[Stoves] Design challenges for biomass fired appliances.

[Otto Formo]

Dear M. Nurhuda, Nice piece of work!What is the retail price for this type of stove?
The ND gasifier mentioned, has no secondery or primary airflow controls.Just Lit from the Top and it runs smoothly, because of the special construction and the air inlets.
We are not selling, just promoteing a nice piece of work, invented by the Norwegian achitect, Paal Wendelbo, back in late 1980`s and introduced in large numbers (5000 +) in Uganda in mid 1990`s.It was very well spoken of and appreciated by the women and cooks.
Unfortenately there was an issue of fuel supply and set backs due to the fact, that the charcoal business, started threatening the peolpe involved and sabotageing their shops and even homes.
We are now introducing two "modified" types of the ND Peko Pe in Zambia, one "Advanced" with secondary air control in stainless steel and one "Standard" without any airflow control, liknked to production of pellets made out of sawdust, see picture enclosed.
We also used the gasifier in producion of biochar from Corb cobs in Zambia 2011 and had quite positive feedbacks, from both women and smallholder farmers.
We are also promoteing a TEG (Thermo Electric Generator, invented and assembeld in Norway) to power LED and cellphones.Would that be something of your interest for your gasifier as well? 
We wish you good luck in your efforts to assist people for a cleaner and healtier way of cooking and heating.
Kindly Otto

Date: Sun, 14 Apr 2013 07:16:21 +0700
From: mnurhuda at ub.ac.id
To: stoves at lists.bioenergylists.org
Subject: Re: [Stoves] Design challenges for biomass fired appliances.

Dear Stovers,
 
Our ND gasifier stoves have minimum primary air control and currently both
the primary and secondary air controls.
 
Check the attached files.
 
Kind regards
M. Nurhuda
 
> Otto and List:
>
> For others on the list, I think they need to understand that when you say:
>
> " Normally, a ND gasifier have no air controls, doors, ports etc "
>
> this refers to your own versions. Most of the TLUDS I have seen have at
> least primary air control - and Lanny has made some of the best. So I
> would modify your sentence to read:
>
> " Normally, a ND Peko pe gasifier ha s no air controls, doors, ports etc "
>
> Ron
>
> ----- Original Message -----
> From: "Otto Formo" <terra-matricula at hotmail.com>
> To: "Stoves Bioenergylist" <stoves at lists.bioenergylists.org>
> Sent: Saturday, April 13, 2013 12:15:21 PM
> Subject: Re: [Stoves] Design challenges for biomass fired appliances.
>
>
> Dear Lanny,
> Normaly, a ND gasifier have no air controls, doors, ports etc.
>
>
> The only opening is at the top of the fuel chamber and the channels
> between the inner and outer cylinder, which are fixed.
>
>
> Just fill up the inner chamber and lit from the top and everything is just
> NICE.
>
>
> Have a nice weekend.
>
>
> Otto
>
>
>
>
> From: lannych at bellsouth.net
> To: stoves at lists.bioenergylists.org
> Date: Sat, 13 Apr 2013 12:18:48 -0400
> Subject: [Stoves] Design challenges for biomass fired appliances.
>
>
> Design challenges for biomass fired appliances.
> Affordability, functionality, and durability are just a few challenges.
> Another design challenge for stoves is the various openings and how to
> close them.
> Openings and closures are used for, combustion air controls, doors, fuel
> hatches and ports, for ash removal, and for exhaust outlets.
> Openings and closures that are affordable, practical, rugged, durable and
> easy to use could be useful for many different stove designs.
> The stove body is the easy part. It is the openings and closures that can
> be a problem.
> Lanny Henson
>
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