Wisdom Stove M2
Wisdom Stove M2 is a natural draft gasifier that has the capacity to use in a continuous process both dry biomass and its formed char as cooking fuels.
Kenya and Zimbabwe.
Goal 7: Ensure access to affordable reliable sustainable and moder energy for all.
Women and children who use open fire as their cooking method.
The Wisdom Stove M2 is manufactured by Wisdom Innovations. The cookstove is made with locally available materials and manufactured by a locally trained workforce in North Kinangop, Kenya. All of the stoves components are manually manufactured, including the outer cylinder, fuel cylinder, concentrator lid, riser and handles. Most of the M2 components are constructed with mild, galvanized or stainless steel metal sheets except the ceramic insert.
Wisdom Stoves M2 are distributed through microfinance institutions, SACCOs, dairy co-operatives/societies and other organized groups.
Exact number unknown, however according to wPOWER some 3,700 stoves have been sold across four counties in Southwest Kenya: Kiambu, Nyandarau, Narok, and Nakuru.
What fuel type the stoves uses
Does the stove have a chimney?
Whether the stove is forced draft or passive
What pot type(s) the stove can accommodate
The efficiency in terms of heat delivered to pot compared to overall heat produced through combustion
PM2.5 emissions of the stove per MJ
CO emissions of the stove per MJ
The capacity of the pot the stove can accommodate
The amount of time it takes to bring XL of water to a boil; Format: X mins per X L
The Wisdom Stove M2 is a Top-lift updraft gasifier and it’s design is primarily composed of two concentric cylindrical containers. The inner container is the fuel cylinder and has holes that function as primary air inlets to gasify the fuel, while the outer container serves as a structural component and has another set of holes that function as secondary air inlets to burn the fuel gas. The M2 is a natural draft cookstove, primary and secondary air required for combustion are circulated naturally. The design also includes a ceramic insert to retain heat.
Maximum Pot Capacity: 15 L
Dimmensions (l/w/h): 280/280/430 mm
User manual of the stove is available in both English and Kwahili. It is possible to contact local technicians through a customer care line.
Contact the manufacturer.
Designers specified performance targets include cooking and production of charcoal simultaneously, reduction of harmful smoke, environmental conservation awareness and cost savings in fuel consumption.
The Department of Chemistry Laboratories from the University of Nairobi conducted the approved simulation of the cooking process, the Water Boiling Tests (WBT). The tests showed average values for the measures of:
- How efficiently a stove uses fuel to heat water in a cooking pot.
- Quantity of emissions produced while cooking.
The Partnership on Women’s Entrepreneurship in Renewables (wPOWER), under their “Where are the women in the energy sector” series, developed a case study on a six-month project undertaken by Wisdom Innovations. wPOWER stated the key findings on Wisdom Innovation’s performance as:
- Women play a critical role as key drivers in the household clean energy supply chain.
- Recruitment of women as local sales and customer service agents provides insight into the local dynamics of the communities they work in.
- Working with established women’s networks promotes sustainable adoption of clean energy technologies.
- Providing access to affordable finance is essential in ensuring clean cooking solutions are made available to low-income households.
Unviversity of Nairobi as one of Global Alliance for Clean Cookstoves Kenyan Regional Testing and Knowledge Centers (RTKCs). The Partnership on Women’s Entrepreneurship in Renewables (wPOWER).
The safety concerns associated with the usage of biomass burning cookstoves are primarily related with carbon dioxide, carbon monoxide and sulfur dioxide emissions.
Another significant safety concern is domestic accidents such as accidental burning or spill-overs.
Ehrensperger, A., Gatimu, J., Willi, S., Kitala, J., Okoko, A., Shuma, J., Sago, S., Kiteme, B., Wymann von Dach, S. 2017. What future for cooking with solid biomass? The benefits of improved stoves and micro-gasifiers. ProBE Policy Brief 1.
Tryner J, Willson B, Marchese A. 2014. The effects of fuel type and stove design on emissions and efficiency of natural-draft semi-gasifier biomass cookstoves. Energy for Sustainable Development, 23: p. 99-109.
2017. Advanced biomass cookstove distribution. Winrock International.
2018. Wisdom Innovations Case Study: Where are the women in the energy sector?. Partnership on Women’s Entrepreneurship in Renewables.
Complies with the following cookstoves rating for the International Workshop Agreements as a streamlined process of the International Organization for Standarization (ISO) :
- Tier 2 for emissions.
- Tier 1 indoor emissions.
- Tier 2 for safety.
Wisdom Stoves has another top lit up-draft gasification stove design called Malakai Jiko or MJ.
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