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Author Topic: $ per BTU: oil vs wood  (Read 6380 times)

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Offline rank

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$ per BTU: oil vs wood
« on: January 27, 2018, 09:39:19 AM »
Hello all. At these prices, I think I'm the most expensive in the area but I'm having a hard time feeling bad about it.  Does this sound about right?

1 Bush cord of hickory sells for $400 and has 28,000,000 BTU = $14/million BTU
1 Bush cord of Basswood sells for $200 and has 14,000,000 BTU = $14/million BTU
1 CDN gallon of oil sells for $4.50 and contains 165,000 BTU = $27/million BTU

Offline Grizzly

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Re: $ per BTU: oil vs wood
« Reply #1 on: January 27, 2018, 10:20:45 AM »
I'm trying to calculate our coal costs and I'm running into some info that requires math. But so many zeroes!!

Our coal has 18GJ per tonne (2204lbs)
1btu = 1054.615 joules
1GJ = 1,000,000,000 joules

so each tonne of coal has 17,067,839.93 btu's? Something don't seem right cause that would put my cost at:
$80.00 per tonne / 17,067,839.93 btu's = $0.000004687 per btu or $4.69 per million btu........... something ain't right.

My slab cost are covered by lumber sales but don't burn near as efficiently as logs/firewood do.
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Offline DelawhereJoe

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Re: $ per BTU: oil vs wood
« Reply #2 on: January 27, 2018, 03:35:53 PM »
 I saw 24-28 million  btu's per ton depending on what kind of coal it was. If it was 18 GJ/sec it would come out to 17060708.17 btu/sec.
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Offline Hilltop366

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Re: $ per BTU: oil vs wood
« Reply #3 on: January 27, 2018, 07:46:27 PM »
To get the true cost per million BTU's you have to factor in the efficiency of the heating appliance.


Offline Hilltop366

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Re: $ per BTU: oil vs wood
« Reply #4 on: January 27, 2018, 07:48:08 PM »
There are on line calculators.

Offline submarinesailor

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Re: $ per BTU: oil vs wood
« Reply #5 on: January 27, 2018, 09:49:38 PM »
During Energy Management training both @ NCSU and with the Association Of Energy Engineers, we were taught to use 138,950 per gallon of #2.  In addition to that, all the calculations I did while at the Defense Energy Support Center, we used the same number or 7.19 gallons per MMBTU/DTH/million BTUs.

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Offline Kwill

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Re: $ per BTU: oil vs wood
« Reply #6 on: January 29, 2018, 08:29:48 PM »
What is a bush cord?
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Offline starmac

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Re: $ per BTU: oil vs wood
« Reply #7 on: January 29, 2018, 10:18:19 PM »
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Offline Kwill

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Re: $ per BTU: oil vs wood
« Reply #8 on: January 29, 2018, 10:48:51 PM »
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Offline rank

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Re: $ per BTU: oil vs wood
« Reply #9 on: January 30, 2018, 12:03:21 AM »
What is a bush cord?
Is this sarcasm?

Online rjwoelk

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Re: $ per BTU: oil vs wood
« Reply #10 on: January 30, 2018, 02:10:25 AM »
Is there a difference between a bush cord and just a cord?
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Offline LeeB

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Re: $ per BTU: oil vs wood
« Reply #11 on: January 30, 2018, 05:52:33 AM »
I'll join the ranks. I never heard of a bush cord either.
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Offline Roxie

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Re: $ per BTU: oil vs wood
« Reply #12 on: January 30, 2018, 07:04:57 AM »
From Wikipedia:  In the United States and Canada, firewood is usually sold by the full cord, face cord or bag.

    A full cord or bush cord has a volume of 128 cubic feet (3.6 m3), including wood, bark, and air space in a neatly stacked pile.[11] The actual wood volume of a cord may be in the range of 80 to 100 cubic feet (2.3 to 2.8 m3) as stacked wood takes up more space than a piece of solid wood. The most common firewood piece length is 16 inches (41 cm).[12]
    A face cord is one third of a full or bush cord stack of wood that is 4 by 8 ft (1.22 by 2.44 m) by 16 in (41 cm) and has a volume of 42.6 cubic feet (1.21 m3).[12]
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Offline Woodcutter_Mo

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Re: $ per BTU: oil vs wood
« Reply #13 on: January 30, 2018, 07:17:57 AM »
 I had never heard of a bush cord either, or atleast not locally. Learned something new.
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Offline Blue Noser

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Re: $ per BTU: oil vs wood
« Reply #14 on: January 30, 2018, 07:20:34 AM »
What is a bush cord?

You too huh.
yeah that's a new one on me.

This is why I like the metric system. Cubic meters are so much easier on the head  :D

That being said, I have never seen firewood sold by the cubic meter (stacked) in my part of Canada. It is always done by the cord, as that is what the vast majority of people know and are familiar with.

We also have issues with variants of the definition of a "cord". A cord is 128 cubic feet of wood, bark, and air. That is the only measurement which is approved for use in terms of firewood sales.

Offline Roxie

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Re: $ per BTU: oil vs wood
« Reply #15 on: January 30, 2018, 07:30:29 AM »
If you use the forum search you can find 3 pages of threads where bush cord is used.  Google is your friend.   :P
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Offline Kwill

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Re: $ per BTU: oil vs wood
« Reply #16 on: January 30, 2018, 11:24:16 PM »
What is a bush cord?
Is this sarcasm?
no sir. Never heard of a bush cord. Around these parts wood gets sold by the rank ( cut 16-18 inch long stacked 4ft high by 8ft long) or by the cord which is 3 ranks or 4 ft high 4ftwide and 8ft long.
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Offline thecfarm

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Re: $ per BTU: oil vs wood
« Reply #17 on: January 31, 2018, 06:06:52 AM »
Bush cord is new to me. But the worst part is I have read posts that it was in.
I don't feel all that bad,Tom did not know either.
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Offline square1

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Re: $ per BTU: oil vs wood
« Reply #18 on: January 31, 2018, 06:13:04 AM »
Based on the BTU & cost I assumed it was a federal / standard / full cord.

Offline rank

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Re: $ per BTU: oil vs wood
« Reply #19 on: January 31, 2018, 06:56:11 AM »
Lots of first time firewood buyers here that only want a face cord.  Not only is it best to specify bush, itís best to specify how many cu ft in your definition of face


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