Don't know if this table will come thru semi-intact in plain text format.
If not, it can be found at
http://www.esf.edu/willow/news2/n2why.htm
Species
Density
Heat Value
lb/cu. ft.
lb/cord
BTU/lb
Million BTUs/ton
Million BTUs/cord
Willow
23.7
3,034
8,400
16.8
25.2
Sugar Maple
39.1
5,005
8,400
16.8
42.0
Red Maple
34.3
4,390
8,400
16.8
36.9
American Beach
39.1
5,005
8,600
17.2
43.0
Eastern Cottonwood
25.9
3,315
8,800
17.2
29.2
Red Oak
39.8
5,094
9,360
18.6
47.6
* all values are based on oven dry weight
One Full Cord = 128 cubic feet
Willow Yields 5-8 tons / acre, non-irrigated
Coal yields 20,974,000 BTUs / short ton
One acre = 208.71' x 208.71'
Using the same conversion rate for willow as exists for coal, 10,452 Btu's /
KwH, one mean acre of willow yields 10,447 KwH's.
One acre, 209' x 209', is sufficient to supply ~1.19 homes consuming 1Kw each
hour for an entire year.
Todd Swearingen
----- Original Message -----
From: Harmon Seaver
To: biofuel@yahoogroups.com
Sent: Monday, February 25, 2002 10:01 AM
Subject: Re: [biofuel] Re: Cornburning Stoves
Pellets, according to the figures on www.premiumpellet.com are 40.6
lb @ cubic foot, whereas a lot of hardwoods are denser, some oaks over
50-60 lb @ cubic foot. Pellets are definitely densified, but often are
made from aspen or softwoods. Pellets offer a lot of advantages, such as
convenience, cleanliness, and a very controlled, constant rate of burn,
no creosote, etc., but I don't think you can say they have more energy
content than, say, oak or hickory.
harley94xl wrote:
>--- In [EMAIL PROTECTED], MH <[EMAIL PROTECTED]> wrote:
>
>>I'm of the understanding that pressurized wood pellets are
>>
>approximately twice
>
>>as dense. So the energy content would be approx. twice as
>>
>much ??? And require
>
>>about half as much storage volume then cord wood. Corrections are
>>
>welcomed.
>
>If you burn hard woods, for example Oak, it takes 0.7 cords of wood
>to make 18,000,000 BTU's. If you burn a premium wood pellet with
>less than 1% ash, it takes about 1 ton of pellets to make 18,000,000
>BTU's of output. 1 ton of wood pellets fit on a skid about 6' by 6'
>cube. Compare that to how much a ² cord of wood piled up would
>take. The information is compiled from 2 internet sources.
>
>http://www.cornburner.com/BM620-9.html
>
Some of the cost figures here are not very accurate, or at least
not accurate for all areas. Most charts give $150 @ full cord of wood
(which is correct hereabouts anyway) not $115. And I've seen $1.73 @
bushel for corn, not sure about the others.
>
>and
>http://www.premiumpellet.com/pellet_analysis.htm
>
>If anyone is interested in the chart I devised, I can sent it up to
>an internet website for people to look at and examine themselves.
>
>
>Jeremy
>
>
>
>
--
Harmon Seaver
CyberShamanix
http://www.cybershamanix.com
Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html
Please do NOT send "unsubscribe" messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED]
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Non-text portions of this message have been removed]
------------------------ Yahoo! Groups Sponsor ---------------------~-->
Buy Stock for $4.
No Minimums.
FREE Money 2002.
http://us.click.yahoo.com/BgmYkB/VovDAA/ySSFAA/FGYolB/TM
---------------------------------------------------------------------~->
Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html
Please do NOT send "unsubscribe" messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED]
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
