February 2011

Field testing the POCA/Maputo Ceramic Stove (MCS) and traditional metal stoves (TMS)

24 February 2011 - 3:04pm

The results of field testing the POCA/Maputo Ceramic Stove (MCS) and traditional metal stoves (TMS) using an uncontrolled cooking test (UCT) are attached. In a UCT people cook whatever they want and we watch carefully. The results have fuel-moisture compensated values. The charcoal was almost always hardwood lumps. Larger meals tend to be watery and small meals tend to be frying something in oil.

The comparison indicates a clear change in relative performance with meal size. The bigger the meal, the more the savings with the improved stove. There is also a chart attached showing the increase in thermal efficiency with meal size.

The meal size on one the X-axis.

The WBT locates one point on the line. Performing the test seven times locates that point very accurately but is it difficult to know where the line goes from that point.

No ‘outliers’ were removed in this analysis even when they were obvious. The meal size varies with the season so the question about consumption has more than one answer.

Regards
Crispin
Air Jordan

Africa

Maputo Ceramic Stove

Heating Value

Maputo Cooking Efficienty Rises with Meal Size

24 February 2011 - 3:01pm

The meal size on one the X-axis.

Fuel Consumbpion with a traditional metal stove and a Maputo Ceramic Stove

24 February 2011 - 2:59pm

Kerosene Lantern Stoves

24 February 2011 - 2:49pm

Ravanshi

Anil K.

Anil K. Rajvanshi
NARI February, 2011

Kerosene lanstove is a device which simultaneously produces very high quality of light, cooks a complete meal for a family of 4-5 people and boils 10 liters of water. The word lanstove has been coined by our Institute NARI (http://www.nariphaltan.org ). The kerosene combustion is excellent with CO levels less than 3-4 ppm and particulates are within WHO limits. Lanstove is as convenient as LPG stove cooking and has been tested in rural households in India. http://www.nariphaltan.org/kerolanstove.pdf

CERAMIC DEVELOPMENT FOR DOMESTIC STOVES

24 February 2011 - 1:20pm

Pemberton-Pigott

Crispin Pemberton‐Pigott October, 2008
Sustainable Energy Technology and Research Centre University of Johannesbrg
Programme for Basic Energy Conservation GTZ/ProBEC a SADC Regional Project

See the attached pdf: CERAMIC DEVELOPMENT FOR DOMESTIC STOVES

Also take a look at Crispin's very good ceramic stove image galleries.

It is intended that this brief report describe in an accessible manner the results of some basic research into the performance of ceramic materials suitable for use to make modern, low‐cost improved charcoal stoves. The
theatre of investigation is the area around Maputo, Moçambique.

The information and ideas are assembled from a large number of tests and reports. If studied carefully an understanding can be gained of the
principle ingredients found in typical clays. It is hoped enough can also
be learned about what the tests show so as to interest the ‘stover’ in a
deeper study of this vast subject.

Some reasons why clay stoves and stove components typically have such a
short life are described and to a certain extent, what can be done about
it.

There is a great deal of material available on how to find, identify and
process clays such as pottery books and the internet. It is not repeated
here. Unfortunately very little of the material available is geared to
the design of low cost ceramics stoves which have problems not encountered
in many industrial applications with far higher temperatures.

Ceramics are complex mixtures of many minerals so it is not possible to
give comprehensive explanations in such a brief text, however the novice
reader should learn enough to be able to deal with a laboratory and
understand some common terminology and the test results. There have been
many technological advances in recent years making accessible tests and
analyses that were previously unaffordable to the ordinary potter.