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dick_freebird
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re: Solar cell emission 23,000x worse than C02
dick_freebird   12/5/2012 9:52:04 PM
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You always see these "contains" or "uses" canards thrown out by people whose agenda it suits, but no quantitative emissions numbers, and of course the process gasses could be recaptured in situ if the manufacturer cared to. I've worked with flash X-ray machines which are just "lightning in a bottle" with the bottle full of SF6. But the bottle stays corked and losses are nil. Process gasses have to flow, but you don't see a whole lot of HF, silane, borane being vented (at least, not in the US, not these last few decades - but in the old days the industry sure did stank up some groundwater, dirty little non-secret). The feedstocks can flow to reclaim. But that is insufficiently scary to be useful in promoting whatever the "heck" these people are after. It's absurd, by the way, to call an inorganic compound "virulent".

chrisnfolsom
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re: Solar cell emission 23,000x worse than C02
chrisnfolsom   12/5/2012 1:32:48 AM
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When working for an electronics manufacturer in the late 90's when we moved manufacturing to Mexico the first thing we did was remove the extended condensation hoods for our cleaning tanks using the US certified CFC solvents to use the solvents still legal in Mexico - that was progress in the wrong direction. I wonder what the laws are in China and other countries we manufacture in.

chrisnfolsom
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re: Solar cell emission 23,000x worse than C02
chrisnfolsom   12/4/2012 9:57:05 PM
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The bird issues were with old technology - the larger, higher, slower rotating towers are safe for birds. Building with lots of windows are deadly though..

I_B_GREEN
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re: Solar cell emission 23,000x worse than C02
I_B_GREEN   6/18/2012 6:42:07 PM
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stop all imports from countries that cananot prove they containment is above 99.9%

I_B_GREEN
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re: Solar cell emission 23,000x worse than C02
I_B_GREEN   6/18/2012 6:40:08 PM
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I had mentioned this fact about over a year ago here in these discussion forums. When these plants were in the US IC or solar, we had good gov oversite of the release-containment-re-use of these chemicals. Or we had just gotten to a point we could. Then it all shiftede to the wild, wild east Where the rush to build and produce took over the need to not polute. The chinese will have created more greenouse gas emmissions in producing PV than all the Co2 reductions will ever have a chance to undo.

qaseemali
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re: Solar cell emission 23,000x worse than C02
qaseemali   6/15/2012 5:53:40 AM
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Solar Thermal is also a very good candidate for warm areas like the middle east and/or deserts elsewhere. Some remarkable work is being done in Spain regarding this technology. It certainly is more steady than PV and Greener too.

RDentonSr
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re: Solar cell emission 23,000x worse than C02
RDentonSr   6/14/2012 4:55:47 PM
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So does this mean "wind" is the optimum "green" source of electric power? It only kills birds, not people.

CMathas
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re: Solar cell emission 23,000x worse than C02
CMathas   6/14/2012 2:17:48 PM
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It sure would be good to know. Anyone out there? For me, it's one thing to wait--well, not 27 years--but to think that the cells are actually doing more harm boggles the mind.

Douglas.Butler
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re: Solar cell emission 23,000x worse than C02
Douglas.Butler   6/14/2012 1:55:38 PM
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I remember reading many years ago, when solar cells were much less efficient, that a cell would have to be used in average sunlight for 27 years to generate the energy that was consumed in making it in the first place. I presume that number has gotten much better since. But it would be nice to know what it currently is.

Mtocher
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re: Solar cell emission 23,000x worse than C02
Mtocher   6/6/2012 7:20:38 PM
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Here is a good reference for those seeking more knowledge on the subject: http://journalogy.net/Publication/5025870/environmental-impacts-of-crystalline-silicon-photovoltaic-module-production



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