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  1. D

    Brexit, for once some facts.

    .. my point was the obvious one that there was an unintended and unexpected consequence weather related, from what was expected to have been the most weather impervious form of energy.
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    Brexit, for once some facts.

    .. this is a circular argument. The reason why current storage is adapted to short term leveling of supply is because this currently provides the best return on investment. IE is economically viable, provides more bang per buck. There are very few instances of where tidal barrages have been...
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    Brexit, for once some facts.

    A significant fraction of the staff in the London hospital where my daughter works, were in tears and shock in the days following the referendum , and I suspect were then making up their minds. The level of invective in public utterances at the time was such that no amount of placating talk...
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    Brexit, for once some facts.

    That was a serious situation, and alternative energy enthusiasts need to be conscious of a possible reoccurrence. Hence the requirement for pan european and intercontinental power networks... Which brings us back neatly to Brexit. We should be better positioned nowadays than 40 years ago. Those...
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    Brexit, for once some facts.

    My sympathy, having been in a very similar situation recently...
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    Brexit, for once some facts.

    ... Hard to get words that rhyme with Jeremy...
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    Brexit, for once some facts.

    .. agreed . The statement on wind power being erratic. but better to qualify that statement with "on a time scale of seconds to minutes to hours at any specified location." "Prohibitively expensive". At best an arguable point . It begs the question compared to what and over what time frames ...
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    Brexit, for once some facts.

    Apologies...
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    Brexit, for once some facts.

    Zatlan, you are busy mixing sensible engineering related facts with emotive, and highly subjective terms Let's analyse Wind is not reliable in the UK???? The wind has been blowing there since before 1701 ... And presumably for the million years before there was a UK. What you really meant to...
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    E-Bikes for Children

    ... I think that there are plenty of other devices which should also be made available. I noticed yesterday a lad using one of those single wheel step on devices with gyroscopic stability control. I imagined just how useful this would be for people with impaired lung function. Would it be to...
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    E-Bikes for Children

    .. the bikes or the children?
  12. D

    How to quick repair a puncture?

    No it could still be all right . Actually I am pretty sure it's fine. Rubber expands with air pressure.. just see what happens to an ordinary tube when you pump it up outside the constraint of a tyre wall.. it gets enormous and then it bursts. I reckon there is nothing wrong with your new...
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    Brexit, for once some facts.

    Yes it appears similar to a facility in the Wicklow hills near Dublin at Tourlogh hill. I had the pleasure as an undergraduate of walking through the mountain as the tunnel was being constructed on a field trip. There has been a proposal for lowering the cost by selecting suitable sites on...
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    Brexit, for once some facts.

    .. hello you pick a relatively sheltered site on the east coast, 5 miles from the sea, in the shadows of Sweden, Denmark etc and compare it to a location facing out into the Atlantic where the next landmass is what 5000 miles away!!!!. Be fair Look instead to parts of Cornwall, mull of...
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    Brexit, for once some facts.

    Modern equivalents include pumped storage systems where two lakes are dammed or constructed, one in a valley the other on the top of a mountain. A tunnel joins them and when energy can be stored , the generators are used as motors and pump water up hill .. currently in use in a number of...
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    Brexit, for once some facts.

    .. flecc again I respectfully disagree with the proposition That wind power will be only be a niche player. Even without the full pan european grids, and the advantages it will confer, there are now multiple instances where wind has on occasions produced in excess of 70% of autonomous countries...
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    Brexit, for once some facts.

  18. D

    Brexit, for once some facts.

    ... Are those wind turbines mounted on platforms at sea or ocean current turbines mounted below sea level . An Irish company Openhydro, with French finance is developing the latter, and they work reliably. There are a limited number of sites globally where they will be appropriate, but as I...
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    Brexit, for once some facts.

    ... And when you become the superior???
  20. D

    Brexit, for once some facts.

    .. that would be true. The speed of rotation of the blades remains pretty constant. The pitch of the blades is continuously altered in order to extract power. Looking at the monitor for these beasts , shows huge power swings over time scales of a second.. from 10% to 90% in the blink of an...