7-IE-6-Feb-08

7-IE-6-Feb-08 - Room for Tomorrow, 7 February: BH1520...

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Industrial Ecology – Winter 2008 – Session 7 – February 6 Reading for Monday, 11 February: Reading for Monday, 11 February: Life cycle assessment of disposable and reusable nappies in the UK, Environment Agency, Bristol, UK, 2005 pdf available on course website: http://www.bren.ucsb.edu/academics/course.asp?number=282 Deadline for 2 Deadline for 2 nd nd assignment: assignment: Wednesday, 13 February 2008, 10am assignment available on course website: http://www.bren.ucsb.edu/academics/course.asp?number=282 Room for Tomorrow, 7 February: Room for Tomorrow, 7 February: BH1520 BH1520
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Industrial Ecology – Winter 2008 – Session 7 – February 6 The LCI of a product system can be calculated as n n n n n n n γ q e × × = × = - 1 A B B Reminder: The computational structure of Reminder: The computational structure of process LCI process LCI inventory) cycle (life flows elementary resulting of Vector levels activity process of Vector flow) (reference output desired of Vector flows elementary of Matrix flows ry intermedia of Matrix e q e e e B A
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Industrial Ecology – Winter 2008 – Session 7 – February 6 Flow Process Reference flow Electricity production Aluminum production Aluminum foil production Use & disposal MJ electricity 1 -50 -1 0 0 Kg aluminum -0.01 1 -1 0 0 Kg alu foil 0 0 1 -1 0 100 packages 0 0 0 1 0.1 Kg bauxite 0 -5 0 0 ? Kg crude oil -0.5 0 0 0 ? Kg CO 2 3 0 0 0 ? Kg solid waste 2 10 0 1 ? Reference flow 10 packages Process LCI Example Process LCI Example Electricity production Aluminum production Alu foil production Alu foil use & disposal
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Industrial Ecology – Winter 2008 – Session 7 – February 6 = - - - - - = - 1 0 0 0 1 1 0 0 02 . 2 02 . 2 2 02 . 0 102 102 100 2 1 0 0 0 1 1 0 0 0 1 1 01 . 0 0 1 50 1 1 A A = × = × = - 1 . 0 1 . 0 202 . 0 2 . 10 1 . 0 0 0 0 1 0 0 0 1 1 0 0 02 . 2 02 . 2 2 02 . 0 102 102 100 2 1 q e e A γ Activity levels - - = × - - = × = 52 . 22 6 . 30 1 . 5 01 . 1 1 . 0 1 . 0 202 . 0 2 . 10 1 0 10 2 0 0 0 3 0 0 0 5 . 0 0 0 5 0 B e Kg bauxite Kg crude oil Kg CO 2 Kg solid waste LCI Process LCI Example cont. Process LCI Example cont.
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Industrial Ecology – Winter 2008 – Session 7 – February 6 The computational structure of The computational structure of input-output LCI input-output LCI 1 1 Here the product system is modeled using an economic input-output table m m R R × D a b c d e a 0.2 b 0.1 c 0.1 d 0 e 0.3 Columns a industrial sectors Rows a the same industrial sectors This is the input (in $) from sector c required to produce $1 of output from sector a.
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Industrial Ecology – Winter 2008 – Session 7 – February 6 The computational structure of The computational structure of input-output LCI input-output LCI 2 2 a b c d e a b c d e x I O e e = × D = Output vector Input vector input of producers = output of 1 st tier suppliers
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Industrial Ecology – Winter 2008 – Session 7 – February 6
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7-IE-6-Feb-08 - Room for Tomorrow, 7 February: BH1520...

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