Dear Ron
----- Original Message -----
From: [email protected]
To: Discussion of biomass cooking stoves ; Frank Shields
Sent: Tuesday, May 07, 2013 5:57 PM
Subject: Re: [Stoves] Charcoal as space filler in TLUD reactors
Frank and list:
Need to bring in one more variable: fuel shape. Imagine the fuel is
pencil shaped. If placed vertically, they work fine to make char. If
horizontal and parallel, they can block most vertical air flow. Anyone able to
supply biomass fuel spheres?
# What diameter do you want? What material? Do you have a complete
specification? How many tonnes do you want? How much are you willing to pay per
tonne?
Kevin
Ron
------------------------------------------------------------------------------
From: "Frank Shields" <[email protected]>
To: "Discussion of biomass cooking stoves" <[email protected]>
Sent: Tuesday, May 7, 2013 2:46:13 PM
Subject: Re: [Stoves] Charcoal as space filler in TLUD reactors
Dear Martin,
I often determine the particle density here in the lab using free flowing
sand. If the particle density of the fuel is determined (g/cc) and you know
the weight of fuel packed in a known volume you know the volume of voids and
can determine the air speed - I am thinking.
Frank
-----Original Message-----
From: Stoves [mailto:[email protected]] On Behalf Of
[email protected]
Sent: Tuesday, May 07, 2013 1:26 PM
To: Discussion of biomass cooking stoves
Subject: Re: [Stoves] Charcoal as space filler in TLUD reactors
[Default] On Tue, 7 May 2013 09:22:19 +0200,"Boll, Martin Dr."
<[email protected]> wrote:
>You have to calculate the free space in order to get the real air-speed in
this area.
>I think even if that is naturally not the true surface-speed on the fuel,
it is a good number to deal with.
I think in gasification they use the term "superficial velocity" a fictional
speed derived from the air volume and cross section of the chamber, the
actual speed of any given bit of air flow through the spaces will be much
higher of course.
AJH
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