[Stoves] Controlling wood moisture content for stove testing in a lab

[Frank Shields]

Dear James and stovers,

I have placed biomass samples in a plastic bag with varying amounts of 
water and incubated at 25 deg. for a week plus. Then determined the 
moisture content by calculating. Not sure if an exact moisture content 
can be made to happen with this method. I just plot results vs percent 
moisture and calculate what it would be at the percent moisture I want. 
I would make the bags of biomass of the same size sample I want to use 
because I'm not convinced the moisture gets evenly distributed in the 
sample. So separately I determine a moisture of the lot. Then take a 
known weigh of as-received sample and add the water. Then after a time 
remove the biomass and weigh and calculate the moisture in the biomass. 
Some water stays in the bag.  And use the entire sample for the test.

Regards
Frank










James Robinson wrote:

> Dear all,
>
> Is anyone using a system to control the moisture content of wood (or 
> other fuels) for stove testing in a laboratory?
>
> I was thinking along the lines of a 
> humidity/temperature controlled cabinet with multiple sections to 
> allow for the grading of MC in a variety of samples.
>
> A quick web search turned up a number of systems but none that 
> obviously fit the requirement. A home made system is also a possibility.
>
> Cheers,
>
> James Robinson
>
> SeTAR Centre
> University of Johannesburg
>
>
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