Electric car

keefysher

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Won’t anyone think of the Moon! It’s a natural resource we can’t just use it without consequences :rolleyes:

There was a renewable demonstrated in Nova Scotia and installing off Anglesey, Brittany, Japan & Oz
Guaranteed to be there every day and night, all year.

Tidal stream.

FTFY :geek::rolleyes::D:D

Tidal stream has potential to extinct oil & gas for electrical generation, and therein lies the issue, its not the lack of technical capability it's breaking the hold of O&G.

On the bright side, the O&G dinosaurs eventually see the light and realise another way as this item:
https://s3-eu-west-1.amazonaws.com/.../25095033/catapult-impact-report-2019-WEB.pdf

Page 22/23 has a great image of the test rig for 15MW wind turbine that is currently proving a 11MW unit. A battle to get there fighting the dinosaurs.

At 15MW thats 5x currently deployed offshore turbines. The 15MW are to be positioned where wind is constant day and night. To give an idea of scale the nacelle weighs 350tonnes, blades are 105mt long. The nacelle sits at 105m (blade length), plus wave height factor = 30m, so the tip of the blade is 240m above sea level.

There is a 15MW turbine in existence that was on that rig, but the O&G boys attempted to thwart its development, until realising the future is bright. Hopefully the re-emergence of the OpenHydro demonstrator will be picked up by an enlightened O&G major, just as 15MW wind has.

Statoil the Norwegian state oil co has pioneered floating wind turbines recently brought onstream offshore Aberdeen the O&G home.

Just to add this capability is British Engineering at it's best. Unfortunately the policy makers don't know what Engineering is :(

The rapid drop in cost of wind generation is testament to how things change rapidly.

Nuclear needs the same effort to give us energy security. The future is bright.
 

A.J.

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There is a renewable they haven't pushed yet.
Guaranteed to be there every day and night, all year.
Tidal.

We civilians here at the Coast have been asking that question for years. Our horizons are now filled with ugly wind farms which are destined for expansion. It is interesting that when you look out to Sea usually there are only around half of them actually that seem to work anyway. :rolleyes: We do of course welcome the local employment that is generated by Re-newable Energy for the locals albeit a lot of it seems to be imported labour. :(

A tidal generator was experimented with a few years back here but apparently it capsized and nothing seems to have been developed any further. :(:confused:
 

Frontstep

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We civilians here at the Coast have been asking that question for years. Our horizons are now filled with ugly wind farms which are destined for expansion. It is interesting that when you look out to Sea usually there are only around half of them actually that seem to work anyway. :rolleyes: We do of course welcome the local employment that is generated by Re-newable Energy for the locals albeit a lot of it seems to be imported labour. :(

A tidal generator was experimented with a few years back here but apparently it capsized and nothing seems to have been developed any further. :(:confused:


Just why tidal doesn't take off is a mystery to me, I know there were early issues but the reliability of the tides surely makes it worth chasing.

As most of us coast dwellers these days I often see stationery blades and on a cold winter days that's no good, but the tide still comes in and out.
 

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FTFY :geek::rolleyes::D:D

Tidal stream has potential to extinct oil & gas for electrical generation, and therein lies the issue, its not the lack of technical capability it's breaking the hold of O&G.

On the bright side, the O&G dinosaurs eventually see the light and realise another way as this item:
https://s3-eu-west-1.amazonaws.com/.../25095033/catapult-impact-report-2019-WEB.pdf

Page 22/23 has a great image of the test rig for 15MW wind turbine that is currently proving a 11MW unit. A battle to get there fighting the dinosaurs.

At 15MW thats 5x currently deployed offshore turbines. The 15MW are to be positioned where wind is constant day and night. To give an idea of scale the nacelle weighs 350tonnes, blades are 105mt long. The nacelle sits at 105m (blade length), plus wave height factor = 30m, so the tip of the blade is 240m above sea level.

There is a 15MW turbine in existence that was on that rig, but the O&G boys attempted to thwart its development, until realising the future is bright. Hopefully the re-emergence of the OpenHydro demonstrator will be picked up by an enlightened O&G major, just as 15MW wind has.

Statoil the Norwegian state oil co has pioneered floating wind turbines recently brought onstream offshore Aberdeen the O&G home.

