[Stoves] air for gazification

[Saibhaskar Nakka]

 Dear Frank, Martin, Jeff and all,


> Frank: We just need to know the 'classification' of the fuel that will
> give us the optimum SV value so we can find other fuels, test them and
> determine if the stove design
> will work with them also.  Or if slight changes need to be made to the
> design.


Regarding the requirement of air, from my experience this factor is more
relevant if the type of biomass used and fuel size is standardized as said
by Frank.

For Magh - I smoke burner stove, I have two combustion chambers made up of
stainless steel. The secondary air holes are of same dimensions and number,
but the primary holes of one combustion chamber are two times larger. Now I
have better choice. I have wood shavings of two grades. When I require good
combustion with fine wood shavings, I prefer to use the combustion chamber
with larger primary holes and and the other chamber for larger wood
shavings. All these things can be better shown through demonstration, rather
than communication in text. I am using pebble stones / multi-fuels in
layers, mixture of different sizes of same fuel, etc. As part of
experimentation and learning because a lay person while using the stoves
knowingly or unknowingly might do such things. Slowing down or increasing
the combustion can also be achieved through the compaction, size and choice
of the biomass used apart from using a regulator to control the speed of
fan.

In all the above experiments when the combustion is very good, controlled,
and desired result (my dish is cooked very well) is achieved, I feel the air
flow in my stove is good and it has supported me. This is only the
perspective of the user.

But we cannot ignore the basic scientific testing of stoves for air flow,
etc., which is a must.

Dr. N. Sai Bhaskar Reddy