Archive for July, 2010

Initial feedback from stove HH test

July 22, 2010

After the household (HH) had tested the stove for one week, they were visited, and the main user was given further advice about the use of the stove. In some cases an individual demonstration was given, with the assistance of the cook as an opportunity to see and find solutions to any problems. Initial opinions of the stoves varied, with some families managing to use the stove well, cook and produce biochar, and others finding it a little more difficult

Feedback (16-17.07.2010):
– Some volunteers using stove had damp wood, and this proved difficult to light and stay lit.
– Generally there has been a variety of wood types used, from foraged wood to processed woods – including old furniture, and some work better than others in the stove
– The stove was not big enough for a cooking pot suitable for very large families. These stoves were not designed for such large tasks, and either a different model selected, or several stoves put under one pot
– Some families were not very interested in putting anything in the outside of the Anila stove, since it worked without, and even produced less smoke without
– In some cases where charcoal was produced, families preferred to let it burn in the stove its self, others put it into a charcoal stove
– Lighting methods vary, including resin, coconut fibre, part of a rubber tyre and dried furniture varnish.
– Differences in the location of the kitchen (in a kitchen shelter, inside a building, in a courtyard, open garden area or raised up on a shelf) all lead to different wind levels, so this varied how well the stove performed. (note: all participants are requested to use the stove in well ventilated areas)
– Improvements to the design were suggested, which will be compiled in the final report

A family testing the TLUD stove

Other versions of the Anila stove…

July 21, 2010

I’ve recently had some communication with the Anila Kenya online group.

One project in Kenya ‘Household lead Research and Development of biomass based pyrolysis stove and testing of the efficacy of char in different ecological zones in Kenya‘ has similar aims to this biochar Innovation project, and part of it has involved the production of an improved design of the Anila stove.

This stove is called the FFUD Upepo, and one of the major differences is the addition of a chimney, and it also has air outlets at the top (as opposed to them being at the bottom).

For more information see:

If anyone knows of a source of the Anila stove in India, please get in touch with

Stove testers finalised 07-08.07.2010

July 21, 2010

The first 9 volunteers from a secondary school class at the Samdek Euv High School, Tuk Vil Commune, Siem Reap were selected to test the stoves. The volunteers were from Krable Riel (3) and Tuk Vil (5) in Pouk District and one volunteer from a village in Kouk Chork Commune near to Siem Reap. The stoves were demonstrated to the students (who all contributed to the cooking in the families) and they were then asked if they would like to take part. They were all interested so the stove was taken to their house. After 3 weeks, the stoves will be randomly re-allocated so each participant has a new stove to try, then after another three weeks the stoves again re-allocated. There is a 3 part questionnaire which has a section to be completed by participant after each stove. The main stove user will be asked to complete the questionnaire.

Initial introduction to stove covered the following points about the stove, which is:
– a prototype, therefore still has room for improvement, and is not yet available
– designed to reduce fuel use
– designed to burn smokelessly
– designed to produce biochar

The demonstration then covered:
– set up and safety of system*
– fuel choice and preparation
– fuel for char production (where necessary)
– how to light (ignition)
– how to keep alight (operation during burn)
– determination of which stage the system is in to conclude burn (combustion / gasification / end of gasification for those which produce wood charcoal)

And discussion also covered an introduction to:
– global warming, and the contribution from biomass burning
– forest loss, and use of resources
– biochar and it’s potential uses

*although stones are recommended by the designer in the anila stove, during testing the stone used turned out to be concrete and began to break down / explode in the stove (the stove was extinguished before any damage was done!!!), so it was suggested that stones were not necessary!

Stove designs finalised before distribution

July 21, 2010

Stove design finalised for testing, the following changes were made to the initial prototypes:

– This design has already been adapted by the Iron Workshop so no amendments were deemed necessary

– Lid was fixed onto the outer sides, so the only way to open is from the bottom
– Legs were lengthened
– Handles added

– handles added
– Stove stand heightened
– handle added on lid

08.07.2010 Final stove designs being demonstrated in Krable Riel

Testing of the Sampanda stove 12.07.2010

July 13, 2010

The Sampanda stove from India was trialled in Cambodia. See bioenergy lists for more information:

Selection of volunteers for stove testing in Cambodia 02.07.2010

July 2, 2010

An adaptation of the Kitchen Performance Test (KPT) will be used. It has been modified to account for the fact that this is not an assessment of a stove implementation project but is a feasibility study for deployment, and assumes the user is not familiar with the stove operation – since it is significantly different to operating a three stone fire for example.

The families will be lent a stove for 3 weeks, and asked to use it at least once every day. This should provide valuable information on the suitability of the stove to this area.

The School at Som Dach Euov, Pouk District was used to select those young people who were interested in their families testing the stove, and the project will then be explained to the main cook in the family who must agree. Criteria for selection were:
– current use of wood for fuel
– have garden / land which could be used for biochar deployment
– reside within Pouk or Siem Reap District
– interest in the project

Students who will be testing the new stove designs 16.07.2010