BUT THE MOST POWERFUL GREENHOUSE GAS KNOWN TO MAN----SF-6-----IS BEING RELEASED FROM WINDMILLS, SOLAR CELLS
Outcast_Searcher wrote:Interesting topic Plant.
After I read your post, I thought: "So OK. If there aren't alternatives to SF6, that's a big long term problem."
So I did a 5 second google search on "SF6 alternatives" and got a lot of interesting hits suggesting that the problem can be dealt with. As usual, how quickly and at what economic cost are the issues. Credible looking sources including the EPA and EE publishers are in the list of articles.
For example:
https://www.ee.co.za/article/alternativ ... ar-2.html#
https://www.researchgate.net/publicatio ... switchgear
https://www.epa.gov/sites/production/fi ... rkshop.pdf
For the third link, the chart at the top of page 11, contrasting the global warming impact of SF6 and the 3M Novec alternatives was striking. One showing under 10% of the warming, the other, under a 23,000th.
It looks to me that there was a lot of serious research going on as of 2017, re the dates of quite a few of the links.
Of course, the fact that I've never even heard of this suggests a certain amount of deliberate green-washing to me, but that's just my opinion.
So not doom, but isn't it odd that the EV plug-in fanbois seem to breathe NOT A WORD on this topic, even as they claim Musk is saving the world "real soon now".
Electrical company Eaton, which manufactures switchgear without SF6, says its research indicates that for the full life-cycle of the product, leaks could be as high as 15% - much higher than many other estimates.
Louis Shaffer, electrical business manager at Eaton, said: "The newer gear has very low leak rates but the key question is do you have newer gear?
"We looked at all equipment and looked at the average of all those leak rates, and we didn't see people taking into account the filling of the gas. Plus, we looked at how you recycle it and return it and also included the catastrophic leaks."
https://www.bbc.com/news/science-environment-49567197
GHung wrote:Eaton, one of the largest producers of this equipment. doesn't use the stuff.Electrical company Eaton, which manufactures switchgear without SF6, says its research indicates that for the full life-cycle of the product, leaks could be as high as 15% - much higher than many other estimates.
Louis Shaffer, electrical business manager at Eaton, said: "The newer gear has very low leak rates but the key question is do you have newer gear?
"We looked at all equipment and looked at the average of all those leak rates, and we didn't see people taking into account the filling of the gas. Plus, we looked at how you recycle it and return it and also included the catastrophic leaks."
https://www.bbc.com/news/science-environment-49567197
Plantagenet wrote:As the use of windmills and solar cells increases, and as more and more demands are put on the electrical grid due to population growth and the increase in EVs and iPhones and other electrical appliances, a bad thing is happening.
concentrations of SF6 in the atmosphere is very small right now compared to the vast amount of CO2 found in the air
asg70 wrote:From the article:concentrations of SF6 in the atmosphere is very small right now compared to the vast amount of CO2 found in the air
jedrider wrote:Climate change: Electrical industry's 'dirty secret' boosts warming
https://www.bbc.com/news/science-environment-49567197
Every day we learn of NEW way humanity is screwing itself over.
I don't quite understand how SF6 is used?? I didn't even know about it until two days ago when I saw it in a title on PeakOil!
EnergyUnlimited wrote:jedrider wrote:Climate change: Electrical industry's 'dirty secret' boosts warming
https://www.bbc.com/news/science-environment-49567197
Every day we learn of NEW way humanity is screwing itself over.
I don't quite understand how SF6 is used?? I didn't even know about it until two days ago when I saw it in a title on PeakOil!
SF6 has the highest resistance to electrical breakdown of all stable gases.
It will take ~8.9MV/m at atmospheric pressure, eg 3 times as much as air before breakdown.
https://www.electrical4u.com/sulfur-hex ... roperties/
FClO3 can compete but it is quite corrosive and a strong oxidant.
So certain high voltage equipment is sealed in chambers filled with SF6, sometimes in pressurized form to improve breakdown resistance further.
It serves no use in applications up to few kV, eg low voltage grid.
jedrider wrote:Thanks. At least, it serves a roughly useful purpose.
I am always surprised at how long the phase outs usually take. IMO, they should shudder all factories and replace the offending material. Of course, I recognize that there are materials that our industrial economy just depends upon.
asg70 wrote:So Trump was right in bringing back coal. Got it. Thanks.
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