Wood

I agree that burning wood and other fuels like that is not what the rural people of the world should be saddled with forever. They need the kind of cooking fuel I have.

But for now, we can really help them have healthier lives and less menial labor. There is no contradiction between helping out now with better wood stoves and knowing that their governments, central and local, must do more as quickly as possible to improve their access to good energy, water, housing and all the rest.

We are happy to bring our stove to the Maasai. We have 100% "sustained adoption" and the attached photo shows why. Yes, someday they will be much better off, we hope, and not need this sort of thing. But for now, to see Rhoda, cooking some beans with her grandchild on her lap, safe and smoke free, is a motivating image that makes us proud and happy.

Bob Lange
Maasai Stoves and Solar

http://www.forstoves.com/what-we-do/maasai-stove/
and http://internationalcollaborative.org/about-us/impact/

ublished on Dec 20, 2013

December 20, 2013

Dear Friends,
A few weeks after Typhoon Bopha (locally Pablo) struck eastern Mindanao in December 2012, I was introduced electronically to a Filipina doing graduate studies in Saskatoon, Saskatchewan, Canada.. This young Filipina was fundraising for her home province of Davao Oriental in Vancouver but I was only able to contact her after she returned to Saskatoon. When she learned about the Eco-Kalan, she lamented at the thought of "so much rice donated to the typhoon victims but nothing to cook it with". Her lament has echoed in my mind ever since and has made me more determined to bring the Eco-Kalan stoves to victims of disasters wherever possible, not by ourselves, but with other organizations that can provide security, reliable transportation, food, drinking water, clothing and building supplies.

The stove was developed by Adrian Padt and Aidan Oosthuysen, and Richard Pocock, and uses a familiar Rocket design surrounded by a wire cage to improve the stove's stability and reduce burns. It's a smart looking stove, it saves women time and energy in gathering firewood, and it has lower emissions than the solutions it is typically replacing.

Lighting instructions:

The Rocket Works Stove, web site http://www.rocketworks.org/

  • The Rockt Works stove is a high efficiency wood burning stove, designed to accommodate multiple fuels when required.
  • It is smokeless after initial combustion, thereby reducing the likelihood of carbon monoxide poisoning and reducing the emission of black carbon particles.
  • The outer cage remains cool to touch even after hours of cooking, due to our innovative design.
  • It is made from high quality, heat resistant stainless steel allowing for years of regular use.
  • It can boil 5 liters of water in 15 minutes using as little as 250g of wood, which is significantly less than traditional cooking methods.
  • Its thermal efficiency is 45%, for the Large Pot High Power, performed by the SeTAR Thermal Efficiency Test.
  • Its emissions are the best in its class.

Basic Specification:

  • Mass: 2.95Kgs
  • Height: 270mm
  • Diameter : 240mm

Lighting instructions in English:

Lighting Cone on the Keren Stove no smoke 1 min after lighting
Anglo Supra Nova Stove
Loading the Anglo Supra Nova Stove
Good Fit for Cone Lighting
Lighting Cone on the Anglo Supra Nova
Handles get hot on lighting cones - make them large

Lighting Cones can help make traditional and charcoal stoves light more efficiently and with less smoke than other lighting methods. For the best detail, download the Masters thesis pdf from Kathleen Lask

From Crispin Pemberton-Pigott's Description:

"The main principle is that there should be enough draft to light the fire rapidly. The lighting cone provides this if it is about 500mm tall."

"The second principle is that the bottom of the cone should sort of cover the lighting fuels so that most air is pulled from below, not from the side."

"The third principle is that if there is a secondary air supply at of just below the top of the fuel, the bottom of the cone should bypass it so that the heat inside the cone is not used to pull air through the secondary air ports. Very few stoves have a secondary air controller."

In the result with good fit: "You can just see on the left that it bypasses the secondary and draws all air from below, through the fuel – in this case charcoal. Peter Coughlin reports it reduces the charcoal ignition time by more than ½. We will quantify the smoke reduction and GERES way independently confirm it at some point – it is about 90%."

Lighting stoves can also be used with traditional fires. In tests lighting damp wood in Suba Island "The speed of ignition and reduction in smoke was dramatic. You can just see the hot air distortion of the picture above the cone – basically no smoke. It is quite a bit cleaner than the fire when lit and the cone removed."
The cone on the 3 stone fire is 125

The Stove in the top example is an Anglo Supra Nova.
"It was developed at YDD during the World Bank/Indonesian Clean Stove Initiative."

