Quizzes & Puzzles7 mins ago
Willow as a Biofuel
4 Answers
Obviously it works, but on the face of it, even on extensive 'farms', the rate of growth seems inadequate to produce enough material to make it worthwhile compared with say coal which is mined by the thousands of tons.
Does willow burn more slowly, give off greater heat?
A few words pf explanation wouild be welcome.
Does willow burn more slowly, give off greater heat?
A few words pf explanation wouild be welcome.
Answers
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For more on marking an answer as the "Best Answer", please visit our FAQ.Wood pellets are 13.5 Million BTUs per tonne 46% less than coal.
Drax power station uses about 3 million tonnes of coal a year
so that's nearly 5 million tonnes of wood a year.
You can produce 2-12 Tonnes of fuel per hectare per year be generous say 10 that's 300,000 Hectares.
The problems are drying that amount and the fact that it's a very low value crop with coal at �30 a tonne that's �192 a hectare delivered to the powerstation
with wheat at say �100 per tonne with say 6 Tonne per ha
see:
http://www.blt.bmlf.gv.at/vero/veroeff/0345_Pr oduction_of_willow_e.pdf
and
http://www.nfuonline.com/x9763.xml
Drax power station uses about 3 million tonnes of coal a year
so that's nearly 5 million tonnes of wood a year.
You can produce 2-12 Tonnes of fuel per hectare per year be generous say 10 that's 300,000 Hectares.
The problems are drying that amount and the fact that it's a very low value crop with coal at �30 a tonne that's �192 a hectare delivered to the powerstation
with wheat at say �100 per tonne with say 6 Tonne per ha
see:
http://www.blt.bmlf.gv.at/vero/veroeff/0345_Pr oduction_of_willow_e.pdf
and
http://www.nfuonline.com/x9763.xml
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