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Lighting Hours of Use

Lighting Hours of Use. EnergyStar New Construction David Baylon. Metering Lighting Runtime . KEMA evaluation of EStar n ew construction logged hours of use (HOU) 467 fixtures logged in 68 homes Fixtures logged using an on-site random assignment Runtime accumulated by room type.

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Lighting Hours of Use

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  1. Lighting Hours of Use EnergyStar New Construction David Baylon

  2. Metering Lighting Runtime • KEMA evaluation of EStar new construction logged hours of use (HOU) • 467 fixtures logged in 68 homes • Fixtures logged using an on-site random assignment • Runtime accumulated by room type. • Average HOU calculated from the weighting of each room type. • For sample average HOU for the lighting systems was 1.2 hours

  3. HOU Calculation • The 2005 Residential New Construction Characterization (RLW,2007) • 604 lighting audits across the region • Detailed Lighting power divided into 24 room types • Reallocated into EStar HOU categories • The EStar evaluation (KEMA, 2010) • 345 homes with lighting audit, • 68 with runtime meters on 6 to 8 fixtures. • Runtime weights use the lighting loggers only • Final HOU estimate: RLW fixture weights, KEMA runt time results

  4. Weights by Room Type

  5. HOU metering results

  6. Hours of Use, New Construction

  7. Conclusion • New construction lighting runtime should be reset. • Current lighting runtime used for savings based on 2 hrs/lamp/day • This suggests the runtime assumption be reduced to 1.5 hrs/lamp/day

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