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Photovoltaic Co-generation

Photovoltaic Co-generation. Group Members Trecia Ashman Paola Barry Zarina Zayasortiz Sponsored By: Duke Farms. Objective.

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Photovoltaic Co-generation

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  1. Photovoltaic Co-generation Group Members Trecia Ashman Paola Barry Zarina Zayasortiz Sponsored By: Duke Farms

  2. Objective To develop a photovoltaic cogeneration system for Duke Farms in Hillsborough, NJ. In order to explore another method for the generation of electricity using a renewable resource.

  3. Photovoltaic Co-generation • Photovoltaic cells are used to harness energy from the sun. This energy can then be directly converted to electricity and be used to power your home or other facility.

  4. Co-generation System • A “parallel” system • Role of Components: • PV Panels • Inverter • Meter • Power Distribution Grid • 3-phase AC Power

  5. Co-generation vs. Storage • Converting to 3-phase AC Power • Only supply residences on site • Necessary storage amount • Cost of storage

  6. Gantt Chart

  7. Answers From Duke • Reasons for interest in project? • Informal discussions  increase public awareness about photovoltaic solar energy conversion • Constraints on potential locations? • 2-4 acres on routes of tours (park areas preferred because of security) • Different uses of electricity on site? • Strictly employee housing, security lighting

  8. PSE&G Specifications • In order for the Co-generation system to be approved it must meet the following standards: • The installation must comply with the provisions of the NEC • Modules must be UL listed • The maximum amount of sunlight available year should not be obstructed • All solar array orientations are require that the estimated system output must be 75% of the default output estimated by PVWATTS • The inverter must be certified as compliant with the requirements of IEEE 929 and with UL 1741

  9. PSE&G Specifications • The system needs the following visual indicators: • On/off switch • Operating mode setting indicator • AC/DC overcurrent protection • Operating status indicator • Warning labels must be posted on the control panels and junction boxes indicating that the circuits are energized by an alternate power source

  10. System Information

  11. Map of Duke Farms

  12. Tracking Options 2-Axis Tracking • North/South & East/West Fixed Plate (static panel) 1-Axis Tracking • North/South or East/West

  13. 20-kW System

  14. 40-kW System

  15. 50-kW System

  16. PV Benchmarking Data

  17. Meter Benchmarking Data

  18. Tracker Benchmarking

  19. Inverter Benchmarking

  20. Required Area Interpolation for 14% Efficiency

  21. Calculations • The amount of solar panels needed is based on: • Rated output wattage of the panel • How long the panel is in the sun • NJ gets 4.6 hours of sunlight • Using 80 Watt panels • Area of one panel = 6.76 ft2 • Amount of area needed for 50kW system = 4528 ft2 • 1kW system = 1250kW-hr/yr • Power generated per month from 50kW sys. = 5208kW-hr

  22. Calculations (con’t)

  23. Preliminary Designs Pyramid tripod design • Fixed plate Single pole mount/array • 1-Axis tracking

  24. Mounting System

  25. Support Specifications • Cap: attaches to horizontal pipe to vertical pipe • includes 3/8” hardware • 2 U-bolts, 4 flange nuts, and 4 screws • Severe Condition 4 zinc-plated welded steel • Slider: attaches lower end of cross braces to rear legs and anchors both ends • Includes 3/8” hardware • 1 cross-brace bolt sized for pipe, 1 flange nut, and 4 set screws • Severe Condition 4 zinc-plated welded steel • Mounting Clamps: attaches to vertical pipe to slider • 6105-T5 Aluminum extrusion • Pipe: infrastructure of the support • 2” diameter ASTM A53B Schedule 40 galvanized steel

  26. Items for Future Work • 1 axis vs. 2 axis based on economics • Available Space for Panels • Cogeneration vs. Storage • Gain in small battery storage • New data received last night (10:47pm)

  27. References • PVWATTS • Duke Farms • Nrel.gov • PSEG.com • BP Solar • Shell Solar • Sharp Solar • Metersusa.com • Xantrex.com • Department of EnergyGreenbuilder.com • Howstuffworks.com

  28. Questions

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