Embodied Energy of Wood: Difference between revisions
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(Created page with "Embodied energy of lumber - 8.5MJ/kg. Note that diesel has 36 MJ/kg. Thus - each kg of lumber contains about 250 grams of diesel! Each wall panel of the Seed Eco-Home weighs...") |
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Note that diesel has 36 MJ/kg. Thus - each kg of lumber contains about 250 grams of diesel! | Note that diesel has 36 MJ/kg. Thus - each kg of lumber contains about 250 grams of diesel! | ||
Each wall panel of the Seed Eco-Home weighs roughly 110 lb = 4*13lb for studs - and a sheet of ply 60 lb - 3/4 total or about 1/2+3/8. Thus we have 110 or so lb. This is | Each wall panel of the Seed Eco-Home weighs roughly 110 lb = 4*13lb for studs - and a sheet of ply 60 lb - 3/4 total or about 1/2+3/8. Thus we have 110 or so lb. This is about 12 kg of diesel! Entire house walls thus have 576 gallons of diesel! | ||
Compare to CEBs - 1 gallon per hour - or 6*60=360 block per hour. Each 1' thick 4x8 foot wall section has 192 block or 1/2 gallon of diesel. | Compare to CEBs - 1 gallon per hour - or 6*60=360 block per hour. Each 1' thick 4x8 foot wall section has 192 block or 1/2 gallon of diesel. 48 sections for SEH 1000 sf model thus have 24 gallons of fuel. | ||
Revision as of 21:09, 24 December 2021
Embodied energy of lumber - 8.5MJ/kg.
Note that diesel has 36 MJ/kg. Thus - each kg of lumber contains about 250 grams of diesel!
Each wall panel of the Seed Eco-Home weighs roughly 110 lb = 4*13lb for studs - and a sheet of ply 60 lb - 3/4 total or about 1/2+3/8. Thus we have 110 or so lb. This is about 12 kg of diesel! Entire house walls thus have 576 gallons of diesel!
Compare to CEBs - 1 gallon per hour - or 6*60=360 block per hour. Each 1' thick 4x8 foot wall section has 192 block or 1/2 gallon of diesel. 48 sections for SEH 1000 sf model thus have 24 gallons of fuel.