[Stoves] another rocket stove issue for discussion

Tue May 6 07:42:52 CDT 2014

Dear Michael

This very day David Beritault and Rowena from YDD and I were discussing this
very point. The liner (which does not have to be a 'Rocket elbow' it could
be any good combustion chamber with good performance, matched to certain
fuels.

My input was that this can be an advanced ceramic product (not metal)
because the performance is so much better and ceramic is cheaper than metal.

What one must remember is that if it were done using a truly advanced
technology, it would not be fragile. Possible shapes are the interesting
fuel holder and grate in the Rocket Works (RocketWorx?) stove which was
shown at the Phnom Penh meeting last year. It has preheated secondary air
injection, a low rate of char production (it burns almost completely) and
low PM. This is a good way to start: with a device that already has good
performance.

Consider other designs that are suited to particular areas, addressing
topics of interest. The stove promoted by Rebecca in the Philippines
addresses a major safety issue with the collapse of ceramic stoves (dropping
a hot pot contents onto the floor). Ceramic stoves are not long-lived
because of material issues and they can fracture suddenly. 

It is my hope that borosilicate glass will be used in mass produced inserts
that you could bring to your region and place inside a locally made
structure. Perhaps it will require 3 parts, not 1. Such a stove could have
sophisticated performance and a high local content.

Regards
Crispin

-----Original Message-----
From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of
Michael N Trevor
Sent: Wednesday, May 07, 2014 10:29 AM
To: Discussion of biomass cooking stoves
Subject: [Stoves] another rocket stove issue for discussion

I believe I may have brought up this issue several years back.

It seems one thing item that is truly needed is a simple inexpensive long
lasting rocket elbow the can be built into anything---- cement and stone
housing plastered cow dung wooden box with ashes galvanized cylinder with
glass wool.
whatever.

Fired ceramic, titanium, stainless steel all come to  mind immediately. A
flat sheet foldable tabbed lockable elbow probably would be small and light
enough for world wide distribution should be feasible. especially if made in
say in India or china.

For organizations  like Green Crescent, Red Cross or Fema  these could be
stored and prepositioned for immediate distribution after major disasters
like earthquakes, tsunamis or typhoons.

I have seen and priced many fine attractive and beautiful stoves from all
around the world. Some of these stoves are as cheap as say $20.00 or $30.00,
then you find out shipping is say 100 200 or 300 dollars.

Welcome back to the 3 stone fire.

Michael N Trevor
Majuro, Marshall Islands
(Near the end of the world) 

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