cycLED - CIWM presentation
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Transcript of cycLED - CIWM presentation
Procuring a circular economy? Towards zero waste CIWM conference 2013
Philip Harfield Senior Project Officer Ecodesign Centre
assess need
clarify choice….
define specifica3on?
LED 25000 hours (25 years)
Halogen 2000 hours (2 years)
The procurement decision!
Halogen – 35 WaG LED -‐ 5 WaG
procurement indicators!
LED -‐ £12.98 Halogen -‐ £1.45
Economic assessment of ligh0ng systems annual energy 126 kw/h 14 kw/h
Years Service System running cost (£) Halogen
System running cost (£) LED
3 96 60
10 250 72
25 481 91
(Swedish Energy Agency -‐ LCC tool)
LED closed loop opportuni3es
complexity increases: technical & non-‐technical issues
WARNING contains valuable metals. cri0cal elements.
Sapphire, Gallium, Aluminium, Gold, Silver, Tin, Indium, Chromium, Pla0num, Cerium, Europium, Terbium, YKrium, Silicon, Epoxy, Copper…
Indium
-‐ 13
Tin -‐ 40
61 -‐ Copper
Gold -‐ 45 Zinc -‐ 46
90 -‐ Nickel
116 -‐ Tanatalum
geological availability? (years)
(Source: Reller & Graedel, New Scien0st 2007)
impacts of supply
geopolitical – volatile prices
social – ethical sources conflict metals
Image source: www.sustainaly3cs.com
green economy demands complexity!
• 7 materials • Manufacturing energy 42MJ (per 20M lumen-‐hours)
• Use energy 60W
• 30+ materials (17 materials in LED chip)
• Manufacturing energy 343 MJ (per 20M lumen-‐hours)
• Use energy 12.5W
(DOE 2012, DEFRA 2009)
purchasing a supply chain
Image : www.sourcemap.com
how will you design to reduce & recirculate resources? will collec3on rates deliver viable streams? what processing technologies are emerging? what guides or tools inform/assist decision making? is a shid to service based business models realis3c?
complexity = ques3ons
take/make/use/break/dispose
the linear (sweep it under the rug) system is broken
why have you made it un-‐repairable? upgradable?
Glued in baGeries Pentalobe screws Soldered in RAM
Image source: www.ifixit.com
is obsolescence part of your business model?
problem: the things we procure aren't green enough; the greenest things buy into systems! poten3al: need for partnerships across value chain – (waste management to design) GPP needs to ask ques3ons which reverberate through value chain
Philip Harfield (Senior Project Officer) Ecodesign Centre [email protected]