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?