Just to add this capability is British Engineering at it's best. Unfortunately the policy makers don't know what Engineering is :(

The rapid drop in cost of wind generation is testament to how things change rapidly.

Nuclear needs the same effort to give us energy security. The future is bright.

Statoil (or State Oil) is dead, long live the environmentally friend Equinor - take a look at Mariner
 

JohnArnoldBrown

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Using tidal energy must surely affect the moon, albeit a miniscule amount, since you can't expect to take energy/work call it what you will from a system without effect. But, as with all things of this nature, we have to take a short term view, an assume that humans, if they still exist by the time the moon falls out of orbit, will have devised some solution.
 

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Using tidal energy must surely affect the moon, albeit a miniscule amount, since you can't expect to take energy/work call it what you will from a system without effect. But, as with all things of this nature, we have to take a short term view, an assume that humans, if they still exist by the time the moon falls out of orbit, will have devised some solution.
It's already decided to leave us :(
 
OP
R

range rover

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Did you say that the wind doesn’t blow at night.?
That was a very broad statement, I don't know the figures but more often than not the wind moderates come nightfall. It may not tonight as a system is coming in from the Atlantic, but last night it was perfectly calm but this morning quite windy and pleasant.
 

Rappey69

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On my sailboat I have 210w of solar (about 9 amps on a nice day, barely 0,5 amps when raining and very overcast)) a wind generator (about 1-2 amps average but up to 20 amps in a very strong wind )
A hydro generator is also available giving 45 amps at 8 knots so I cant understand why when we have some pretty fantastic tides around the uk tidal generation is still not being used
 

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On my sailboat I have 210w of solar (about 9 amps on a nice day, barely 0,5 amps when raining and very overcast)) a wind generator (about 1-2 amps average but up to 20 amps in a very strong wind )
A hydro generator is also available giving 45 amps at 8 knots so I cant understand why when we have some pretty fantastic tides around the uk tidal generation is still not being used
Because it’s expensive and complex with many moving parts in a not ideal situation for maintenance. It’s also not as visible as windmills so more difficult for the snowflakes to feel good about
 

LostKiwi

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Because it’s expensive and complex with many moving parts in a not ideal situation for maintenance.
No more complex than a wind generator. A tide is nothing more than watery wind...
I would guess the stumbling block is environmental impact.
 

Craiglxviii

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No more complex than a wind generator. A tide is nothing more than watery wind...
I would guess the stumbling block is environmental impact.
Correct. It’s hugely invasive if done at scale.

The tricky one technologically is wave power, as I understand it.
 

LostKiwi

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Correct. It’s hugely invasive if done at scale.

The tricky one technologically is wave power, as I understand it.
I've seen a few interesting designs in the wave power arena. One was like a giant floating snake comprised of many segments. Movement of each segment relative to its neighbour generated power.
The other was a vertical design like a large floating tube anchored to the ocean bed. As the tube rises and falls on the waves the anchor cable operates a generator.
I also recall seeing an interesting deep sea one that used the temperature difference between the surface and the depths but can't remember how it worked!
 

3146bj

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While a tidal generator is mechanically no more complex than a wind generator, it is much more expensive to operate and maintain in a highly aggressive and corrosive environment and consequently has very high running costs over a relatively short life span. A couple of floating ones have been tried in Oz, but none are now operating and I believe are now quite effective Scuba diving reefs.

I also seem to recall a tidal generator has been operating at Dinan or near there for many years and can probably provide a lot of real life information.
 

Craiglxviii

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I've seen a few interesting designs in the wave power arena. One was like a giant floating snake comprised of many segments. Movement of each segment relative to its neighbour generated power.
The other was a vertical design like a large floating tube anchored to the ocean bed. As the tube rises and falls on the waves the anchor cable operates a generator.
I also recall seeing an interesting deep sea one that used the temperature difference between the surface and the depths but can't remember how it worked!
Thermocouple!
 

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LostKiwi

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littlebrooklyn

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My son has some friends who bought a Leaf car. I thought it odd at the time as they lived in a first floor flat with limited parking and I doubt they had a charging point there, I'm still not sure where they did charge it. They both worked at Heathrow Airport too, so both were using the car to get back and forth sometimes 4 times a day as one worked nights and the other days. Not sure what car they have now but I know it's a petrol one. Can't understand why they thought buying it in the first place was ever going to work o_O
 

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