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Abstract

The paper presents a comparative study of some commercial LED lamps for indoor lighting using the energy consumption factor. This article focuses on providing a suitable level of illumination utilizing LED lighting bulbs of various wattages to illuminate a 50-square-meter area, as well as their energy consumption. The CIE publication (S008/E-2001) has recommended an illumination level of 500 lux for indoor workplaces such as offices. The study has included three sets of commercial LED lamps purchased from three companies designated as E, T, and V. Each set included three duplicated lamps with different wattages such as 9, 12, and 15 Watt for repeatability. Thus, a summary of the measured photometric and electric parameters for these lamps was measured to assess their energy consumption.