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The OP-linked page points to a source URL at the bottom (An MIT 'Environmentally Benign Manufacturing' bibliography). http://web.mit.edu/ebm/www/publications.h
by 8bitsrule 7y ago
The OP-linked page points to a source URL at the bottom (An MIT 'Environmentally Benign Manufacturing' bibliography).
http://web.mit.edu/ebm/www/publications.htm http://web.mit.edu/ebm/www/publications.htm
After that URL it points back to a Low-Tech page called 'The monster footprint of digital technology'
https://www.lowtechmagazine.com/2009/06/embodied-energy-of-digital-technology.html' https://www.lowtechmagazine.com/2009/06/embodied-energy-of-d...
For a summary graphic, see figure 2 in this cited PDF (Gutowski et.al)
http://web.mit.edu/ebm/www/Publications/energy_required.pdf http://web.mit.edu/ebm/www/Publications/energy_required.pdf
- philipkglass 7y agoI did refer to figure 4 in that PDF. It shows aluminum around 16 kWh/kg for smelting. According to the accompanying pie chart, electricity used in smelting accounts for 75% of the energy used in aluminum production while bauxite mining, alumina refining, primary casting, and anode production account for another 25%. Starting from 16 kWh for smelting that would put the full energy intensity at 21 kWh per kg of aluminum.
- 8bitsrule 7y agoYeah, I misread the Figure numbering in that paper, it should have been '2' (which has a big black '4' next to it). On the whole, and prima facie, that graphic delivers much the same message, and rings true. Can't expect the L-T author to do -all- the work.