Sketch Model Sketch Model ReviewReviewPurple BPurple B

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Need StatementsNeed Statements

A low-cost, practical irrigation A low-cost, practical irrigation system to facilitate the growth of system to facilitate the growth of

agriculture.agriculture.

An inexpensive power source for An inexpensive power source for rural farmers.rural farmers.

Product ConceptsProduct Concepts

• Water pumpWater pump– Draws water up from wellDraws water up from well– Pressurizes water for irrigationPressurizes water for irrigation

• Bicycle Power Source Bicycle Power Source – Power transmission from bicycle to gear Power transmission from bicycle to gear

traintrain– Potential for modular attachmentsPotential for modular attachments– Fly wheel stores energyFly wheel stores energy

CompetitionCompetition

• Variety of pumps already existVariety of pumps already exist– Hand pumpsHand pumps– Foot pumpsFoot pumps

• ApproTEC – MoneyMaker foot pumpApproTEC – MoneyMaker foot pump– Markets to East African nationsMarkets to East African nations– 38,000 pumps sold38,000 pumps sold

• No bicycle-powered pumps marketed No bicycle-powered pumps marketed to developing country farmersto developing country farmers

Customer Data - IndiaCustomer Data - India• Population – 1.09B peoplePopulation – 1.09B people

~110M agricultural workers~110M agricultural workers~100M bicycles~100M bicycles

• Economic Impact Economic Impact – GDP per capita = $3100 GDP per capita = $3100 – agriculture accounts for 22% of GDPagriculture accounts for 22% of GDP– 58% of population depends on agriculture for 58% of population depends on agriculture for

livelihoodlivelihood• WeatherWeather

– Reduces risks from droughts and monsoon Reduces risks from droughts and monsoon floodingflooding

• PoliticalPolitical– Indian PM recently stressed need to improve Indian PM recently stressed need to improve

irrigationirrigation(September 27, 2005 - news.yahoo.com)(September 27, 2005 - news.yahoo.com)

Market GrowthMarket Growth• Growing demand Growing demand

for irrigation in for irrigation in IndiaIndia

• As of 2000, only As of 2000, only 43% of food-grain 43% of food-grain growing land was growing land was fully irrigatedfully irrigated

• India is only one India is only one case study – many case study – many others countries others countries could benefit.could benefit.

Annual Indian Irrigation Requirements

0

200

400

600

800

1000

1200

1980 2000 2020 2040 2060

Year

Water (billions of m^3)

www.indiaagristat.com

Critical Module #1: Critical Module #1: Water Pumping SystemWater Pumping System

• FEATURESFEATURES– Dual Cylinder DesignDual Cylinder Design– Crankshaft Couples to Crankshaft Couples to

Bicycle DriveBicycle Drive

• WHAT WE LEARNEDWHAT WE LEARNED– One potential pump One potential pump

designdesign– Bore & Stroke Bore & Stroke

=12 Gallons/min=12 Gallons/min

– Research into alternative Research into alternative pump designs neededpump designs needed

Technical FeasibilityTechnical Feasibility

• Available Human Power on a bike Available Human Power on a bike ~150W~150W– Well depth + pumping head = 20mWell depth + pumping head = 20m– Force Required per pedal = 30 lbsForce Required per pedal = 30 lbs– Pedal Speed = 50 RPMPedal Speed = 50 RPM

•75% Efficiency75% Efficiency

– 12 Gallons/min12 Gallons/min

• Feasible? Yes!Feasible? Yes!

Future WorkFuture Work

• Pump Pump – Explore other pump stylesExplore other pump styles

• Wheel/Power Train InterfaceWheel/Power Train Interface– Connection between rear wheel and Connection between rear wheel and

gears traingears train– FlywheelFlywheel

• Bicycle StandBicycle Stand– stabilitystability

Questions?Questions?

FactoidsFactoids• 150W 12gallons/min @ 60ft head150W 12gallons/min @ 60ft head

– Assume 75% Efficiency 9 gallons/minAssume 75% Efficiency 9 gallons/min– Need 200 Strokes w/ Piston Diameter 2.5”Need 200 Strokes w/ Piston Diameter 2.5”– Pedal Ratio 4:1 Pedal Ratio 4:1 50RPM50RPM

• 316N to pull 10m316N to pull 10m– Piston Lever/Crank Lever Ratio = 10:1Piston Lever/Crank Lever Ratio = 10:1– Piston/Pedal Gear Ratio = 4:1Piston/Pedal Gear Ratio = 4:1– Need 123N at PedalNeed 123N at Pedal

• Force=123NForce=123N, Distance = .5m, Distance = .5m– W=50J/s W=50J/s – 2 Pedals2 Pedals

100W Needed100W Needed