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Title: Laboratory Validation of Integrated Lighting Systems Retrofit Performance and Energy Savings

Journal Article · · Energies (Basel)
DOI:https://doi.org/10.3390/en13133329· OSTI ID:1685052
 [1];  [1];  [1];  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
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Light-emitting diodes (LED) fixtures and lamps have emerged as leading technologies for general illumination and are a well-established energy efficiency retrofit measure in commercial buildings (from around 2% of installed fixtures and lamps in 2013 to 28% by 2020). Retrofit approaches that integrate elements, such as networked controls, daylight dimming, and advanced shade technologies lag in comparison. Integrated retrofits have been shown to increase savings over single end-use retrofits, but are perceived as higher complexity and risk. More validation of integrated lighting system performance is needed. This study presents results from laboratory testing of three packages combining fixtures, networked controls, task tuning, and daylight dimming, advanced shades, and lighting layout changes. We characterize performance in perimeter open-office zones, finding energy savings from 20% for daylight dimming and automated shades (no LED retrofit) to over 70% for LED retrofits with advanced controls and shades or lighting layout changes. We present some implementation details, including lessons learned from installation and commissioning in the laboratory setting. We also discuss cost-benefit analysis approaches for the types of packages presented, including the need to quantify and incorporate energy and non-energy benefits for advanced shades packages, which enhance occupant comfort but add significant cost.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office; California Energy Commission
Grant/Contract Number:
AC02-05CH11231; GFO-16-304
OSTI ID:
1685052
Journal Information:
Energies (Basel), Vol. 13, Issue 13; ISSN 1996-1073
Publisher:
MDPI AGCopyright Statement
Country of Publication:
United States
Language:
English

References (6)

Manually-operated window shade patterns in office buildings: A critical review journal February 2013
Evaluation methods and development of a new glare prediction model for daylight environments with the use of CCD cameras journal July 2006
Quantifying the benefits of a building retrofit using an integrated system approach: A case study journal January 2018
Dynamic Daylight Performance Metrics for Sustainable Building Design journal July 2006
Useful daylight illuminance: a new paradigm for assessing daylight in buildings journal March 2005
A review of methods to match building energy simulation models to measured data journal September 2014

Figures / Tables (15)

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32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
integrated lighting retrofits
advanced lighting controls
daylighting
LEDs
commercial buildings
energy savings
automated shading systems