Solar Powered Water Distillation Device

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Solar Powered Water Distillation Device

• Eric Frasch, Mike Santorella, Mikio Yanagisawa,
  Stephen Coffrin

Advisor Professor Mohammed Taslim
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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

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Project Statement

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

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Project Goals

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

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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

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Patent Periodical Research Results

• Beneficial Ideas
• Troughs
• Water height lt 2 cm
• Mirrors
• Beneficial Information
• Asymmetrical superior to other designs
• 30 more efficient

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Market Search
Rainmaker 550TM
El Paso Solar Energy Association (EPSEA) Aid
Project
The Water Cone

• Unit Cost - 479.00

• Estimated cost 400-600
• Built supplied by aid organization

• Not currently in production
• Very low output

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Thermal Circuit

• Energy balance at water, glass, and air inside
• Spreadsheet program developed
• Inputs ? Output temperatures
• Results 2 gallon output requires 1 m2

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Thermal Circuit Validation

• Est. Solar Rad 1.8 kWhr/m2
• Input 2 L
• Output 200 mL
• Windspeed, T8, and other inputs entered into
  program

2nd Prototype
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Results Twater gt Tair gt Tglass gt T8
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Design Outline
Float Valve
Input Tank
Reflective Walls
Insulation
Troughs
Collection Unit
Adjustable Legs
Output Tank
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Basin Features
Troughs
Float Valve

• 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
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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
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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

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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)

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Questions?
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Cost Analysis
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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

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Solar Energy - Boston
December Average Value 1530 Whr/m2
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Solar Energy - Somalia
Average Value 6000 Whr/m2