of their power from the wind farm some 15000 homes not bad, but as you say noisy and owned by companies who want to make money out of us now that is BAD!!!

The Federal Govt has a rebate scheme for both solar power and hot water and here in West Oz we get a rebate from the State Govt as well so we are in front.........

www.environment.gov.au/rebates

My daughter and her partner have 14acres and are about to build on it and have found out it will cost heaps to out scheme power on to the site.
However due to the rebate scheme we are looking at putting on a stand alone solar system which will be enough on its own to power everything.
With us being so lucky with sunshine here except in the winter months, such as today Baby weather (wet and windy) it makes sense to put a wind powered back up system as well.
We will be also running a closed cell Aquaponics system and with the stock carrying capacity we will become more self sufficient in the not to ditant future..........

Anyone wanting to look at Aquaponics we have a good site here in Oz which will give you a good idea on how it works and how fast it produces at least here. The system we will be building willl run on 12 volts and will be 100% solar powered..........

www.aguaponicshq.com

I have had enough of power companies telling me what I am going to have to pay so the can go and play with the trains as far as I am concerned.
There are a growing number of people going solar here in Oz and some are making it pay they sell the excess back to the grid and because of there own reductions in power usage are getting more back from the PC's and over the year get more back than then pay......

Doug
_________________
My motto is " The only silly question is the one not asked"
Doug