B & Q wind turbines ?


R

Richard

What a bloody laugh.

Just been doing a few calculations on those bloody B & Q wind turbine
things, I reckon that by the time they have paid for themselves, the
bearings will have gone and the unit will be shafted.
So for all your troubles you will end up with a free scrap wind
turbine, which ironically will have created roughly the same amount of
carbon emissions in its production and subsequent disposal, as it saves
by coming into existence.
Its enough to make you want to roll about on the bloody floor laughing,
you may as well get one of those kiddies windmills from the seaside and
stick it on your roof, the effect on your wallet will be pretty much
the same.
 
B

Broadback

Pet said:
I was laughing a lot when I looked at them and their output of 500w at a
windspeed of 12m/s !

We are exposed to the full force of the S/W winds up the Severn and even
over the last few weeks the average speed has been hovering around 2 - 3
m/s so not really worth the hassle for such a small output IMHO
I hate these wind turbines with all my heart. How they can be called
environmentally friendly I do not know. The are a blot on the landscape
and noisy. Also the amount of power they generate is pathetic, only
those in Scotland get anywhere near the 30% the government forecast, and
the loss to transfer the power wipes that advantage out.
 
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M

Mary Fisher

I hate these wind turbines with all my heart.
LOL! While you're busy hating those you'll not be wasting your energies
hating other things :)

Mary
 
P

Paul D.Smith

I seem to remember reading somewhere that small turbines such as this can be
efficient if they're used to heat water (domestic hot water or for heating).
You can then use a simple immersion heater type arrangement which has little
of the eletronic jiggery-pockery required to sync. them to the mains
(seperate immersion element of course). I believe it's the electronics that
are wasteful for such "local" turbines.

Of course transmission loss from the big boys is a problem but it is from
all generators. The best location for a powerstation is "at the end of your
road" - but NIMBY immediately cuts on.

Better yet for gas generation is local combined heating and power systems.

Paul DS.
 
R

Richard

Paul said:
I seem to remember reading somewhere that small turbines such as this canbe
efficient if they're used to heat water (domestic hot water or for heating).
You can then use a simple immersion heater type arrangement which has little
of the eletronic jiggery-pockery required to sync. them to the mains
(seperate immersion element of course). I believe it's the electronics that
are wasteful for such "local" turbines.

Of course transmission loss from the big boys is a problem but it is from
all generators. The best location for a powerstation is "at the end of your
road" - but NIMBY immediately cuts on.

Better yet for gas generation is local combined heating and power systems.

Paul DS.
Its the initial cost thats the biggest problem, making payback time way
into its service life, if they were £50 the story would be different.
 
G

Guy King

The message <4u5c5iF16v7vuU2@mid.individual.net>
from Broadback said:
The are a blot on the landscape and noisy.
I think they look rather nice, and having camped and walked near them
I've never noticed them being much noisier than the wind that's powering
them when up close - further away they're inaudible.
 
M

Mary Fisher

Guy King said:
The message <4u5c5iF16v7vuU2@mid.individual.net>


I think they look rather nice, and having camped and walked near them
I've never noticed them being much noisier than the wind that's powering
them when up close - further away they're inaudible.
I agree wholeheartedly, for the large ones. I thought the OP was talking
about the small, 'domestic' sized ones. I've never seen one in action. A
supplier told us that our situation wasn't suitable, too much turbulence
from other buildings and trees.

Mary
 
H

HLAH

Richard said:
What a bloody laugh.
.
Its enough to make you want to roll about on the bloody floor laughing,
you may as well get one of those kiddies windmills from the seaside and
stick it on your roof, the effect on your wallet will be pretty much
the same.
I'm thinking about marketing ones with empty shells and no control gear at a
much lower cost. I think they will sell well to those who want something to
point to when people criticise their big 4X4s. Maybe I will add electric
motors so they turn and still fulfil their role when the wind isn't blowing.
They will sell well to politicians as well I expect.

H
 
D

Dave Liquorice

I think they look rather nice, and having camped and walked near them
I've never noticed them being much noisier than the wind that's
powering them
We are talking about small doemestic jobbies not commercial ones. These
small ones are noisy.
further away they're inaudible.
Doesn't mean they are not noisy but that is a different and very poorly
researched area.
 
