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Basic Energy Audits

Basic Energy Audits

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Basic Energy Audits

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  1. Basic Energy Audits KifScheuer

  2. Types of Linear Fluorescent Light Fixtures

  3. Components of Fluorescent Lighting System Lamps Ballast Light Fixture

  4. Types of Linear Fluorescent Lamps T12 T8 T5 T2 Source: http://plutarco.disca.upv.es/~jcperez/doctorado/SV2D3DPI/energy.arce.ukans.edu/book/sources/low.htm

  5. Energy Audit #1: T12 vs. T8 Fluorescent Lamps T12 Lamps Lamp Typefixture watts 24" T12 1 lamp 28 24" T12 2 lamp 56 24" T12 3 lamp 62 24" T12 4 lamp 112 36" T12 1 lamp 32 36" T12 2 lamp 65 36" T12 3 lamp 115 36" T12 4 lamp 136 48" T12 1 lamp 40 48" T12 2 lamp 72 48" T12 3 lamp 112 48" T12 4 lamp 142 T12/U-bend 1 lamp 34 T12/U-bend 2 lamp 66 T8 Lamps Lamp Type fixture Watts 24" T8 1 lamp 15 24" T8 2 lamp 28 24" T8 3 lamp 41 24" T8 4 lamp 57 36" T8 1 lamp 23 36" T8 2 lamp 42 36" T8 3 lamp 62 36" T8 4 lamp 84 48" T8 1 lamp 25 48" T8 2 lamp 54 48" T8 3 lamp 73 48" T8 4 lamp 94 T8/U-bend 1 lamp 27 T8/U-bend 2 lamp 52

  6. How to tell if a light fixture has T12 vs. T8 lamps? • Spin the flicker checker • Choppy, checkered pattern= magnetic ballast = T12 lamp • Concentric, gray rings = electronic ballast = T8 lamp

  7. T12 vs T8 Activity • Activity Instructions: • Break up into teams of 3-4, grab a flicker checker, and select a specific site to conduct a linear fluorescent light audit, specifically looking at existing T12/T8 lamps in the building. • Usethe worksheet provided to collect information on the study site’s existing lighting condition. • Calculate the potential electricity, cost, and GHG savings associated with upgrading the existing lighting conditions, if an upgrade is needed.

  8. Energy Audit #3 - Delamping: What is it, and why is it important?

  9. Recommended Lighting Levels Developed by the Illuminating Engineering Society Source: Illuminating Engineering Society

  10. How to Use a Light Meter How To Use It • Make sure the sensor is covered. • Check that the “Range” switch is selected to A • Turn on the “Power” button. • Remove the sensor cover. • Read the lighting level. Readings should be taken at the level where the work occurs. • Make sure user does not cover the sensor

  11. Light Meter Activity Conduct a light analysis of the room/building you are in. Example: 3 linear fluorescent fixtures Layout of room: Sample light levels collected from room:

  12. Light Meter Activity • Activity Instructions: • Break up into teams of 3-4, grab a light meter, select a specific site to conduct a light meter analysis in the building. • Draw a floor plan of the study site as shown in the previous slide, and write down different light meter levels (foot-candles). Collect at least 6 light meter levels in different parts of the room. • Based on the recommended lighting level, assess if there is too much/too little light in the study site, and what next steps you would recommend to the facilities staff to help them save energy.

  13. Energy Audit #3: Plug Loads and Phantom Loads • What’s a plug load? • Plug loads make up about 4% of all electricity use in the US • What’s a run watt? • Power drawn by a plug load while in operation • What’s a phantom load? • Aka energy vampires, standby loads • U.S. consumption of phantom loads = electricity use of Greece, Peru, and Vietnam, combined. Phantom load on this printer is 2.8 watts. This translates into _______kWh a year.

  14. Typical Appliance Energy Use

  15. Plug Load Activity • Activity Instructions: • Break up into teams of 3-4 and pick at least one plug load and one watt meter. • Using the handout, calculate the run watts and the phantom load (if any), along with the associated annual energy use, cost, and GHG emissions. • Handout: