[Gasification] Gasification Digest, Vol 42, Issue 2

David Coote dccoote at mira.net
Sun Feb 2 13:50:28 CST 2014


My question is aimed at using a solar kiln to dry chip for use in a 
biochar system or gasifier/combustion bioenergy system, Doug. This would 
use material from waste woody biomass streams in regional Australia. 
Likely to be a mix of eucalypt, conifers, acacias and exotics. I don't 
have a feel for the size of electric drive required for a tumbler 
handling perhaps several cubic metres hence my question. And I suspect a 
blower would also be necessary but again I don't have a feel for what 
size of fan would be suitable for this scale. Hence my query.

If you're interested in drying timber in a solar kiln there's a 
reasonable amount of literature I can point you at but that's perhaps a 
bit off-topic for discussion on this list.

Cheers

David

On 3/02/2014 6:00 AM, gasification-request at lists.bioenergylists.org wrote:
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>     1. Re: Size of blower and tumbler required to dry chip in a
>        solar kiln (Doug)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 2 Feb 2014 17:16:18 +1300
> From: Doug<Doug.Williams at orcon.net.nz>
> To: Discussion of biomass pyrolysis and gasification
> 	<gasification at lists.bioenergylists.org>
> Cc: David Coote<dccoote at mira.net>
> Subject: Re: [Gasification] Size of blower and tumbler required to dry
> 	chip in a solar kiln
> Message-ID:<20140202171618.a726898f0dc78fe0885f6547 at orcon.net.nz>
> Content-Type: text/plain; charset=US-ASCII
>
> Hi
> David,
>
> Can you clarify a couple of points please?
>
>    
>> We're looking at several days around 40C in Melbourne this week after a
>> record-breaking period two weeks ago with 4 consecutive days over 41C.
>> Solar kilns can get very hot with this much insolation although this
>> can, of course, be managed with airflow. Managing timber drying in a
>> solar kiln requires some care to reduce checking etc but drying chip
>> would be less sensitive.
>>      
> Are you operating solar kilns in Melbourne or out in the Bush?
> When you say checking, are these splits in the timber, also known as shakes?
> I'm guessing you are drying Eucalyptus timber?
> Are you using solar power at the kilns location?
>
> Once I get my head around the the kiln application, I might be able to offer more comment.
>
> Doug Williams,
> Fluidyne Gasification.
>
>
>
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> End of Gasification Digest, Vol 42, Issue 2
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