"It as an Anglo Supra with preheated secondary air. It can burn wood or charcoal, and it can burn wood pellets in TLUD mode. It can automatically switch from pellet burning TLUD pyrolyser mode to char-burning mode by using a disc of paper on top of the grate."

"The loose piece of clay is a door which can close the primary air without affect the secondary air. It provides a significant level of power control without adding or removing fuel. The heat transfer efficiency burning charcoal (it is nominally a charcoal stove) is about 50%. It Is portable with handles and sells retail for about $5.50."

Kathleen’s investigation is attached.

Regards
Crispin

Reinforced Holey Roket Stove
Holey Roket Stove - Drawing (side)
Holey Roket Stove top view

by Joshua B. Guinto
Specialist, Sustainable Village Technologies

1 The Basic Mechanisms of the Rocket Stove. With the lessons from people like Rok Oblak, Richard Stanley and the Aprovecho Institute the author began learning to build the holey roket stove in his workshop at Daet, Camarines Norte. With sheer perseverance and amidst scarcity, he was able to create several models and delivered skills training to poor people in Camarines Norte, Sorsogon and recently in Bulacan.

2. Among the many feedbacks from the users are the limitation of the holey roket stove in terms of (1) fragility in handling and (2) capacity to receive bigger loads when cooking for bigger occasions and events and for food business. In response, one of the models was picked up for reinforcements.

3. The Innovations as of July 2013

In their presentation at the GACC forum, Paul Means and Chris Lanning take a look at the supply chain problem with using woody biomass as a replacement for charcoal in urban areas, and they propose some ideas for equipment that may overcome those problems, as well as identifying some of the challenges to that approach.

See the full presentation here:
http://www.stoves.bioenergylists.org/files/woody_biomass_supply_chains_-_gacc_forum_2013_r.pdf

Removing Handles
Cutting the Throat Hole
Cutting a Top Hole
Internal Elbow
Sheet Metal Held in place with Vermiculite

Nothing fancy but more on the same theme

M Trevor.

Flip Anderson, Haiti Rocket Stove
Aprovecho StoveTec
Mayon Turbo Rice Husk Stove
BioLite Camp Stove
BioLite Camp Stove in Christa Roth's Demonstration House

(Thanks to Ben Sloan!) the presentations are posted on the ETHOS website: http://www.vrac.iastate.edu/ethos/proceedings2013.html

Save the Date!: ETHOS 2014, it will be at Northwest University in Kirkland, Washington on January 24 - 26, 2014.

Jiko Bomba, load the lower half with pellets
Jiko Bomba Gasifying the Pellets and making char
Jiko Bomba, blue flame showing gasification
Jiko Bomba, lower chamber, where charred pellets can be used for low temperature Cooking

Here is some pictures of the Jiko Bomba casification cookstove.
The first shows the two part of the stove with pellet as fuel in the firebox before fire is lit.
Second show the stove burning.
The third the same, in the end of the gasification.
The forth shows the charcoal stage where the pellets remains as glowing carbon. A pot can be put on top of the bottom part of the stove, there are three supports for that.

Yours
Bjarne Laustsen

Quad 2 Stove

Paul Anderson, Centre for Research in Energy and Energy Conservation (CREEC)

The Centre for Research in Energy and Energy Conservation (CREEC) is a not-for-profit organization which works “to enhance access to modern types of energy through research, training and consultancy”.

The CREEC offers independent stove testing services, and has recently tested the Quad 2 Stove.

For the full test report and method see the pdf:
http://www.stoves.bioenergylists.org/files/quad_2_stove.pdf

The center tested the Quad 2 Stove and found that:
The Quad stove boils 5L of water in 27 minutes. To boil and simmer 5L of water, it uses 636g of dry wood and has an energy use of 11713kJ. It has a thermal efficiency of 42% during the high power phase and 41% during simmering. It has a turndown ratio of 1.4, an indication that the stove’s firepower can be controlled for different cooking regimes. Its fuel use is considered to achieve significant, measurabe health and environmental goals according to the Lima Consensus Tiers of stove ranking.

With regards to safety, the stove scored 77.5% and is rated GOOD and is considered a Substantial Improvement according to the Lima Consensus Tiers of stove ranking.

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