Archive for the ‘household stove testing’ Category

Champion TLUD and EverythingNice in India

August 29, 2010

The stoves were taken to the testing Lab at ARTI’s Rural Development centre, and the initial testing, post construction was undertaken.

The stoves were experimented with, in the case of the EN, more of the holes in the outer chamber were blocked to see if it was possible to reduce the flame. Two out of every three holes were blocked (using mud), however this made the stove more smoky.

Overall the stoves performed well, and charcoal was produced in both stoves.

The picture below shows the flame from the EverythingNice, it is possible to identify individual flames which are emerging as a result of the air stream from the outer holes

The EverythingNice stove, India, August 2010

Champion TLUD stove, India, August 2010

Stove swap

August 2, 2010

The stoves were swapped between the households (30-31.07.2010) who are testing the cook stoves and the questionnaire about their current stove use and feedback on the improved stove given. Feedback varied from stove to stove, but the students all interested to try out the different stoves, having been discussing their relative performance already with each other! Two more stoves, and 6 weeks of testing to go…

Gathering firewood to use in the stoves - old and new! 31.07.2010

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

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!

TLUD distribution 28.04.2010

May 1, 2010

Four of the TLUD were distributed to the cooks at the Pepyride School near Kralahn. Teachers from the school and some staff from Cambodian Rural Development Team (CRDT) were also there to observe. Mong from the Iron Workshop demonstrated their use and explained some of the benefits including fuel efficiency, smoke reduction and charcoal production. Useful feedback on first impressions was collected on the stove, and a discussion will be arranged to gather more information after they have tried out the stoves for 2-3 weeks. This information will help to shape the data collection methods which will be used on all the stoves for the project, and also for general information collection on preferences for technologies, feedstock availability and cooking cultures etc.

28.04.2010 Stove demonstration for Pepyride cooks