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Low Cost Alternative Energy Lab. Fall 2011 Meeting of WAPT By Roger Hanke –NTC (Retired). Goals. Provide Hands-on Experience With Solar Power Introduce Students to Basic Terminology Associated with Solar Panels

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Low Cost Alternative Energy Lab


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    1. Low Cost Alternative Energy Lab Fall 2011 Meeting of WAPT By Roger Hanke –NTC (Retired)

    2. Goals • Provide Hands-on Experience With Solar Power • Introduce Students to Basic Terminology Associated with Solar Panels • Provide Students with a Lab Experience that Differentiates between Published Data and Real Life Data • Provide Students an Outside Lab in Spring

    3. Challenges • Cost • Firmly believe in small lab groups (four or less) • Storage Space

    4. Solar Panels from Northern Tool Polycrystalline (item #336608) Amorphous (item #121186) 5 watts 12 volts $59.99 • 11 watts • 12 volts • $99.99 ($79.99)

    5. Final Lab Setup • Polycrystalline • Amorphous

    6. Equipment Needed • Two Millimeters • One 25 ohm power resistor • One Polycrystalline Panel Mounted on a Variable Angle Stand • One Amorphous Panel Mounted on a Variable Angle Stand • One Laminated 2’ x2’ sheet Giving Azimuth Angles Ranging from 90o to 270o • Sun Angle Chart for That Day • Blackboard Protractor

    7. Sun Angles

    8. Sun Angle Chartsolardat.uoregon.edu/SunchartProgram.php

    9. Lab Procedure • Part 1 • Set Panel Angle to the Complement of Sun Angle for that Time of Day • Take Current and Voltage reading for Azimuth angles 90o to 270o in 10 o increments • Part 2 • Set Azimuth Angle to the Azimuth Angle for that Time of Day • Take Current and Voltage reading for Panel Angles 0o to 90o in 10 o increments

    10. Results-Part 1

    11. Results – Part 2

    12. Challenges/Improvements • Hard to Read Computer Screens Outside • Cloudless Sky Helps • Read Current and Voltage Directly with the Computer using Vernier Probes • Have the Voltage Probe • Need High Current Probe • Need to Experiment With Different Size Power Resistors

    13. Low Cost Wind Tunnel