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DOE OSTI · 3022396

Development of Lighting Application Efficacy Measurement Framework

Durmus, Dorukalp [Pennsylvania State Univ., University Park, PA (United States)] (ORCID:0000000198092406)
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Abstract

Lighting significantly contributes to electricity consumption in buildings. The most widely used measure of lighting energy efficiency, luminous efficacy, quantifies only the intensity of light generated by light sources, weighted by the spectral sensitivity of the human visual system (i.e., the energy efficiency of individual lighting devices). However, luminous efficacy does not fully address the use of lighting in architectural spaces. To address these limitations, we developed a framework to framework to calculate lighting application efficacy (LAE), the relationship between the electrical power consumed by lighting hardware, and the amount of light that contributes to the visual perception of building occupants. The proposed LAE framework is based on the primary pathway of light in architectural settings: the generation and emission of light from a luminaire, the travel of the light throughout the space and into the eyes of occupants, and the process of visual perception. The project’s primary outputs are a method for measuring lighting application efficacy and a framework for facilitating future research to improve the metric.

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Durmus, Dorukalp [Pennsylvania State Univ., University Park, PA (United States)] (ORCID:0000000198092406). 2025-08-31. Development of Lighting Application Efficacy Measurement Framework. https://doi.org/10.2172/3022396

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