A

Autolycus

Paul D.Smith said:
I seem to remember reading somewhere that small turbines such as this
can be efficient if they're used to heat water (domestic hot water or
for heating). You can then use a simple immersion heater type
arrangement which has little of the eletronic jiggery-pockery required
to sync. them to the mains (seperate immersion element of course). I
believe it's the electronics that are wasteful for such "local"
turbines.
Surely it's a complete nonsense to use a turbine to generate electricity
and then use it all to heat water? Why not just convert the mechanical
power to thermal energy by a paddle in a tank?
 
G

Guy King

The message <elk8vs$6qr$1@news.freedom2surf.net>
from "Autolycus said:
Surely it's a complete nonsense to use a turbine to generate electricity
and then use it all to heat water? Why not just convert the mechanical
power to thermal energy by a paddle in a tank?
Because that doesn't involve enough "technology" so isn't considered
marketable.
 
B

Bob Eager

I'm thinking about marketing ones with empty shells and no control gear at a
much lower cost. I think they will sell well to those who want something to
point to when people criticise their big 4X4s. Maybe I will add electric
motors so they turn and still fulfil their role when the wind isn't blowing.
If you do that, Mr Hansen will demand that the electric motors are solar
powered..
 
M

Mary Fisher

Bob Eager said:
If you do that, Mr Hansen will demand that the electric motors are solar
powered..
The pump on our solar hot water panel is solar powered. Excellent idea.

Mary
 
R

Richard

Ian said:
That may actually be harder.
Matching the paddle to the tank, making it quiet, reliable, and
transferring the mechanical energy reliably is quite hard.
Doing the paddle/heat thing on the turbine means that you need very well
insulated pipes, and some sort of circulation, which adds a whole new
kettle of water.
too many moving parts
 
T

The Medway Handyman

HLAH said:
I'm thinking about marketing ones with empty shells and no control
gear at a much lower cost. I think they will sell well to those who
want something to point to when people criticise their big 4X4s.
Maybe I will add electric motors so they turn and still fulfil their
role when the wind isn't blowing. They will sell well to politicians
as well I expect.
I went to a comedy club a while ago and one of the acts did a bit on wind
farms.

He reckoned he had discovered where the wind comes from - he had seen these
great big fans in Cornwall that made it. He knew it was true because the
faster they ran the windier it got! He also said he wouldn't like to pay
the electric bill to run them :)



--
Dave
The Medway Handyman
www.medwayhandyman.co.uk
01634 717930
07850 597257
 
R

raden

David Hansen said:
On Mon, 11 Dec 2006 23:35:13 +0000 someone who may be Peter Parry


Yawn.

It is reassuring when the best someone can do is to misrepresent the
views of others and then attack that misrepresentation.
You do so love to be a victim, don't you

were you abused as a child ?
 
A

Autolycus

Richard said:
too many moving parts
What a terribly sad reflection it would be on a country whose mechanical
engineering products powered the world, and which produced accurate
clocks 350 years ago (that are still running today), and built Merlin
and Napier Deltic engines, if we couldn't turn a shaft through a couple
of right angles and swish a paddle in a tank. Have we really got so
obsessed with "solve it in the software" that this seems too difficult
to contemplate? Cost? I can buy a mechanical watch movement, with auto
winding, and in one-off quantities, for 5 quid, so there is still the
capacity for low-cost manufacture out there.
 
D

Dave Plowman (News)

What a terribly sad reflection it would be on a country whose mechanical
engineering products powered the world, and which produced accurate
clocks 350 years ago (that are still running today), and built Merlin
and Napier Deltic engines, if we couldn't turn a shaft through a couple
of right angles and swish a paddle in a tank. Have we really got so
obsessed with "solve it in the software" that this seems too difficult
to contemplate? Cost? I can buy a mechanical watch movement, with auto
winding, and in one-off quantities, for 5 quid, so there is still the
capacity for low-cost manufacture out there.
I'll bet it's not made in the UK, though.
 
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