Energy Efficiency Retrofitting of Lighting in University Libraries Based on Illumination Suitability Analysis

Abstract

Taking the lighting energy efficiency retrofitting of a university library as a case study, this study aims to solve the existing problems in energy efficiency retrofitting in library lighting, such as one-sided consideration of factors, deviation from reality, and rebound of energy use. On the basis of illuminance suitability analysis, this study considers the technology and economy factors into the decision-making process and constructs a decision-making system for realizing the energy saving goal of the system. Findings show that using the illuminance suitability analysis data to determine the illuminance trigger threshold of energy saving light source and intelligent lighting system can guarantee the lighting energy saving rate and lighting visual environment, eliminate the “energy use rebound effect”, and achieve good technical and economic results.