Breaking News
Comments
Newest First | Oldest First | Threaded View
dick_freebird
User Rank
Rookie
re: Solar cell emission 23,000x worse than C02
dick_freebird   12/5/2012 9:52:04 PM
NO RATINGS
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
User Rank
Manager
re: Solar cell emission 23,000x worse than C02
chrisnfolsom   12/5/2012 1:32:48 AM
NO RATINGS
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
User Rank
Manager
re: Solar cell emission 23,000x worse than C02
chrisnfolsom   12/4/2012 9:57:05 PM
NO RATINGS
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
User Rank
Rookie
re: Solar cell emission 23,000x worse than C02
I_B_GREEN   6/18/2012 6:42:07 PM
NO RATINGS
stop all imports from countries that cananot prove they containment is above 99.9%

I_B_GREEN
User Rank
Rookie
re: Solar cell emission 23,000x worse than C02
I_B_GREEN   6/18/2012 6:40:08 PM
NO RATINGS
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
User Rank
Rookie
re: Solar cell emission 23,000x worse than C02
qaseemali   6/15/2012 5:53:40 AM
NO RATINGS
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
User Rank
Rookie
re: Solar cell emission 23,000x worse than C02
RDentonSr   6/14/2012 4:55:47 PM
NO RATINGS
So does this mean "wind" is the optimum "green" source of electric power? It only kills birds, not people.

CMathas
User Rank
Blogger
re: Solar cell emission 23,000x worse than C02
CMathas   6/14/2012 2:17:48 PM
NO RATINGS
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
User Rank
Rookie
re: Solar cell emission 23,000x worse than C02
Douglas.Butler   6/14/2012 1:55:38 PM
NO RATINGS
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
User Rank
Rookie
re: Solar cell emission 23,000x worse than C02
Mtocher   6/6/2012 7:20:38 PM
NO RATINGS
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



EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Fist Bumps & the Zombie Apocalypse
Max Maxfield
26 comments
Are you concerned about the possibility of a Zombie Apocalypse or do you scoff at the thought of such an eventuality? If the latter, would you be surprised to hear that the US military has ...

Rishabh N. Mahajani, High School Senior and Future Engineer

Future Engineers: Don’t 'Trip Up' on Your College Road Trip
Rishabh N. Mahajani, High School Senior and Future Engineer
8 comments
A future engineer shares his impressions of a recent tour of top schools and offers advice on making the most of the time-honored tradition of the college road trip.

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
41 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Karen Field

July Cartoon Caption Contest: Let's Talk Some Trash
Karen Field
151 comments
Steve Jobs allegedly got his start by dumpster diving with the Computer Club at Homestead High in the early 1970s.

Top Comments of the Week
Flash Poll
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)