Human Powered
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Transcript of Human Powered
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Human Powered
Dustin Drake, Alfonso Liguori, Jeremy Smith
Florida Atlantic UniversityDepartment of Ocean and Mechanical Engineering
Modular SystemProviding Basic Needs for Developing Countries
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Human Powered Modular SystemPurpose:
Create a device capable of providing basic needs to people in developing nations at a relatively low cost
Focus:Water purification is most important featureAdditional modules enhance the benefits of the
water purification systemLow cost
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Human Power Supply
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Human Power SupplyFor long duration / low intensity operations
Human input = 0.1 hp Very sustainable for a healthy person Short duration / low intensity operations will not
overly tire the operator
For Short duration / high intensity operations Human input = 0.2 hp Sustainable for durations less than 3 hours Will leave the operator very tired after extended
operation
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Human Input MechanismGoals:
Simple, natural motion Efficient transfer of mechanical energy
Design Criteria: Portable Rigid Construction Multiple gear ratios
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ModulesWater Filtration
Electricity Generator
Irrigation Pump
Millstone
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Reverse OsmosisPurifies water
Highly efficientRelatively low cost4 stages of filtration
Sediment filter Activated carbon filter RO membrane Activated carbon filter
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Numerical AnalysisPower requirement:
P = Q*p(P: Power, Q: volumetric flow rate, p: pressure)
p = 100 psiQ = 19 gal/hr
P = 0.019 HP
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UV PurificationDisables reproduction of microorganismsRO system filters outMost effective at 253.7 nm wavelength
Different microorganisms require different intensitiesAverage approx. 30 mJ/cm2
Power required depends on exposure time affected by:Size of bulb and pipeFlow rate of water
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Electrical Generation ModuleGoals:
Charge various types of batteries up to 12V Provide a source of low current DC electricity for
high efficiency light sources (LED based)
Design Criteria: Human input = 0.2 hp Expected efficiency = 30% Expected output = 4 Amps (for 12V)
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Irrigation ModuleGoals:
Obtain unfiltered water Irrigate a small field
Design Criteria: Flow Rate, Q = 5 GPM Well Depth = 100 ft Human Input = 0.18 hp Reliable Long pump life Simple to maintain
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Grist Mill ModuleGoals:
Grind grain
Design: Must accept various types of grain Must be able to provide different levels of grind
fineness: Fine grinds for flower Coarse grinds for cornmeal
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Conclusion This product is design for use in developing
countriesExpected final cost