Final Project
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Final Project
Renewable Energy Method:
Solar Photovoltaic
Mentors:
Adrienne Gould-Choquette Imanol Gabellanes GoicoecheaUSURBIL
Presenters:
Burton Bellamy Andrew Sink
Iberian Partnership for Technician Excellence, Summer 2012
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Andrew Sink
• Studying Energy Technology at SCF
• Taken various courses related to Alternative Energy
• Electronics Hobbyist
• Very excited to be in Spain.
Iberian Partnership for Technician Excellence, Summer 2012
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Burton Bellamy
• Has an A.S. in Engineering Technology from HCC
• Interested in DIY projects, alternative energy included
• Pursuing a degree in Mechanical Engineering
Iberian Partnership for Technician Excellence, Summer 2012
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Project Scope
• We will be using what is known as a “Grid-tie” system, which allows the PV panels to interface with the electrical grid.
• We are going to show some of the technology and calculations that go into building a system such as this.
Iberian Partnership for Technician Excellence, Summer 2012
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Off Grid Systems
Iberian Partnership for Technician Excellence, Summer 2012
• Battery Banks, a good idea for everybody?
24 kWh System$3,500Would support our house For only 1 day.
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Iberian Partnership for Technician Excellence, Summer 2012
An example of a Grid Tie PV system
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Project Scope
• Site Plan• Monthly House Electrical Loads• Utility Costs• System Sizing• Panel Selection & Connection• Panel Calculations• Net Metering• Costs & ROI
Iberian Partnership for Technician Excellence, Summer 2012
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House Specifications
• 3-bed, 2-bath, 2,000 sq. ft., located in Tampa, FL.
• Single story, 5,000 gal. pool, 2 adults, 2 children.
• The pitch of the roof is 25.5 degrees, the front door is facing NE.
• Calculations made assuming the month of January.
Iberian Partnership for Technician Excellence, Summer 2012
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Household Electrical Loads
• The basic needs in an average Florida home.• The kWh they consume monthly.• Energy efficient products.• Total monthly electrical load is 432.6 kWh.
Iberian Partnership for Technician Excellence, Summer 2012
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Household Electrical Loads
Iberian Partnership for Technician Excellence, Summer 2012
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Efficiency Calculations
• Tilt= tilt-(41-Lat)
• Lat: 28, Tilt:83
• Tilt=83-(41-28)=70
• 75% Efficiency
Iberian Partnership for Technician Excellence, Summer 2012
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Efficiency Calculations
• Leaves us with 4140W (4.1kW)• 4.1kW x 5.6(MPH) x 31= 712kWh/m
Iberian Partnership for Technician Excellence, Summer 2012
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Panel Selection
• Schott Poly 230
• 230 Watt output
• 30 Volts, 7.66 Amps
• Superb Warranty
Iberian Partnership for Technician Excellence, Summer 2012
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System Sizing
• Total of 237.6 sq. ft. of usable space on each side of the roof.
• We used 2, creating a usable area of 475.2 sq. ft.
• 12 panels on each side of the roof
• Orientation/Inclination
• Panels are 5.57 x 3.3 ft. in size.
Iberian Partnership for Technician Excellence, Summer 2012
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Panel Connection
• Series/Parallel Combination
• 3 groups of 8 in parallel.
• Each group provides 30 Volts, 61.28 Amps.
• Total when placed in series is 90 Volts, 61.28 Amps
Iberian Partnership for Technician Excellence, Summer 2012
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Inverter Technology
• Outback Inverter 6000W
• Provides an all-in-one solution for power conditioning. Regulator/Conditioner/AC Inverter
• 120V grid tie-in output, regulated voltage/current
• Provides a small battery back-up
Iberian Partnership for Technician Excellence, Summer 2012
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Component CostsSchott Poly 230 @ $400 ea. (24) $9,600
Outback Inverter 6000W @ $9,400 (1) $9,400
6 AWG Wire, 500 Ft. @$326 (1) $326
Mounting Hardware @ $190 (12) $2,280
Iberian Partnership for Technician Excellence, Summer 2012
Total System Cost: $21,606
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Net Metering
• A brief introduction to Net Metering
• Replace 2 counters with 1 single Bi-Directional grid tie-in Meter.
• Now available through all Florida Utilities
Iberian Partnership for Technician Excellence, Summer 2012
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Total Costs
• Cost of installed system : $21,606
• Cost of energy consumed/year: $467.20
• Projected price of energy generated/year: $758.79
• Price per kWh: $0.09
Iberian Partnership for Technician Excellence, Summer 2012
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Rebate and Incentive Programs
• Florida Renewable Energy Technologies and Energy Efficiency Act
• Provides $4 a watt, maximum of $20,000
• Federal Program
• Allows for 30% to be refunded as a tax credit.
Iberian Partnership for Technician Excellence, Summer 2012
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Return of Investment (ROI)
• Formula = Investment / Yearly Income
• Investment Before Rebate = $21,606
• Investment After Rebate = $1,606
• ROI = ~2 Years
Iberian Partnership for Technician Excellence, Summer 2012
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Conclusion
• Sensible amount of electrical loads• Above 100% power generation• Simple grid tie-in system• Very low amount of maintenance • Very low Return of Investment time
A very good decision!
Iberian Partnership for Technician Excellence, Summer 2012
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Iberian Partnership for Technician Excellence, Summer 2012