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Solar Powered Water Distillation Device

Solar Powered Water Distillation Device. Eric Frasch, Mike Santorella, Mikio Yanagisawa, Stephen Coffrin. Advisor: Professor Mohammed Taslim. Problem Statement. Over 1 billion people without access to clean water worldwide 26.8% in Africa

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Solar Powered Water Distillation Device

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  1. Solar Powered Water Distillation Device Eric Frasch, Mike Santorella, Mikio Yanagisawa, Stephen Coffrin Advisor: Professor Mohammed Taslim

  2. Problem Statement • Over 1 billion people without access to clean water worldwide • 26.8% in Africa • Clean water essential to stop spread of disease & improve overall health • Solar energy = untapped resource

  3. Project Statement • Design low cost, solar powered water distillation device for coastal areas of Africa without access to clean drinking water

  4. Project Goals • Solar powered • Affordable • 2-4 gallons per day • Practical • Efficient • Easy to clean

  5. Water Distillation • Process that removes impurities & contaminants • How? • Heat water to point of vaporization • Water vapor condenses on cooler surfaces • Condensate runs off into collection bin

  6. Patent & Periodical Research Results • Beneficial Ideas • Troughs • Water height < 2 cm • Mirrors • Beneficial Information • Asymmetrical superior to other designs • 30% more efficient

  7. Market Search The Water Cone® El Paso Solar Energy Association (EPSEA) Aid Project Rainmaker 550TM • Not currently in production • Very low output • Estimated cost $400-$600 • Built & supplied by aid organization • Unit Cost - $479.00

  8. Thermal Circuit • Energy balance at water, glass, and air inside • Spreadsheet program developed • Inputs  Output temperatures • Results: 2 gallon output requires ~ 1 m2

  9. Thermal Circuit Validation • Est. Solar Rad: 1.8 kWhr/m2 • Input 2 L • Output 200 mL • Windspeed, T∞, and other inputs entered into program 2nd Prototype

  10. Results: Twater > Tair > Tglass > T∞

  11. Design Outline Float Valve Input Tank Reflective Walls Insulation Troughs Collection Unit Adjustable Legs Output Tank

  12. Basin Features Float Valve Troughs • Mirrors • Slotted tray • Min. volume with max. surface area • Black body surface • Easy to level • Adjustable legs • Mounted levels • Max. water depth: 1.5 – 2 cm • Regulated by float valve • Easy cleaning • Wipe down tray with cloth Bubble Level Output Tank

  13. Input & Output Features Input Tank • Input • Preheated water tank • Tube leading to float valve/basin • Output • Collection mechanism • Stored under basin • Easy to remove tank Float Valve Collection Unit

  14. Design Overview • Cost: $379.77 • Highly insulated • no heat loss • Mirrors to reflect radiation • Small bodies of water • Self regulating water level • Easy cleanup / collection

  15. Future Plans • Test Final Prototype • Decrease manufacturing costs ~ $90.00 • Mold numerous parts • Buy parts in bulk • Market Design • Red Cross • Mercy Corps • UNICEF (United Nations International Children's Emergency Fund) • WV (World Vision)

  16. Questions?

  17. Cost Analysis

  18. Importance of Solar Power • UN Climate Change Conference (Indonesia) • Attempting to agree to curb the amount of greenhouse gas emissions “The Earth's atmosphere is being changed at an unprecedented rate by pollutants resulting from wasteful fossil fuel use ... These changes represent a major threat to international security and are already having harmful consequences over many parts of the globe.... it is imperative to act now.” • Emphasizes the importance of using renewable resources

  19. Solar Energy - Boston December Average Value – 1530 Whr/m2

  20. Solar Energy - Somalia Average Value – 6000 Whr/m2

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