[Stoves] Aprovecho Dung Stove Report

[Kevin Chisholm]

Dear Jeff

A ton of wet hardwood has about as much water in it as wood. Thats a lotta 
water.

As an extreme example, you cannot take in one stick of wood from outside and 
have it dry before the last stick is burned out. You would have to a "drying 
zone" that had wood stored for some significant time. For example, you might 
need to have 10 times the volume of wood undergoing the drying process as 
you burn per hour.

Obviously, there are a lot of variables here... wood moisture content, size, 
airflow across the wood, etc.

Some people (usually differentiable on the basis of sex) dislike a wood 
stack in the kitchen, because it is messy and unkempt looking. The Gender 
Preference is that wood be stored outside. :-)

An important health benefit to "inside drying" is the moisture liberated to 
the living space. The most healthy Relative Humidity range is 40% to 60%. In 
cold climates, the inside RH is usually too low, except in tightly built 
homes.

Best wishes,

Kevin
----- Original Message ----- 
From: "Jeff Davis" <jeff0124 at velocity.net>
To: "Discussion of biomass cooking stoves" <stoves at listserv.repp.org>
Sent: Wednesday, November 29, 2006 10:43 PM
Subject: Re: [Stoves] Aprovecho Dung Stove Report


> Dear Mark,
>
>
> Mark wrote:
>>That's part of what makes
>> designing wood stoves here in India during monsoon such a challenge!
>
>
> I have the same problem burning wet pine in my heathut. The only thing
> that saved me was using the heathut to dry the wood.
>
> Would it also be possible to design a cooking stove with a built in dryer?
> It would dry the next batch of fuel from some waste heat.
>
> OR at the end of cooking, would it be possible to have a special pot, to
> dry the next batch from the remaining fuel (if any)?
>
>
>
> Happy stoking,
>
>
> Jeff
>
>
>
>
> -- 
> Jeff Davis
>
> Some where 20 miles south of Lake Erie, USA
>
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