Sponsored By GE
Team 3
Kwan Hee Lee
Sean Munck
Paul Pfeiffenberger
NO GRID TELECOM BASE STATION ENERGY STORAGE SYSTEM
MISSION STATEMENT• Energy efficient alternative for cell service
• Service to remote areas with no electric grid
• Energy Systems
• Communications
GREATER ACCRA REGION, GHANA• Southern Ghana, bordering the Atlantic Ocean
• Population of 2,905,726 people
• Agricultural Economy
• Contains Accra, largest metropolitan area in Ghana
DESIGN APPROACH
Gantt Chart
DESIGN SELECTION
Design Matrix
DESIGN SELECTIONSelection Matrix
CELL TOWER ANALYSIS• Needs
• Adequate power supply for cell tower (1.2kW)
• Minimize generator use
• Minimize wasted dumped energy
• Maximize cost efficiency
Turbine output
PV output
Generator
Turbine output
PV output Generator Dump0
2,000
4,000
6,000
8,000
10,000
12,000
14,000 Turbine output 0 kwhPV output 12,323 kwh
Generator output 409 kwhGenerator fuel 43 galGenerator hours 468 hrDump energy 502 kwh
BASE STATION SOLUTION• 6.5 kW Solar Panel
• GE Durathon Battery A2 – 24.8 kWh
• Diesel Generator
SOLAR PANELS
• Converts sunlight into electrical power
• Larger panel increases energy efficiency and range
• Dumps excess energy into charging the battery
• Size - 21.5 x 21.5 ft
GE DURATHON A2 BATTERY
• Stored energy – 24.8 kWh
• Life cycle of over 2500 charges, lasting 15 years
• Efficiency
• Discharge >92%
• Recharge >97%
GE HUT SCHEMATIC (USING PV POWER)
CELL TOWER DESIGN
BENCHMARKING
COST ANALYSISCost
Solar Panels (kW) 6.5 $ 45,500.00
Utilities and Antennas $ 150,000.00
Total Initial Investment $ 195,500.00
Gallons of Diesel 43 $ 193.50
Maintenance Cost $ 10,000.00
Maintenance Yearly Cost $ 10,193.50
Subscribers Per Year 9996
Cost of Phone Service per month $ 10.00
Cost of Phone Service per year $ 120.00 Total Money spent for phone service $ 1,199,520.00 Percent Return 10%
Revenue/year $ 119,952.00
Salvage Cost $ 75,000.00
Total Cost Of Power Supply for 25 years $ 67,246.25
CASH FLOW DIAGRAM
SUMMARY
• The solar panel, battery, and generator combination was selected to provide the cell hut and tower with the 1.2 kW.
• Using the Cell Tower Analysis calculator a 6.5kW solar panel and the 24.8kWh battery were found to minimize the generator power and the dumped energy
Any Questions?