One Cord of Wood
Yields ....
·
7,500 toothpicks; or,
· 1,000 to 2,000 pounds of
paper (depending on the process); or,
· 942 one-pound books; or,
· 61,370 No. 10 envelopes
(standard size); or,
· 4,384,000
commemorative-size postage stamps; or,
· 460,000 personal checks;
or,
· 89,870 sheets of
letterhead bond paper(81/2X11); or
· 1,200 copies of the
National Geographic; or,
· 30 Boston rockers; or,
· 12 dining room tables
(each table seats eight)
A cord of air dried, dense hardwood (oak, hickory, etc.) weighs about 2
tons (4,000 pounds) of which 15 to 20 percent is water, and which has the
heating value of a ton of coal or 200 gallons of fuel oil.
How Many Trees To Make A Cord?
D.B.H. (inches) Number of Trees
2 170
4 50
6 38
8 27
10 15
12 3.3
14 3
16 2.2
18 1.9
20 1.6
22 1.3
Enough firewood is used each year in the United States to build a 100 foot
tall wall of wood that could stretch from New York City to San Francisco.
Selected Wood Energy Conversion Factors
1
cord of wood (128 cubic feet stacked volume) = 1 dry ton
1 dry
ton of wood (0% moisture) =
18 million BTU
1 green ton of wood (50% moisture) =
8 million BTU
1 solid cubic foot of wood =
34 dry pounds
1
ton of wood yields
70 to 120 gallons of ethanol
1 gallon of ethanol =
76,200 to 84,300 BTU
1 ton of wood yields
120 gallons of methanol
1 gallon of methanol =
55,700 to 63,500 BTU