Kenya Cooking System Design Project

1. Kenya Cooking SystemDesign Project Sponsored by Shell Oil Company EDSGN 100 Section 5 Design Team 7 Nate Michaluk Clay Blunk Brett Cowan Mahesh Katragadda Jack Rowley

2. Table of Contents • Problem Description • Markets • Stakeholders • Customer Needs Assessment • Design Objectives • Benchmarking • Conceptualization • Evaluation • Prototype and Final Design

3. The Problem • Children sick from harmful emissions from traditional cookstoves • High unemployment rate in Kenya

4. Primary Market • Low wage Kenyans • Live in both rural and urban areas Secondary Market • People from all nations with low wages • Outdoor enthusiasts

5. Stakeholders • Shell Corporation • CYEC • Kenyan Population • Pennsylvania State University • College of Engineering • Our design group

6. Customer Needs Assessment • Cost should be no more than $5 for 4 years of cooking • Must last at least 4 years • Able to cook for the average Kenyan family of 5 • Kenyans not willing to pay much more for reduced emissions • System that uses fuel more efficiently as to alleviate the cost of buying fuel • Large cookers for communal cooking should not be considered • Reduced cooking time is desirable

7. Design Objectives • Low cost • Low emissions • Sustainable • Culturally viable • Marketable • Simple to use • Simple to manufacture

8. Current Cooking Systems • Gasifier Stove • Converts organic materials and oxygen into a gas, which is burned • Extremely efficient • Very low emissions • Jiko • Already popular cooker that is locally made in Africa • Cheap, efficient, and low emissions • Runs on solid fuels like charcoal and firewood

9. Current Cooking Systems • Envirofit • Endorsed by Shell • Very high efficiency • Very low emissions • Standard model costs $20 •  Solar Cookers • Focuses sunlight to cook food • Many different design shapes • Cooks less efficient than traditional cookers • Models have already been designed for low wage African communities (Sunstove)

10. Current Cooking Systems • Vegetable Oil Stoves • Use vegetable oil as a fuel • Require kerosene to start up • Anaerobic Digester • Use bacteria to break down manure into biogas • Biogas can be used to cook

11. New Concepts • Exhaust Hood • Induction Cooker • Solar Cooker • Rust Resistant Jiko • Gasifier with Manual Fan • Solar Charging Cooker • Lower Grade Envirofit • Foldable Metal Solar Cooker

12. Evaluation Criteria • Consumer Practicality • Low cost • Easy to assemble • Efficiency • Cooks fast • Uses fuel well (or uses free fuel source e.g. solar) • Safe • Low emissions • Easy to manufacture • Durable • Usable for 10 years • Doesn’t easily crack • User Friendly • Simple to use • Easy to clean • Portable • Small and light enough to carry • Standalone

13. Concept Screening Concepts to Continue • Solar Cooker similar to Sunstove • Rust Resistant Jiko • Lower Grade Envirofit • Foldable Metal Solar Cooker Concepts to Discontinue • Exhaust Hood • Induction Cooker • Gasifier with Manual Fan • Solar Charging Cooker

14. Concept Scoring Best Concept: Rust Resistant Jiko

15. Prototype: Jiko 2 • Very similar design as the original Jiko • Steel exterior replaced with aluminum • More rust resistant • Use scrap aluminum to reduce costs

16. Jiko 2 Cost Estimate • Based on: • $2 to $5 current price • Metal prices in Kenya • 30 percent profit margin $4.50 for smallest model $10.30 for largest model $4.50 $10.30

17. Jiko 2 Advantages Retained Jiko 1 Features • Uses 30% to 50% less fuel than traditional wood stoves • 80% less emissions than traditional wood stoves • New Features • Expected to last 3 times longer • Make money back in about 5 years • 30% Cheaper ($1.5) over Lifetime

18. Questions? References A complete list of sources can be found at our project website: www.personal.psu.edu/nsm5056/cookersite