Jiko Tosha

Product Description

Jiko Tosha is a multi-fuel cookstove that can utilize LPG gas/biogas, biomass briquettes/charcoal, dried waste, and firewood as fuel for cooking. The design aims to tackle the issue of stove stacking, for which it integrates traditional components of a rocket stove with single-burner gas stove components. This product was developed and is currently being manufactured by F & M Industries Ltd.

Target SDGs

SDG 7: Affordable and Clean Energy

SDG 3: Good Health and Well-Being

Market Suggested Retail Price

$50.00

Target Users (Target Impact Group)

Household, Community

Distributors / Implementing Organizations

F & M Industries Ltd and local Savings and Credit Co-Operative Societies (SACCOS).

Competitive Landscape

Direct competitors include KIKE Green Cook KD1, Kuniokoa Stove, and Zama Zama.

Manufacturing/Building Method

The Jiko Tosha is manufactured in Kenya by a locally trained workforce. The manufacturing site consists of an assembly line and works on a batch production basis. Most of the parts are manufactured with power hand tools, welding machines, and a semi-manual pressing machine, except for the outer casing and combustion chamber that are manufactured using a sheet metal rolling machine.

Intellectural Property Type

Patent

User Provision Model

This product can be obtained directly from the manufacturer and it can be delivered to customers through courier service provided by F&M Industries Ltd. Users can also obtain the product from local Cooperative societies (SACCOS), through which they can repay the product in installments.

Distributions to Date Status

As of 2019, 1,100 units have been distributed in Kenya.

Fuel type

LPG, biogas, charcoal, biomass briquettes, wood, coconut husk, wood, sawdust

Chimney (yes/no)

Forced or passive

Passive

Pot type

Flat and round bottom

Pot capacity (L)

Thermal efficiency (%)

LPG – 56, Charcoal – 33

PM emissions (g/MJ delivered to pot)

LPG – 0.008, Charcoal – 0.09927

CO emissions (g/MJ delivered to pot)

LPG – 0.38, Charcoal – 9.09

Time to boil (min/L)

Unknown

Design Specifications

The Jiko Tosha is a multi-fuel cookstove that has a design that integrates traditional components of a rocket stove with single-burner gas stove components. It includes rocket stove components such as an insulated combustion chamber, elevated steel grate, ash collector and cast iron pot support; and single-burner stove components such as an LP burner and LP regulator. The design also includes a stainless steel adaptable fuel bed for briquettes and charcoal. Specifications

Height: 30 cm
Outside diameter: 26 cm
Weight: 5.807 kg

Product Schematics

Technical Support

F&M Industries does not have local technicians throughout Kenya. If a part of the stove breaks or gets damaged, it can be shipped to F&M's manufacturing plant for repairs. To move the product from one place to the other, manufacturers use an existing local transport system.

Replacement Components

Replacement for all the components of the stove is available.

Lifecycle

1 year warranty

Manufacturer Specified Performance Parameters

Manufacturers specify this four-in-one clean energy stove was designed to use gas, charcoal briquettes, sawdust, or firewood as cooking fuels. Specified performance targets for this product include fuel savings and higher cooking efficiency.

Vetted Performance Status

Testing carried out by the Kenya Industrial Research and Development Institute (KIRDI) on the stove performance determined that the thermal efficiency of the stove is at an average of 56% while using LPG as fuel, but when using charcoal the efficiency is at 33%. In terms of emissions, it was determined that while using LPG as fuel the CO and PM emissions are very low, but when using charcoal the emissions are average and fairly good respectively. KIRDI concluded that the performance of this product is better compared to many existing in the market now, but recommends to improve the efficiency and CO emissions while using charcoal in order to achieve a Tier 4.

Safety

The safety concerns when using the product with biomass or charcoal as fuel are primarily related with harmful carbon dioxide, carbon monoxide and sulfur dioxide emissions; and when using the product with gas fuel is gas leaking. Another significant safety concern is domestic accidents such as accidental burning or spill-overs.

Complementary Technical Systems

None

Academic Research and References

No academic references.

International Standards Organization (ISO). n.d. Home. iso.org. ISO.

International Standards Organization (ISO). 2018. ISO 19867-1:2018: Clean Cookstoves and Clean Cooking Solutions. iso.org. ISO. June 2018.

International Standards Organization (ISO). n.d. ISO’s International Workshop Agreements.

Global Alliance for Clean Cookstoves. 2013. Interim Reporting Requirements for IWA Tiers of Performance. cleancooking.org. Global Alliance for Clean Cookstoves.

Compliance with regulations

Complies with the following cookstoves rating for the International Workshop Agreements as a streamlined process of the International Organization for Standardization (ISO):

CO Emissions: LPG (Tier 5), Charcoal (Tier 2)
PM Emissions: LPG (Tier 4), Charcoal (Tier 3)
Thermal Efficiency: LPG (Tier 5), Charcoal (Tier 3)

Evaluation methods

ISO 19867-1

Other Information

F&M Industries Ltd is developing a bigger version of the Jiko Tosha named Biko Tosha Max, the aim of the design is to be better suited for institutional use.