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Are Wind Turbines destroying the planet? - Sulphur Hexafluoride SF6

Discussion in 'General Chat' started by noirua, Dec 30, 2019.

  1. noirua

    noirua

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    Climate change: Electrical industry’s ‘dirty secret’ boosts warming – claims BBC
    https://tallbloke.wordpress.com/201...strys-dirty-secret-boosts-warming-claims-bbc/

    It's the most powerful greenhouse gas known to humanity, and emissions have risen rapidly in recent years, the BBC has learned.

    Sulphur hexafluoride, or SF6, is widely used in the electrical industry to prevent short circuits and accidents.

    But leaks of the little-known gas in the UK and the rest of the EU in 2017 were the equivalent of putting an extra 1.3 million cars on the road.

    Sulphur Hexaflouride SF6 the most potent greenhouse gas known to humanity. Which is needed in safety equipment for modern electricity making, but is 23,500 times more potent than carbon dioxide and the level are increasing. All you need to know here in this report, of the 'dirty secret' known about in the energy industry.


     
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  2. wayneL

    wayneL Rotaredom

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    The "clean" energy industry has lots of dirty secrets like this.
     
    noirua likes this.
  3. Knobby22

    Knobby22 Mmmmmm 2nd breakfast

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    Sf6 is used as an insulator gas in HV switching to stop arcing. Very popular in ring main units. It means you can make the equipment more compact.

    It's meant to be sealed forever.

    Of course, it's been around for many years (from memory the early 80s) and is used in many heavy duty electrical applications.

    Its not a clean energy application thing.
    Its an energy application thing.
    Ignorance is catching.
     
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  4. sptrawler

    sptrawler

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    Spot on Knobby, but the problem is, ignorance is getting the airplay ATM.
     
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  5. noirua

    noirua

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    Emissions of the most powerful greenhouse gas are rising rapidly
    https://www.weforum.org/agenda/2019/10/greenhouse-gas-emissions-climate-change-sf6/

    The amount of the gas – known as SF6 – in the atmosphere is minute, only about three parts per trillion by volume, but its global warming potential is significant. It’s 23,500 times more warming than carbon dioxide.

    SF6 has a number of properties that make it popular throughout the world as a cost-effective insulator. There’s little risk of land or water contamination. And equipment lasts longer, has reduced maintenance and is more compact, requiring a smaller land area.

    But some of these properties are also problematic if it leaks into the environment: it is very stable and lasts around 3,200 years, meaning nearly all the SF6 that has been released still exists.
     
  6. Smurf1976

    Smurf1976

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    Agreed it's nothing new.

    FWIW there was at least one participant in the energy industry in Australia which tried to estimate its SF6 emissions and put the figure in a public environmental report and that was back in the 1990's.
     
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  7. IFocus

    IFocus You are arguing with a Galah

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    Always felt reasonably safe switching HV gear with SF6 at least you could check the pressure gauge to see if it was still charged.
    Had one incident where a feeder SF6 breaker let go 22kV failed to open under fault condition not noticed then the main breaker was closed (not me a colleague) put a fairly decent hole in the adjacent wall the blast was contained in the cubical, some nice 1980's engineering.

    Switched a lot of 132 kV SF6 as well some times under serious loads never a problem.....thankfully.

    Of course these days they have all gone soft with remote switching......ahhh the days men were men.......and got fried :)
     
  8. IFocus

    IFocus You are arguing with a Galah

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    Back to the release of SF6 I think in 45 years I can only remember one maybe at a stretch 2 breakers losing their charge if they are serviced as required its not really an issue.

    Edit most of the stuff I saw in the late 70 / early 80's was oil bath
     
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