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Team Seven: Fanny Wu Sam deVries Bharadwaj Mathukumilli Chris Cioffi Sponsored by GE Slide 2 Problem Statement Third world nations often lack a reliable grid where the majority of the population is living under the poverty line. Hence, we need to find a design that will create a self-sustaining operating system for a cell phone tower to be placed in a location with unreliable access to the mobile network. Slide 3 Our Mission: Our mission is to design a sustainable energy system for a region without access to the grid which will provide reliable power to a cell phone tower that operates with minimal costs and maximum profit. Slide 4 Southeast Kenya Economy: Finance Investment Tourism Agriculture flat landscape Politics: Very politically stable compared to other African nations Mombasas Landscape Flat Very little rain Rarely Windy Sunlight Customers Potential network of 326,080 mobile subscribers Phone Service Providers: Zain and Safaricom Slide 5 Wind Power Propeller generates power from wind Effective over time, but not consistent from day to day due to fluctuating wind speeds in Kenya. Slide 6 Hydroelectric Power Propeller is placed underwater in a river to generate electricity reliably and consistently. Disadvantage: not many rivers in Tanzania, so not very practical. Slide 7 Diesel Power A reliable source of energy, but uses fuel to run it which is not a renewable resource. Slide 8 Solar Power Solar panels generate enough power to run the station and store extra energy into a battery for use at night or on overcast days. Slide 9 Design Matrix Selection Criteria Concepts Wind PowerSolar PowerDiesel fuelHydropower Reliability Sustainability Cost effectiveness Durability Dependability 0000000000 +0+0++0+0+ +-+0++-+0+ -000+-000+ Sum +s Sum 0s Sum s 000000 320320 311311 131131 Net Score Rank Continue? 0 3 No 3 1 Yes 2 Yes 0 3 No Slide 10 Selection Matrix Selection Criteria Weight Concepts Solar PowerDiesel Fuel RatingWeighted ScoreRating Weighted Score Reliability Sustainability Cost effectiveness Durability Dependability 20% 25% 20% 15% 20% 35 43335 433 0.60 1.25 0.80 0.45 0.60 33 32333 323 0.75 0.60 0.30 0.60 Total Score Rank Continue? 3.70 1 Yes 2.85 2 Yes (but as a back-up source) Slide 11 Our Selection: Power the tower primarily with solar energy. Store extra solar power in battery. Use a diesel generator as a back-up. Slide 12 Our Design: Slide 13 Hut Design Slide 14 Cost Analysis Slide 15 Cash Flow Diagram Slide 16 System Features Main Hut: Cinder block walls Wooden framed roof Six 5 by 4 solar panels on roof GEs Durathon battery Base Transmitter system Air conditioning Lighting system Cell Phone Tower: Guyed tower Slide 17 Team Seven would like to thank GE for sponsoring this cell phone tower design project.