[Greenbuilding] firewood moisture content - a question for Norbertperhaps

[Douglas E Lamb]

Mr. Deumling,
 
Due to the particular nature of water when it begins to change state and
condenses it very quickly loses energy when released into the atmosphere.
Like coffee in a ceramic mug. When the coffee condenses into the atmosphere
any heat that is included in the moisture (vapor) quickly dissipates. Hence,
heat gain is null for all practical intense and purposes, The same is true
for any moisture laden item when exposed to heat and released into the
atmosphere.
 
Mr. Corwyn explains the empirical aspects of this claim very neatly.
 
Regards,
Doug Lamb
614.323.2005
douglaslamb at columbus.rr.com
 
 

  _____  

From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of Tim
Vireo Keating
Sent: Monday, December 12, 2011 12:32 PM
To: Green Building
Subject: Re: [Greenbuilding] firewood moisture content - a question for
Norbertperhaps


I'm assuming that the heat 'lost' in the production of the steam is truly
lost for the user only if the steam goes out the flue. If it goes into the
room, wouldn't the steam than give back the heat to the room when the water
vapor cools?

tim keating

At 9:27 AM -0500 12/12/11, Douglas E Lamb wrote:

It produces steam not heat!

Xoix!

 

Regards,

Doug Lamb

614.323.2005

 <mailto:douglaslamb at columbus.rr.com> douglaslamb at columbus.rr.com

 

 


  _____  

From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of Reuben
Deumling
Sent: Sunday, December 11, 2011 9:57 PM
To: Greenbuilding
Subject: [Greenbuilding] firewood moisture content - a question for
Norbertperhaps


Let us say I have a cord of firewood that registers 15% moisture content,
and a cord that registers 20% moisture, and one that registers 25%.

I burn the 15% cord and get XY BTUs/lb out of it.
I burn the 20% cord and almost certainly get fewer BTU/lb out of it, but how
much less usable heat?
And the same for the 25% cord?

Put more succinctly, what is the penalty for having firewood that is not
quite dry?

Thanks.

Reuben


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