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The Beehive (Honeycomb) Charcoal Briquette Stove in the Khumbu Region
Nepal, Sjoerd Nienhuys, March 18, 2003

Beehive StoveBeehive Stove

The Beehive (Honeycomb) Charcoal Briquette Stove in the Khumbu Region, Nepal, Sjoerd Nienhuys (1 800 kb pdf) March 18, 2003

The document is the result of a mission to Lukla/Mosi (8,000 ft. / 2634 m) and Khumjung (11,800 ft. / 3882 m) in the Khumbu region and contains observations about the use of the Beehive charcoal briquette stove for cooking and space heating. The Beehive charcoal briquette stove has the potential to become a practical source of renewable energy (RE) for domestic use, hotel owners and trekkers in high altitude camping grounds. Currently large amounts of kerosene is being brought into the region to satisfy the need for cooking energy and for use in Everest Base Camp.

The observations in this report are related to the potential use of biomass charcoal briquettes and improved briquette stoves at high altitudes in Nepal. With proper application of the available technology, biomass briquettes can be a means of providing a convenient source of energy for cooking and space heating, substituting the need for kerosene which is a non-renewable energy source subsidised by the Nepalese government.

The need to improve the locally manufactured biomass charcoal briquettes has been also identified by WWF Nepal Programme. The same problems in the supply of energy exist in similar high mountain regions, such as the conservation areas managed by the WWF-Nepal Programme and the King Mahendra Trust for Nature Conservation. The charcoal briquettes are manufactured from agricultural residue and forest waste products. High firewood consumption for domestic cooking and heating purposes is depleting forest reserves because at the higher altitudes, where tree growth is considerably slower than at the lower altitudes such as in the Terai, regeneration of firewood cannot meet the demands. The author looked at some of the technical, social and financial implications of the produced briquettes and stove.

See attached report.

File attachments: 

Renewable Energy Curriculum Design for Schools Potato Cooking as Science Education For Primary and Secondary Schools
Sjoerd Nienhuys Senior Renewable Energy Advisor, SNV-Nepal May 2004, Kathmandu

Renewable Energy CurriculumRenewable Energy Curriculum

A training module providing an example of a school curriculum in the area of energy conservation in households by comparing three different cooking methods for potatoes. The exercise can be undertaken in the classroom or as homework. By undertaking the exercise at home, the families of the students will also be involved and obtain direct practical knowledge. Lower cooking energy needs in rural areas has an important positive gender impact. Through participatory and real case demonstration, primary schoolchildren learn about the different amounts of energy used for different cooking methods. Secondary school students can use the same analysis, but more precise calculations and better understanding of kitchen energy can be developed. The methodology can be replicated for other types of cooking, such as for rice, beans and traditional dishes.

See attached report.

File attachments: 

Installation of Improved Metal Cooking Stoves in the Khumbu Region: Field Visit Reports (3)
Sustainable Technology Adaptive Research and Implementation Center, Nepal Sjoerd Nienhuys, SNV-Nepal January 2005

Khumbu Metal StovesKhumbu Metal Stoves

Attached reports:
(1 of 3)
(2 of 3)
(3 of 3)

The majority of people in Nepal live in rural areas (88%). From the total energy requirements of the country, the rural areas account for 80%, mainly used for cooking. Almost all rural energy consumption (98%) is from traditional biomass resources, such as fuel wood, agricultural residues and animal dung. Accessibility to the electric grid by rural people is very limited, while LPG gas and kerosene oil in the high altitude and remote areas is relatively costly due to the high cost of
transport. Therefore, people living in remote areas depend heavily on forest resources to meet their demand for cooking energy.

In high altitude areas fuel wood is needed for cooking and space heating; the amount increasing with the altitude and colder temperatures. This results in continuous forest degradation, nutrient depletion from soils (by burning agro waste and cow dung), low agricultural outputs and soil
erosion. Together, these aspects result in a further reduction of accessibility to fuel wood.

File attachments: 

Cooking Stove Improvements: Design for Remote High Altitude Areas Dolpa Region Nepal, Sjoerd Nienhuys April 2005

Metal and mud cooking stoves are analysed in Dolpa, a remote high altitude district in Nepal (over 2000m) where poor firewood efficiency of cooking stoves has been observed whilst the area is already largely deforested. Current metal or mud stoves have the air-intake above the firewood, lowering gas temperatures and causing incomplete combustion. More than 20 improvement options are presented in a table. These lead to higher burning temperatures, reduced firewood consumption and lesser soot development. Modifications have been made to lower manufacturing costs. The paper briefly explains the principles of the improvements and provides detailed sketches of the solutions. Improved cooking efficiency requires chopping of the firewood into
small pieces, but the additional time spent is balanced against the considerably less time spent in the collection of firewood. The prototype stove has been field-tested and modified several times to produce a model that is easy to manufacture and is acceptable to the villagers.

Information is based on the author’s personal experience and technical information from the stoves discussion group at www.stoves.bioenergylists.org

Ethanol Stove:Development of Stove running on low ethanol concentration, June 2005 Anil Rajvanshi Nimbkar Agricultural Research Institute, Phaltan, Maharashtra, India

Only 17.5 % of all Indian homes use LPG as their primary cooking fuel, with 90 % of rural households dependent on some form of biomass. To improve the quality of life of such a large number of people, it is imperative that clean and renewable alternatives are provided for cooking. This paper presents one such. An ethanol stove running on 50 % ethanol-water mixture has been developed at Nimbkar Agricultural Research Institute (NARI). The stove allows easy flame regu-lation and gives an output similar to the conventionally-used LPG and kerosene stoves. Field tests conducted on the stove show that it is safe to use and very suitable for a typical rural household. In addition, the cost of using the ethanol stove is comparable to those of the conventional liquid fuel alternatives. However, for this stove to be a viable alternative certain policy issues have to be tackled. These have been suggested at the end of this paper.

File attachments: 

TWO-BURNER RICE HUSK GAS STOVE FOR DOMESTIC OR INSTITUTIONAL COOKING OPERATION, Alexis Belonio, Appropriate Technology Center, Iloilo City, Philippines October 2005

Crispin Pemberton-Pigott, New Dawn Engineering, Swaziland, March 2006

Crispin provides new images of the Libhubesi, the Lion stove, showing completion of construction.

Rocket Stoves and other technologies – state of the art in Malawi (pdf), GTZ ProBEC North, Andi Michel, January 2006

Development of Tobacco Rocket Barn for Small Holder Farmers in Malawi: A collaboration of ProBEC/GTZ, Limbe Leaf and Aprovecho, Peter Scott January 2006

Cookstove Safety, Nathan G Johnson, Iowa State University, February 2006


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