Kenya Stove Renovation

EDSGN 100Section 001

Submitted by team 1: Chris Gosdin, Marcus Gergar, Jeff Cully, Tom Stewart

Submitted to funding agencies for Kenya Projects

www.iupui.edu

www.masticasphaltcouncil.co.uk

AbstractCurrent Kenyan stoves create harmful

emissions, which is leading to death by smoke inhalation. Therefore we created a stove that is a revision of the original Kenyan Jiko that will now consist of an aluminum coating shell, a 1:1 ratio of clay to non-clay, and will run on biomass fuel, wood, or charcoal. By making these specific changes, we will decrease emissions, fuel used, and cooking time.

Table of contentsDescription of Task

Problem Statement Design Specifications

Design Approach Consumer Needs Assessment Concept Generation Design Matrices

Final DesignPrototypeEngineering Analysis

Working Mechanism Cost Analysis

Summary and ConclusionsReferences

Description of TaskProblem Statement

Smoke Inhalation

Inefficient Stove Emissions

Poor Economy

No Technological Advancements

Cultural Boundaries

Reluctant to Lifestyle http://www.solutions-site.org/kids/stories/KScat2_sol60.htm

Description of TaskDesign Specifications

Decrease emissions by 50%

Decrease fuel used by 50%

50% faster cooking time

Economically viable

Appropriate for the culture

http://www.solutions-site.org/kids/stories/KScat2_sol60.htm

Design Approach Consumer Needs Assessment

Efficient

Durable

Safer Cooking System

Easy to Use

Affordablehttp://www.solutions-site.org/kids/stories/KScat2_sol60.htm

Design ApproachConcept Generation

We analyzed all of the stoves by comparing each stove to each one of the consumer needs

Envirofit Stove Cooker

http://iapnews.files.wordpress.com/2009/07/envirofit-stove2.jpg

Jikohttp://gorilla.wildlifedirect.org/files/2009/09/jiko-kenya.JPG

Smokeless Cookerhttp://

web.tradekorea.com/upload_file/prod/emp/200906/oimg_GC00024923_CA00307534.jpg

Gassifier Stovehttp://www.trailjournals.com/images/gear/bushbuddy13.jpg

Solar Cookerhttp://solarworldea.com/wp-content/themes/solarworld_v1/images/projects/solar_cooker2.jpg

Solar Heated Grillhttp://

cache.gizmodo.com/assets/resources/2007/04/solar_grill_show01_w460.jpg

Design ApproachStove Selection Design Matrix

Biomass fuel Wood fuel Charcoal Solar panal Smokeless Anaerobic disgestorCost + + 0 - - +Durable 0 + 0 - + -life span + 0 - + + +manufacturing ease + + + - - +emissions + - 0 + + -Effectiveness + - + 0 + 0shipping expenses + + + - - +Community impact + 0 - - - 0Pluses 7 4 3 2 4 4Minuses 0 2 2 5 4 2Net outcome 7 2 1 -3 0 2Continue yes yes yes* no no no

Jiko Fuel Matrix

Jiko Fuel Design Matrix

Aluminum coating Iron coating Copper coating Powder coatings Terne coating(zin/tin)Cost 0 - - - -Durable + + + + 0life span + - + + +manufacturing ease + - + - 0emissions 0 0 0 0 0Effectiveness + 0 + + +shipping expenses 0 0 - - -Community impact + 0 - - -Pluses 5 1 4 3 2Minuses 0 4 3 4 3Net outcome 5 -2 1 -1 -1Continue yes no no no no

Jiko coating

Jiko Coating Design Matrix

100% clay 1:1 clay/non clay 10:6 clay/non clay 6:10 clay/nonclay 100% metal PorosityCost + - + + + +Durable - + - - + -life span - + - - - +manufacturing ease + + - - 0 -emissions - 0 0 0 - +Effectiveness - + 0 0 - -shipping expenses + + + + + 0Community impact 0 + + + - 0Pluses 3 6 3 3 3 3Minuses 4 1 3 3 4 3Net outcome -1 5 0 0 -1 0Continue no yes no no no no

Clay and Metal Matrix

Clay and Metal Design Matrix

Final design

Stove Type: Jiko

Coating: Aluminum

Clay and Metal Ratio: 1:1 Clay to Non-clay

Fuel: Biomass, Wood, Charcoal

Prototype

Prototype

Engineering Analysis Working Mechanism

1) Place fuel on in upper chamber2) Light the fuel

1) Combustion occurs1) Air will flow through bottom

where there is a slit and door3) Fuel burns4) Heats food in pot on top of Jiko5) Ashes fall through holes in clay

to bottom6) Recover waste

http://alaninkenya.org/wordpress/wp-content/uploads/2008/07/jiko_na_githeri.jpg

Engineering AnalysisCost Analysis

Cheap long lasting aluminum coating – aluminum is recyclable and also is durable.

1:1 ratio of clay to non-clay – this is the most durable form of clay and it can with withstand the most heat.

Biomass Fuel – get a lot for a low cost because of its high energy generation, it is also a prevalent resource

Wood Fuel – very prevalent resource therefore cheap Charcoal – where biomass and wood are scarce, charcoal

is the cheapest substitute Business – current builders of Jiko can still produce

without going through a vigorous learning process The cost will be between 4 and 5 dollars

Summary and ConclusionsRedesigned Jiko

Social Little change

Environmental The fuel used will decrease emissions Recycled materials

Economic Within price range Sustains and provides new employment

Changes Aluminum coating will reduce rust Biomass, Wood, Charcoal 1:1 ratio of clay to non-clay

References 1. <http://www.kenya.go.ke/>.2. <http://www.hedon.info/BP16:MaterialsForMudStoves-Kenya>.3. <http://kenyaembassy.com/>.4. <http://www.state.gov/r/pa/ei/bgn/2962.htm>.5. <http://www.hedon.info/docs/

WhatMakesPeopleCookWithImprovedBiomassStoves.pdf>.6. <http://www.hedon.info/DisseminatingImprovedStovesInAfrica>.7. <http://envirofit.org/>.8. <http://lilt.ilstu.edu/psanders/juntos.html>.9. <http://w1.siemens.com/responsibility/en/sustainable/

protos.htm>.10. <http://www.solarcookers.org/>.11. <http://www.energyjustice.net/digesters/>.12. <http://www.stovesonline.co.uk/smokeless_fuels.html>.