Gasifier Calculations: Difference between revisions
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Feasibility of wood vs. charcoal - volume considerations | Feasibility of wood vs. charcoal - volume considerations | ||
*start with a nice graph of energy density of fuels - [http://www.people.hofstra.edu/geotrans/eng/ch8en/conc8en/energycontent.html] | |||
*Wood pellets - 640 kg/cu m [http://www.glrepellets.com/Products.html] | *Wood pellets - 640 kg/cu m [http://www.glrepellets.com/Products.html] | ||
*Volume density of wood chips- 240-520 480 kg/cu m [http://www.simetric.co.uk/si_materials.htm] | *Volume density of wood chips- 240-520 480 kg/cu m [http://www.simetric.co.uk/si_materials.htm] | ||
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*Energy volume density of wood - 14-18 MJ/kg | *Energy volume density of wood - 14-18 MJ/kg | ||
*Energy volume density of charcoal - 30 MJ/kg [http://vuthisa.com/2010/09/05/is-it-better-to-burn-wood-or-charcoal/], [http://www.fao.org/docrep/q1085e/q1085e0c.htm#2.%20charcoal] | *Energy volume density of charcoal - 30 MJ/kg [http://vuthisa.com/2010/09/05/is-it-better-to-burn-wood-or-charcoal/], [http://www.fao.org/docrep/q1085e/q1085e0c.htm#2.%20charcoal] | ||
*gasoline is 45 MJ/kg, or 120 MJ/gal | |||
*1MJ = .3 kWhr -> 1 kG of charcoal has 9 kWhr of energy, tapped at 10% - gets us ~ 1 kWhr of energy. 1 kW hour of energy per .5 - 1 gallon of fuel | *1MJ = .3 kWhr -> 1 kG of charcoal has 9 kWhr of energy, tapped at 10% - gets us ~ 1 kWhr of energy. 1 kW hour of energy per .5 - 1 gallon of fuel | ||
*1 cu yd = 200 gallons, 1 cu m = ? 264 gal | |||
*4kg of charcoal has the same energy as 1 gallon of gas. If engine is deranged for char gas, 1 gallon of gas is 8 kg of charcoal. | |||
*1 gallon of char is about 1 kg of char. | |||
Latest revision as of 20:39, 17 May 2015
Feasibility of wood vs. charcoal - volume considerations
- start with a nice graph of energy density of fuels - [1]
- Wood pellets - 640 kg/cu m [2]
- Volume density of wood chips- 240-520 480 kg/cu m [3]
- Volume density of charcoal - 240-480 kg/cu m [4] ; 208 [5]
- Energy volume density of wood - 14-18 MJ/kg
- Energy volume density of charcoal - 30 MJ/kg [6], [7]
- gasoline is 45 MJ/kg, or 120 MJ/gal
- 1MJ = .3 kWhr -> 1 kG of charcoal has 9 kWhr of energy, tapped at 10% - gets us ~ 1 kWhr of energy. 1 kW hour of energy per .5 - 1 gallon of fuel
- 1 cu yd = 200 gallons, 1 cu m = ? 264 gal
- 4kg of charcoal has the same energy as 1 gallon of gas. If engine is deranged for char gas, 1 gallon of gas is 8 kg of charcoal.
- 1 gallon of char is about 1 kg of char.