On the Investigation and Experimental Analysis of Energy-Efficient Lighting for a University Building

This paper focuses on studying the energy consumption of the Fluorescent Lights (FL) employed in an educational labrotory and office facility in a university building. The study takes into consideration energy consumption, performance, and thermal air conditioning load of FL. In order to obtain precise results, investigation and experimental testing were carried out for the existing lighting fixtures and compared through the DIALux simulation for lighting performance. The simulation results elucidated that only 25% of the illuminance level required was being provided at an average luminous flux per unit area of 122.44 lux in the laboratory and 294 lux in the office room. With the initial proposed LED compatible fixtures, 48% of energy reduction with 37 lm/W higher efficacy were achieved. This proposal was later amended with fewer and more efficient LED fixtures which leads to 58% of energy reduction, 63 lm/W higher effcacy and 378 lux more. By extending this investigation to the entire building, the total amount of power saving lead to saving 80,0882 kWh in energy consumption per year.