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|replicating example in Hendrickson et al 2006 book
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|Author:||tomgattiker [ Thu Jul 22, 2010 3:54 pm ]|
|Post subject:||replicating example in Hendrickson et al 2006 book|
I am teaching a course in sustainable supply chains for the first time this fall. I am hoping to incorporate LCA using eoilca dot net. As a supply chain guy, this is a stretch for me.
I have been working through the examples in the Hendrickson, Lave, Matthews 2006 book, in particular the car example in Chapter 6, and I am pretty much able to replicate the analysis in the book. However I am getting two discrepancies. When I use eiolca dot net calculate energy use for the car (worth $16k in 1997 dollars), I get 121,000 MJ of energy use. Fig 6.3 shows that this should be 200,000 MJ. The text says it should be 138,000. Perhaps there is a discrepancy between the text and fig (or, more likely) I am not understanding something, but in any case my 121,000 seems to not jibe with the book. I am using sector #336110: Automobile and light truck manufacturing
The other discrepancy is that for GHG for Petroleum Refining, I am getting 12,500 kg CO2 equiv, whereas fig 6.4 shows this to be approx 18,000.
Can anyone help me figure out what I am doing wrong or misunderstanding?
I am using the 1997 database, same as the book.
|Author:||hscottm [ Thu Jul 22, 2010 4:14 pm ]|
Tom - welcome to the forum and good luck with the class. Please keep us posted on your prep and how it goes.
With respect to your question, there is a very easy answer. The book is 5 years old and the data (even for 1997) was updated since the book was printed. There isnt much detail, but you can see a note about it at the following forum page:
Anyway, I get the same results as you so you're not otherwise doing anything wrong - just using different data than when book was written.
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