Metal

World Stove Corp, Italy
October, 2009

LuciaStove for Developing Nations
Lucia Stove

The Lucia is a top filled batch driven stove with a fan, intended for sale to set up micro industry in rural communities, it comes with support that for tailoring the stove to the diet of the people in that community, as well as help setting up a micro plant to manufacture stove parts, and additional stoves.

There is also a Fan free version:

The Biucci is a large institutional stove:

More information is on the World Stove web site: http://worldstove.com/

I’ve been following a couple of different groups and discussions to learn about biochar for about 6 months. Id like to share what I’ve been learning and ask a couple of questions.

Paul Anderson, 2009 SeaChar Stoves Workshop

The efforts at SeaChar (Seattle Biochar Initiative) produced a 5-gallon (22-liter) TLUD.

"On Saturday, August 1, Seachar hosted Dr. Paul Anderson (Dr. TLUD) for an all-day workshop in the construction of Top-Lit Up Draft (TLUD) cookstoves. The stoves can quickly be constructed from commonly available materials, and produce charcoal while providing heat for cooking (or other uses). Paul’s TLUD stoves have been tested and shown to produce very low emissions of CO and particulates. The stoves can provide benefits wherever people rely on biomass for cooking. TLUD stoves use a wide variety of small pieces of biomass for fuel. The clean burn greatly improves indoor air quality compared with open burning and many other types of stoves. In addition, the charcoal can be used as biochar to improve soil fertility, sequester carbon, and potentially provide a source of income through carbon credits."

For More See: http://seachar.org/wordpress/?p=176

The focus was for making biochar, but this size of TLUD will be highly appropriate of institutional-size cookstoves in the developing countries.

Design and Development of a Natural Draft Biomass Gasifier
R. Krishna Kumar February 28, 2009

Natural Draft Gasifier - Kumar

N D G - BASICS & PRINCIPLES

• Operates under the principlle of “ Chimney Effectt ”
• Natural draft caused by density difference

UNIQUE FEATURES COMPARED TO CONVENTIONAL SYSTEMS

• No blower is required for the operation
• Automatically takes the required quantity of air for Gasification
• Convey the Producer Gas formed by Gasification - Naturally
• Reduced fuel consumption compared to traditional chulas

More detail, schematic pictures and testing information are in the attached pdfs and in the 2004 discussion:
http://www.repp.org/discussiongroups/resources/stoves/kumar/ndg.htm

This is the prototype of Magh series "Magh Utham Woodgas Burner". http://e-maghutham.blogspot.com/ This is a natural draft burner (forced air is optional). Low cost, low weight, easy of operation, easy to collect the biochar by rotating the combustion frame and easy to reload it. As it is can be used for boilers / institutional stoves / domestic cooking / etc. The performance is good. There could be some more improvements in its design to increase its performance. For details and photographs see the link http://e-maghutham.blogspot.com/ . The term "Utham" refers to "Best" which is part of the name of Prof. K. Purushotham Reddy a very well known environmentalist in India.

Magh CM-II http://e-maghcm-ii.blogspot.com/ natural draft woodgas stove http://e-maghcm-ii.blogspot.com/, it is a very low-cost stove for heating and generating charcoal. It can also be described as a mini-charcoal making metal kiln. Instead of incinerating biomass generated from home gardens / any other dry combustible material generated as household waste usually throw into the garbage bins, can be used here. The leaf litter, dry twigs / sticks, chips of wood, wood shavings, etc., are very much suitable.

Cookstove System Save80
LUSAKA SUSTAINABLE ENERGY PROJECT and COOK STOVE PROJECT KUPANG
Climate Interchange AG,Garching/Munich, Germany, July 2008
Cookstove Save80

MJA Biomass Gas Stove
Alexis Belonio, July 23, 2008
MJA Biomass Gas Stove Burning Coal

Alexis Belonio writes (edited and annotated by Paul Anderson and Tom Miles):

Attached is a picture of my latest coal gasifier stove. This
is the same basic TLUD stove I have for wood charcoal and wood chunks.

For domestic use, I use carbonized coal (or coke) as fuel instead
of the raw coal. Coal can be used for the stove, but we don't want to promote
this as a fuel since it emits poisonous gas. I would prefer to use coal for
industry application where gas can be cleaned before it is released to the
atmosphere.

I provide only a small amount of coal fuel in the gasifier stove, enough
for cooking. This mean that the power output is only small and the
metal I use is a stainless steel.

I ignite the carbonized coal by using a wood charcoal that has been soaked in
kerosene as igniter. [This is a TLUD stove, so ignition is at the top.]

[In the Belonio TLUDs, the fan only blows the primary air. The
secondary air is
pre-heated as it rises naturally between the fuel cylinder and the outer
cylinder, finally exiting into the rising flow of combustible gases.]
The smoke in the coal gasifier I have was eliminated [combusted] by mixing
preheated air with the gas generated from the reactor. I think
there is no need of [forced] mixing the secondary air by creating turbulence
with the combustible gases. Because in that case, you will need a
slightly bigger fan with enough pressure to push the air.
MJ Biomass Gas Stove

Alexis Belonio
atbelonio@yahoo.com

Coconut fiber Stove, Biomass Shredder and Pelletizer

Alexis Belonio, University of the Phillipines, May, 2008

Cocopeat Pelletizer

Delta State Pilot Study Final Report, Selected Photos (attached pdf)

Jim Murren, Project Gaia, April 2008

Providing Users’ Responses to the Methanol-fueled CleanCook Stove during Project Gaia’s 2007 Pilot Study in Delta State, Nigeria

User Feedback - Clean Cook Stove