+1 vote


I recently read the PDF on energy indicators "Calculation of energy indicators in MJ, LHVs: An addition to the CED LCIA method" available here: http://www.openlca.org/wp-content/uploads/2017/10/Calculation-of-energy-indicators-in-MJ-LHVs.pdf

Thanks for developing this documentation. This was helpful to our team.

I would have one question though regarding LHV for wood products. The lower heating value of hard wood is around 18.5-19.5 MJ/kg. For softwood it is 13.3 MJ/kg for standing wood. So roughly between 10 and 20 MJ/kg.

 For the flow name, "Wood, soft, US SE, standing/m³", we have 13,16 MJ/. but in 1 m³ there is at least 400 kg of wood => 400x13,16.

From what I have seen, the only value that makes sense to me is the "Wood, soft, INW, standing/m³" with 6235 MJ/m³ (page 19). But to me, it is not possible to have such a difference in values for just different types of wood.

Page 20, we have "Wood, soft, US PNW, standing/m³" 12.38 MJ/m³. which is not 6000.

 Could you please explain to me if I miss something here! 


Thanks in advance!

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answered by (13.3k points)

Hi, "Wood, soft, US SE, standing/m³" should have the unit MJ/kg. We are fixing this! Thanks for keeping you eyes open.

commented by (13.3k points)
the openLCA LCIA method package 1.5.7 and the documentation have been updated.
commented by (240 points)
Wonderful! Thanks Jonas.