World: r3wp
[Tech News] Interesting technology
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GrahamC 23-Apr-2011 [5979] | You run your server in the attic? the hotest part of the house?? |
Kaj 23-Apr-2011 [5980x2] | Some days of the year, yes |
Then again, we don't have hundreds of heart patients hanging off it | |
GrahamC 23-Apr-2011 [5982x2] | I think I should setup a secondary fall back server in the Singapore availability zone. Hopefully what happens in the USA does not impact other regions. |
Amazon's talk of region isolation was clearly not true. | |
Kaj 23-Apr-2011 [5984] | Houses here don't have cellars anymore, because, as anyone knows, electricity is always there... |
GrahamC 23-Apr-2011 [5985] | Don't most Dutch houses have wind mills on them for power? |
Kaj 23-Apr-2011 [5986x2] | Just a few farms |
And besides, they run the machines that cut out the wooden shoes | |
GrahamC 23-Apr-2011 [5988] | and the wooden shoes are burnt to make steam? |
Kaj 23-Apr-2011 [5989x2] | When a hunger winter comes, yes |
That's when we eat the tulips | |
GrahamC 23-Apr-2011 [5991x3] | http://www.wind-works.org/articles/noiseswt.html search for Chiu to find out about the wind turbine I had on my house :) |
And here's a picture of my turbine http://www.compkarori.com/images/air403.gif | |
I have an inverter so that I could use the power from the 12V batteries to power my server | |
Kaj 23-Apr-2011 [5994] | It says you still have it but it will cost you tonnes to turn it on... |
GrahamC 23-Apr-2011 [5995x2] | I don't have it anymore .. the company took it away :( |
The threat of a $200,000 fine was a little too oppressive for me | |
Kaj 23-Apr-2011 [5997] | How big was it? |
GrahamC 23-Apr-2011 [5998x2] | not very big .. just over 1m span I think. Made lots of noise energy only! |
I think they use these on small boats where if the neighbours complain, you just sail somewhere else! | |
Kaj 23-Apr-2011 [6000x2] | :-) Yeah, I've seen those in recent years |
So they make too much noise because they're too small? | |
GrahamC 23-Apr-2011 [6002x2] | yes |
well, because they spin so fast | |
Kaj 23-Apr-2011 [6004x2] | That's the case with CPU fans, as well |
Size matters. The bigger the better | |
GrahamC 23-Apr-2011 [6006x4] | to shed energy ( so that they blades don't fall apart ), they undergo fibroelastic shudder |
which creates vortices and lots of noise | |
flutter | |
here's a picture from the roof .... http://www.compkarori.com/images/karori403.jpg | |
Kaj 23-Apr-2011 [6010] | I've been riding my bicycle under those really big ones in a big storm. Pretty impressive |
GrahamC 23-Apr-2011 [6011] | I thought I would be far away from the neighbours .. but clearly I was not |
Kaj 23-Apr-2011 [6012] | It looks quite close. The noise of small fans is very high pitched. It annoys the hell out of me, too |
GrahamC 23-Apr-2011 [6013x3] | I was going to short it during the night which basically puts a break on the whole thing. And leave it going during the day |
Even with the turbine shorted .. it still spun quite fast in a strong wind | |
One of these days I'm going to cover my roof in Photovoltaic panels | |
Kaj 23-Apr-2011 [6016] | The longer you wait, the more efficient they become :-) |
GrahamC 23-Apr-2011 [6017x3] | True ... there's a lot of research in this area |
I think you can even create tiles of the PV panels and use them to cover the roof | |
And I think I've seen flexible ones that can wrap around objects | |
Kaj 23-Apr-2011 [6020] | You could have clothed you wind sculpture with them ;-) |
GrahamC 23-Apr-2011 [6021x4] | To maximize the benefits from PV panels you need to track the sun and not the wind! |
Most passive sun trackers use an inert gas which vapourises and condenses elsewhere changing the balance so that the whole thing pivots with the change in weight redistribution | |
A bit like a sun flower I guess | |
or a tulip? | |
Reichart 23-Apr-2011 [6025] | I'm planning on VAWTs. Make little to no noticible noise. Work from any direction, so less parts. |
GrahamC 24-Apr-2011 [6026x2] | And sadly the Savonius design is very inefficient. I helped my child build one for her science fare though .. still got it. |
I looked at these years ago http://www.windside.com/technical.html#WS-4C but deemed them to be too expensive | |
Reichart 24-Apr-2011 [6028] | Electricity in Maui is .33 per kw... All alternative power options are "worth it". |
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