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SG-W:/ Fw: [energyresources] Biomass Energy Potential Calculator



           I opened this, printed it out, and found no virus. The attachment contains good info about biomass energy, US geography, and should be useful to thinkers. Like the author, I am doubtful that we could ever get 40% of present energy from biomass. However with large plantings we could get more than 10% and that could be crucial to the survival of our children. With diverse and fruit crops, nature would be reinforced. Biomass stores carbon, makes food, makes  liquid fuels, and makes energy  when the sun doesn't shine and the wind doesn't blow.
                                                                         Kermit Schlansker
-----Original Message-----
From: K Davies <kdavies@igc.org>
To: ER <energyresources@yahoogroups.com>
Date: Saturday, April 20, 2002 7:10 AM
Subject: [energyresources] Biomass Energy Potential Calculator

Let's see if this HTM version of the spreadsheet attaches OK

--
KD
42n20,72w39


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Biomass Energy Potential Calculator: USA
Fantasy No Meat*
Percent of Percent of
Category Percent Sq Km Hectares DryT/Ha/Yr DryT/Yr MMBtu/DryT QuadBtu/Yr Current Use Current Use
Arable 19% 1,740,202 174,020,240 8 1,392,161,920 14 19 20% 14%
Pasture 25% 2,289,740 228,974,000 4 915,896,000 14 13 13% 13%
Forest 30% 2,747,688 274,768,800 2 549,537,600 14 8 8% 0%
Other 26% 2,381,330 238,132,960 0 0 14 0 0% 0%
Total 100% 9,158,960 915,896,000 2,857,595,520 40 40% 27%
References:
United States of America - Energy
http://www.eia.doe.gov/emeu/cabs/usa.html
Total Energy Consumption (2000E):
98.8 quadrillion Btu (25% of world total energy consumption)
Current Shares of U.S. Energy Consumption
http://starfire.ne.uiuc.edu/ne201/course/topics/resource_usage/current_shares.html
1994 U.S. Energy Use By Source
Source Consumption in Quads
Oil 31.00 35%
Natural Gas 24.00 27%
Coal 20.00 23%
Nuclear 7.00 8%
Hydroelectric 2.50 3%
Wood Waste 1.50 2%
Biofuels 1.30 1%
Geothermal 0.20 0%
Solar 0.07 0%
Wind 0.04 0%
Total 88.50 100%
United States - Geography
http://www.cia.gov/cia/publications/factbook/geos/us.html
Area:
total:  9,629,091 sq km
land:  9,158,960 sq km
water:  470,131 sq km
Land use:
arable land:  19%
permanent crops:  0%
permanent pastures:  25%
forests and woodland:  30%
other:  26% (1993 est.)
[1 sq km = 100 hectares]
Popular Poplars: Trees for many purposes
http://bioenergy.ornl.gov/misc/poplars.html
Hybrid poplars, when grown under short-rotation silviculture, can produce between 4 and 10 dry tons of wood per acre per year
(8-22 metric tonnes per hectare per year)...This compares to yields of less than 1 ton/ac/yr for native forests and 2.5 ton/ac/yr
for managed pine plantations.
Bioenergy Conversion Factors
http://bioenergy.ornl.gov/papers/misc/energy_conv.html
1.0 metric tonne (tonne) = 1000 kilograms = 2205 pounds
Energy content of wood fuel (air dry, 20% moisture) = about...6,400 Btu/lb
Realities For The 90s
Environmental and Nutritional Facts drawn from Diet for a New America by John Robbins and other sources
http://home.earthlink.net/~tilleyrw/realities_90s.html
Amount of soy grown in United States consumed by livestock: 90% (2)
Amount of corn grow in United States consumed by livestock: 80% (3)
Amount of total U.S. grain production consumed by livestock: 70% (5)
* "No Meat" scenario assumes 70% of crop land can be converted from production for livestock to biomass production,
all pasture land can be converted to biomass production, and all forest land stays in forestry (timber/wood/pulp)
production.  This is probably a fantasy too.  But it still might be a good idea to buy soy burger stock while it's cheap.