[Stoves] Fuelwood moisture and wood stove

[Otto Formo]

Dear Sarbagya and all,
In Norway, we also (should) know about the moisture factor in the firewood, but people tend to be different, here as elswhere.
Some care, some dont care, some try, others dont "know".

During the cold winter months in Norway, you can, standing by a fireplace, actually "feel", if the firewood is well treated - DRY, or not.
If the moisture content is too high, above 20%, most part of the energy content in the wood goes to evaporate the water, which again produce a lot of char and creosot to clog your chimney.
(Some people are allways troubled by fires in their chimneys, some are not affected at all, strange...........?) 
It is a well known "quote" that: 
firewood with high moisture content last longer, but in a heating perspective it is a total waste of energy.
For cooking, you will not need the high temperature as for heating a room with outside temperature of -25C, of cource, and act accordingly.

But we should never give up the efforts to teach people about the importance of DRY fuel, otherwise I think we are dumed to fail.

I have "never" heard about stoves. which can burn wet wood cleanly, apart from boilers, may be.

Otto
Forester and still a gasifier fan.........without a fan




> From: Sarbagya Tuladhar [sarbagya007 at gmail.com]
> Sent: 2012-02-10 06:00:18 CET
> To: Discussion of biomass cooking stoves [stoves at lists.bioenergylists.org]
> Cc: rajan_jiby at dataone.in, Discussion of biomass cooking stoves [stoves at lists.bioenergylists.org]
> Subject: Re: [Stoves] Fuelwood moisture and wood stove
> 
> Fuelwood storage is inside the kitchen area in Nepal thereby drying the wood whilst lighting fire for the cook stove...ppl even have small batches of Fuelwood placed really close to the cookstove...the moisture factor in the Fuelwood seems to be a well understood fact in Nepal...
> 
> Sarbagya 
> 
> Sent from my iPhone
> 
> On 10/02/2012, at 3:45 PM, CHRISTA ROTH <stoves at foodandfuel.info> wrote:
> 
> > not only traders: in areas where deamnd surpasses supply of  somewhat dry deadwood for collection, people cut fresh branches or log entire trees to take home for immediate use as firewood.  I have measured more than once moisture contents exceeding 50% (own experiences in Malawi and Madagascar ).
> > 
> > 
> > Am 10.02.2012 um 02:23 schrieb rajan_jiby at dataone.in:
> > 
> >> Dear Madam,
> >> 
> >>> 
> >>> Message: 7
> >>> Date: Thu, 9 Feb 2012 13:09:35 +0000
> >>> From: CHRISTA ROTH <stoves at foodandfuel.info>
> >>> To: Discussion of biomass cooking stoves
> >>> <stoves at lists.bioenergylists.org>
> >>> Subject: Re: [Stoves] Grates and chimneys
> >>> Message-ID: <0EB10880-6780-4EF9-B358-5C152411C2CF at foodandfuel.info>
> >>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed; delsp=yes
> >>> 
> >>> Xavier, you get the best stove and chimney clogged up quickly if you
> >>> use wet wood/fuel. many users in developing countries  collect their
> >>> fuel in short-term intervals (daily/weekly) and dont' build up a fuel
> >>> stock-pile, so the fuel has little chance to dry.
> >>> wet seasons in tropical climates don't help either to get or keep fuel
> >>> dry.
> >> 
> >> 
> >> A good/important point well stated.
> >> 
> >> Moisture content of firewood is a crical factor in a wood stove.
> >> 
> >> Sometimes traders like to push the wet wood through  -  for obvious reasons.
> >> 
> >> 
> >> Regards,
> >> 
> >> Rajan
> >> 
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