Multidirectional Renewable Power Station

James Marvin E-Design 100Matt Quaglia Section 13Daniel RiemanAlan Wisniewski

Certain regions around the world do not have reliable power grids which can support cell phone use or reception

Design an alternative energy telecom cell phone base station that can power a cell phone network, charging station, and limit the use of power diesel generator by incorporating GE’s new NaMx battery as a power storing system for the unit

Problem Statement

Mission Statement

Design an off-the-grid power source for a cell tower in a country with an unreliable power grid

Use NaMx battery to store excess energy Output of constant 1.2-kW load Cost under $500,000

Requirements

Specifications Use renewable power sources Maximize power output of components Use inexpensive materials which meet

structural and insulation needs Minimize the environmental footprint

Ormara, Pakistan Average wind

speed: 6 -7 m/s Average Daily

Radiation for a Tilted Solar Panel: 6-6.5 Kwh/m^2/day

Along the Coast

Natural resources to support the telecom station

Economic potential

Location

Wind Turbine Solar Array Temperature

Management 20’ x 20’ base

Design Features

Funnels air Receives 6 -7 m/s wind speed in Ormara Utilizes air flow from multiple wind

directions Innovative turbine blade design maximizes

potential for wind energy

Wind Turbine

Initial Air Velocity (m/s) Percent Volume Loss Final Velocity (m/s) Active Area Density (kg/m3) Power (W)

6.50 0.00 18.35 3.10 1.20 114916.50 5.00 17.43 3.10 1.20 98526.50 10.00 16.52 3.10 1.20 83776.50 25.00 13.76 3.10 1.20 48486.50 40.00 11.01 3.10 1.20 2482

Wind Turbine Power Analysis

Output Efficiency (%) Final Output (kW)

8377.20 25 2.094847.92 25 1.218377.20 45 3.774847.92 45 2.188377.20 59 4.944847.92 59 2.86

Four 24”x48” GE CdTe Thin Film Solar Modules

Allows rotation through 360o

Rail System Solar Array tracks sun

across the sky to maximize hours of direct sunlight

Solar Array

Sky Coverage of Solar Array

Raises to 90o

Closes to 0o

Standard test conditions : 2.88 kW

Average Amount of Sunlight (kW-h/m2 per day) Percent Efficeny Total Area of Solar Array (m2)Energy Output of entire solar array (kw/h)

6.25 10% 2.88 0.2886.25 12% 2.88 0.34566.25 15% 2.88 0.432

Normal operating cell temperature: 2.304 kW

Average Amount of Sunlight (kW-h/m2 per day) Percent Efficeny Total Area of Solar Array (m2)Energy Output of entire solar array (kW/h)

6.25 10% 2.88 0.23046.25 12% 2.88 0.276486.25 15% 2.88 0.3456

Normal operating cell temperature, per individual panel: .576 kWAverage Amount of Sunlight (kW-h/m2 per day) Percent Efficeny Area of Individual Solar Panel (m2) Energy Output (kW/h)

6.25 10% 0.72 0.05766.25 12% 0.72 0.069126.25 15% 0.72 0.0864

Solar Array Power Analysis

Energy Output of Solar Array per hour (kW/h) Daily Output of Solary Array (kW/day)

0.2304 2.304

0.27648 2.7648

0.3456 3.456

Vents positioned along the base of the structure

Air flowing across the opening to the wind turbine creates an updraft

Concrete serves as a thermal mass which resists temperature exchanges between the inside and outside temperatures

Temperature Management

Energy Flow Chart

Needs◦ Availability to builders◦ Provides structural support needed◦ Aids in insulation◦ Can be formed into different shapes◦ Keeps cost low

Steel reinforced concrete

Materials

CostOur Building Diesel Generator

Initial Cost: $277,500 Maintenance Cost over 15

years: $18,000 Total Cost over 15 years:

$303,00

Initial Cost: $10,000 for a 30 kW generator

Operational: $3.20 per gallon of diesel fuel in 2010

To run base station per year: $11,000

Total Cost after 15 years: $373,000

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 250

100000200000300000400000500000600000700000

Long Term Cost Analysis

MRPSDiesel Generator

Years

Cost

in D

ollars

Conclusion Design meets all of the required specifications Has a large safety factor greater than the 1.2 kW

load Design features innovative renewable energy

sources ◦ Wind funneling vertical turbine◦ Rotational and hydraulic solar panel

More cost efficient than a diesel generator over time◦ Payoff period is 12 years, and in 25 years diesel cost is

double that of the MRPS design Design is very versatile and can be used in many

areas around the world

General Electric Penn State Engineering

Department

Thank You