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Sketch Model Review Purple B

Develop a low-cost, practical irrigation system powered by bicycles to boost agricultural growth. The product concept includes a water pump that draws and pressurizes water for irrigation, coupled with a bicycle power source. Explore modular attachments for the system. Consider the stability of the power transmission system and potential adjustments for future work. The Indian market, with a significant agricultural workforce and growing demand for irrigation, presents a strong opportunity for such an innovation. Utilize bicycle power transmission with a weighted flywheel for energy storage and momentum. Prioritize efficiency and adaptability in design and consider different pump styles for optimal performance.

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Sketch Model Review Purple B

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  1. Sketch Model ReviewPurple B +

  2. Need Statements A low-cost, practical irrigation system to facilitate the growth of agriculture. An inexpensive power source for rural farmers.

  3. Product Concepts • Water pump • Draws water up from well • Pressurizes water for irrigation • Bicycle Power Source • Power transmission from bicycle to gear train • Potential for modular attachments • Fly wheel stores energy

  4. Competition • Variety of pumps already exist • Hand pumps • Foot pumps • ApproTEC – MoneyMaker foot pump • Markets to East African nations • 38,000 pumps sold • No bicycle-powered pumps marketed to developing country farmers

  5. Customer Data - India • Population – 1.09B people ~110M agricultural workers ~100M bicycles • Economic Impact • GDP per capita = $3100 • agriculture accounts for 22% of GDP • 58% of population depends on agriculture for livelihood • Weather • Reduces risks from droughts and monsoon flooding • Political • Indian PM recently stressed need to improve irrigation (September 27, 2005 - news.yahoo.com)

  6. Market Growth • Growing demand for irrigation in India • As of 2000, only 43% of food-grain growing land was fully irrigated • India is only one case study – many others countries could benefit. www.indiaagristat.com

  7. Critical Module #2: Bicycle Power Transmission • FEATURES • Fits most any bicycle • Gear train transmits energy to modular attachments • Weighted flywheel increases system momentum and stores energy • WHAT WE LEARNED • Stability is an issue • Power transmission system? • Adjustability

  8. Future Work • Pump • Explore other pump styles • Wheel/Power Train Interface • Connection between rear wheel and gears train • Flywheel • Bicycle Stand • stability

  9. Questions?

  10. Factoids • 150W 12gallons/min @ 60ft head • Assume 75% Efficiency 9 gallons/min • Need 200 Strokes w/ Piston Diameter 2.5” • Pedal Ratio 4:1 50RPM • 316N to pull 10m • Piston Lever/Crank Lever Ratio = 10:1 • Piston/Pedal Gear Ratio = 4:1 • Need 123N at Pedal • Force=123N, Distance = .5m • W=50J/s • 2 Pedals 100W Needed

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