1. DESIGN THAT MATTERS Energy Efficient Stove Innovator – Mr. Prakash. Guide - Saleem Ahmed Students – Christy, Divya, Nived, Kishor, Puttaraj Energy Efficient Stove

2. DESIGN THAT MATTERS Energy Efficient Stove Product Background Some characteristics of the original product are: Water is used to transfer heat for secondary use from primary burner Flexible pipe is used to divert heat to another vessel or to the same vessel.

3. DESIGN THAT MATTERS Energy Efficient Stove Some limitations of the existing product are: Not formally marketable No secondary heat storage facility – no secondary use for steam Factor of safety is low – open circuit Time to achieve steam is long Water doesn't retain heat for long Problem of maintaining water level Scaling problems Corrosion

4. DESIGN THAT MATTERS Energy Efficient Stove Product Design Brief To design a multi functional energy efficient stove using “single burner double stove" principle for the rural household The product should be:  safe  user friendly  portable  able to use different kinds of biomass  Indian

5. DESIGN THAT MATTERS Energy Efficient Stove Data collection RESEARCH Looking at various models of "energy efficient" stoves over the world, and seeing "local" solutions to similar problems. use of local materials harnessing maximum energy looking at conventional cooking spaces looking at varied needs / requirements of end user different functional attributes The other countries that have similar products are: Kenya Ethiopia Sri Lanka China

6. DESIGN THAT MATTERS Energy Efficient Stove The other component of research includes the study of different materials that can be used for the product. Some of the materials are: oils ceramics metals pipes insulation fuel

7. DESIGN THAT MATTERS Energy Efficient Stove Initial principle Water Cooking system Steam Heat Fuel Improvement Cooking system Secondary heater Heat Fuel Heat transferring medium

8. DESIGN THAT MATTERS Energy Efficient Stove Skeleton Prototype

9. DESIGN THAT MATTERS Energy Efficient Stove Factors to be considered for detailed design SAFETY safety from open fire pipe explosion burning of biomass leakage of oil clogging of oil inside closed circuit oil level should be maintained thermal insulation flash point of oil shouldn't be too low stability of stove hot plate smoke free no sharp edges

10. DESIGN THAT MATTERS Energy Efficient Stove FUNCTIONS to satisfy conditions of primary and secondary cooking ability to accommodate different sizes of vessels to use maximum amount of the generated heat portable stable easy ash removal blowing device ability to use different types of biomass - firewood, charcoal, coconut shells, compost, dry leaves, cow dung cakes temperature indicator hot plate function hot plate surface quality cleaning non stick surface flue gases directed away from user flue gases used for secondary heating device

11. DESIGN THAT MATTERS Energy Efficient Stove ERGONOMICS physical/visual ergonomics height for reasonable access smokeless right weight for portability prominent placement of indicators handles for lifting dimensions of stove distance between plates shape of pipe for ideal flow materials used - use of local materials, availability, production techniques, color, texture cultural attitude of cooking

12. DESIGN THAT MATTERS Energy Efficient Stove MARKET cost - cost efficient, affordable packaging - should emphasize "efficiency" of stove, include instructions for use production - mass produced, materials, reduction in cost, advertising technology manufacture distribution retail disposal recycling

13. DESIGN THAT MATTERS Energy Efficient Stove Conceptualization

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17. DESIGN THAT MATTERS Energy Efficient Stove Attributes Protection from open fire Preventing oil leakage Maintaining oil pressure Maintaining oil level Protection from hot surface Maintaining stability To satisfy conditions/functions of primary and secondary cooking Portability Removal of smoke Removal of ash To accommodate different vessel sizes

18. DESIGN THAT MATTERS Energy Efficient Stove Thank you