[Stoves] Equipment required for testing stoves

[Frank Shields]

Dear Elisha,

This might work. Suggest replacing dirt with  #20 mesh sand. Easy to get
(used in mortar) and easy to separate from ash fines and larger material due
to being all the same size and no organic fraction. 

Thanks

frank  

-----Original Message-----
From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of
Elisha Moore-Delate
Sent: Tuesday, December 04, 2012 1:05 PM
To: Discussion of biomass cooking stoves; crispinpigott at gmail.com;
Discussion of biomass cooking stoves
Subject: Re: [Stoves] Equipment required for testing stoves

Hi Frank and Crispin,

 

Why don't you all use a bit of dirt? In the lab you can have 1 metal bucket
1/2 full of dirt and 1 empty bucket/pot or another one half full of dirt and
a sieve. You throw the fuel in one bucket, smother it with dirt from other
and then use the sieve (screen) to remove the dirt from the fuel, having the
dirt fall into the empty bucket...you may need some plastic sheeting or
something to catch the dir and asht that falls outside but it should give
you a better quality fuel then water soaked fuel.

 

Thanks,

 

Elisha 


________________________________

From: Stoves on behalf of Frank Shields
Sent: Tue 12/4/2012 3:20 PM
To: crispinpigott at gmail.com; 'Discussion of biomass cooking stoves'
Subject: Re: [Stoves] Equipment required for testing stoves



Hi Crispin,

Weighing the fuel when removed (hot and burning) and dry weight after
soaking with water, draining (screen) and drying is not a convenient
procedure to determine moisture left -and prone to error - but only method I
can think of at the moment.
Water puts out a fire by taking away its heat. So wondering if there is
another method that could be used? Combination nitrogen gas and pieces of
steel in a tumbler? Must be some way besides water.

Frank


Frank Shields
Control Laboratories, Inc.
42 Hangar Way
Watsonville, CA  95076
(831) 724-5422 tel
(831) 724-3188 fax
www.biocharlab.com








-----Original Message-----
From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of
Crispin Pemberton-Pigott
Sent: Tuesday, December 04, 2012 11:26 AM
To: Stoves
Subject: Re: [Stoves] Equipment required for testing stoves

Dear Frank

You are on the right track, in my view. The assumed energy for the wood and
char is a major source of imprecision in the test.

As for quenching with water: unfortunately we need to know the residual
moisture content of the fuel 'as removed'. That varies a lot depending on
the stove type. Quenching it with nitrogen is an alternative.

Regards
Crispin
-----Original Message-----
From: "Frank Shields" <frank at compostlab.com>
Sender: "Stoves" <stoves-bounces at lists.bioenergylists.org>
Date: Tue, 4 Dec 2012 10:19:39
To: 'Discussion of biomass cooking stoves'<stoves at lists.bioenergylists.org>
Reply-To: Discussion of biomass cooking stoves
        <stoves at lists.bioenergylists.org>
Subject: [Stoves] Equipment required for testing stoves

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