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LIGHTING A GREEN DORM

LIGHTING A GREEN DORM Taylor Ellis Bragg Syed Muhasin Sayeed Steven Michael Scardato Gregory Ter-Zakhariants Introduction The costs of wasting energy Our project, why we are doing it, and how we went about it How much electricity does lighting use?

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LIGHTING A GREEN DORM

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  1. LIGHTING A GREEN DORM Taylor Ellis Bragg Syed Muhasin Sayeed Steven Michael Scardato Gregory Ter-Zakhariants

  2. Introduction • The costs of wasting energy • Our project, why we are doing it, and how we went about it

  3. How much electricity does lighting use? • Total Electricity: 10,656 kWh per year per household, 1.1 trillion kWh for the country for residential lighting • 9.1 percent of electricity to lighting-110.6 billion kWh for the nation.

  4. How much does this cost? • 8.3 cents per kWh • 9.2 billion dollars nationally for residential lighting alone • One 60-watt light bulb on for an hour, is 0.06 kWh (60/1000) • One 20-watt light bulb on for an hour is 0.02 kWh • For Stanford university room, 2x60 watt incandescent light-bulbs run for 3 hours a day + 4x20 watt ceiling fluorescent bulbs for 10 hours a day=.36+.8 kwH/day=423.4 kwH/year • 423.4*.083=$35 per year • For entire freshman class, about $60,000 • Source: http://michaelbluejay.com/electricity/cost.html

  5. Powering a 100 watt lightbulb, for a year: • 740 lbs coal • 5 lbs. SOx (source of acid rain) • 5 lbs. NOx (source of acid rain, smog) • 1,852 lbs. COx (greenhouse gas) • Source: http://science.howstuffworks.com/question481.htm

  6. Our Project: An Overview • Lighting: An easy way to address energy consumption • Numerous approaches to the problem • Our focus: Light, Power, Power Management, Light Direction

  7. Lighting: A bright, efficient future • Why LED's • Current Technology • Future Technology

  8. Why LED's • Benefits - • Life Span • Durability • Maintenance • Flexibility

  9. What is an LED? • A solid state light source that uses an electrical signal run across a semiconductor

  10. Current Technology • Very attractive options for certain situations • Traffic Lights • Car Lights • Not yet feasible everyday light replacements • No market = high cost and low production • There is a lot of research being conducted in LED technology because of its potential

  11. Future Technology • Most promising lighting technology • Cost Reducing • 50% reduction on energy used for lighting • 10% worldwide total energy reduction • Environmentally Friendly

  12. Power: Plugging in to green energy • Sunny Day  1000 W/m2 • Photovoltaic (PV) module: Solar Cells • Single crystal silicon • Polycrystalline silicon • Others Source: http://science.howstuffworks.com/solar-cell7.htm

  13. Storing the Energy • Deep Cycle Batteries • Utility Grid • Inverter: DC  AC • Expensive: $9 per Watt • prices expected to decrease in the future Source: http://science.howstuffworks.com/solar-cell11.htm

  14. Relevant Projects • BJ’s Wholesale Club • 12K sq. ft., 1330 - 2x4ft. Panels, 52-kW • Saved $1M, 12M kW-hr/yr • Synergy House • 7.5 kW • $77,816 • Saves 11,164 kW-hr/yr, $1,987/yr Sources: http://www.energystar.gov/ia/business/retail/energy_management_csa.pdf http://www.energystar.gov/ia/business/retail/energy_management_csa.pdf

  15. Power Management: Switching it up…for the better! • Cutting down on unnecessary power consumption • Three main lighted areas in any dorm… • Dorm Room, Hallway, and Lounge area.

  16. Power Management – Dorm Room • Keep manual light switches • Possible Improvements • “Dimmer” switches  $20-30 • Power Management workshops Source: http://www.homedepot.com/prel80/HDUS/EN_US/pg_index.jsp?CNTTYPE=NAVIGATION&CNTKEY=pg_index.jsp&m=1143053416553

  17. Power Management – Hallway • Hallways aren’t commonly used during certain hours of the day • Timers  $40-50 • Motion Sensors  $20-60 Source: http://www.aegiswireless.com/web/pop_ups/motion_sensor.html

  18. Power Management – Lounge • During the day  Plenty of natural light • Big Windows • “Photosensors”  $40-60 Source: http://pnpng.ebigchina.com/sdp/120337/4/pd-1088804/304115-546071.html

  19. Lighting Direction: Putting Lighting in its place • Individual Needs • If the dorm doesn’t meet these with efficient lighting, students will be forced to meet them on their own • Inefficient solutions

  20. Three Choices: • One overhead light • Desk lamps • All-included system

  21. Our Solution: Include High Efficiency Desk Lamps • Higher initial purchase costs • Reduce student costs • Decrease energy consumption

  22. Conclusion: Lighting The Dorm of the Future • Lighting • Power • Power Management • Lighting Direction

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