Brian Gaff snipped-for-privacy@gmail.com wrote
That doesn't create wealth, just more jobs.
Plenty of inventions and even operations like Amazon, Microsoft, Facebook etc.
That's wrong and it doesnt have to be exported either.
Bullshit it is with the best inventions.
I was under the impression that the wind turbine on a chimney nonsense went out in the 1990s when it was discovered that the controlling electronics often consumed more energy than the small wind turbine could produce. It was a growing fad before solar on the roof became more fashionable. If was good for boats in a marina it was good for household electricity generation :)
Not only is it the noise but the vibration can cause structural damage to the part of a house that in many cases is badly maintained in the first place - the chimney.
Bad ideas often come back ...
Every ship will have one more skilled staff/engineers to do maintenance and repair work 24/7. Ocean going ships are subject to a lot of ongoing work.
This document seems to suggest the MTBF Mean Time Between Failures for offshore turbines they analysed is 75 days.
CF our latest aircraft carrier..,All ships carry ongoing issues, which are logged, bodged on the spot or worked around until the ship is due for an overhaul.
As are aircraft.
That's improved then. Last time I looked it was 6 weeks
In message <tet9a1$2ikil$ snipped-for-privacy@dont-email.me, at 17:00:00 on Fri, 2 Sep
2022, John Rumm snipped-for-privacy@nowhere.null remarked:Meaningless on any one particular day, but averaged over the year it might be possible. Then on the windy days you store the gas you aren't needing to burn, so it's available on the less windy days.
In message <tetckh$2ispr$ snipped-for-privacy@dont-email.me, at 17:56:51 on Fri, 2 Sep
2022, GB snipped-for-privacy@microsoft.>That makes no arithmetical sense. Something is providing the other 3/4 and you won't be able to reduce the 1/2 that's on average generated by gas by 80% however hard the wind blows.
In the 70s there was a chap who attached a wind turbine to the side of his car to charge a battery as he went along. The cops didn't like it as they thought it could be dangerous to pedestrians.
I would expect part of the difficulty is that the intermittency is far more granular than "some days you get power, other days you need to fire up gas peaking plant". You can get significant fluctuations hour to hour. That means your backup generation not only needs to be available, but also be hot and spinning, ready to take up the slack. So a substantial amount of the gas you would notionally be "saving" you are still burning to keep the backup ready for action.
It also raises the question, does a combined cycle gas turbine plant that is idling, have the same (much higher) efficiency that is traditionally associated with CC plant when it is not running under load?
Unfortunately the carbon and cash cost of making it 'average out over the year' exceeds any value the windfarm actually has.
But as someone who hasn't done the sums, just taken them on trust,you wouldn't know that.
With variable pitch blades you can change the gearing...
But the basic principle stands that the energy you can capture is directly related to the kinetic energy of the wind - so the larger the area of the windmill, and faster it passes, the more that is available.
(you have the added complication that you can't actually recover all of the available energy since you don't want the wind to "stop" at the turbine - it needs to keep moving to allow "new" air to flow into it. The theoretical maximum you can capture is 59%)
The variable pitch will allow it to generate some energy in a wider spread of wind speeds than would otherwise be available with a fixed gearing. However there is no getting away from the fact that lower speed winds have less energy to collect in the first place.
True. Gas is so much more reliable. ;-)
Quite. Far better they work in a high street coffee shop. Than a useful job. But perhaps you consider electricity generation frivolous?
You don't only have to use gas. Germany is using brown coal!
Nope, I recall a claim from CD about RF heating some layer or other in the atmosphere interfering with the weather.
It's bonkers.
Perhaps with a little more training and effort, you could even become one?
Is that so competent engineers don't get too cold or hot?
This is where your incompetence shines.
A common problem with aerials. This became obvious in the 1940/50s when the long elements of the Band I aerials could go into oscillation. The fix was to fill the elements with something. Two things used were rope and sawdust.
Later when 12ft x 2" aluminium masts came into common use (previously they were wood) the masts would sometimes oscillate. The solution was to fix a small unnecessary aerial at a strategic point on the mast.
If the top of the mast was open the wind could blow across it and make a whoooo noise.
Cable taped down a mast at intervals could come slightly loose and vibrate, clapping against the mast. The answer was for the cable to come down in a gentle spiral.
Loose chimney and wall brackets could make tapping noises.
The cheap UHF aerials could have their plate reflectors come off the plastic clip. The plate was then free to bash against the top of the mast.
Sometimes idiots would fit an aerial with the mast very close to a gutter or corbelling. This would tap like mad when it was windy.
All of these would cause sound to transmit throughout the building.
Bill
Silly person.
Bill
Ah, you've understood what I told you at last.
Bill
You've missed the point.
Bill
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.