A Comparative of Energy Efficiency of Luminaries for General Lighting for a Residential Building: CFL vs LED

摘要

This paper presents comparison study between two types of lighting technologies; the compact fluorescent lighting (CFL) and light emitting diode (LED) luminaries for home general lighting usage. This study includes all parts of the luminaries that include the lamp itself and the housing. An experimental test was done to verify the luminance produced by the two technologies. The generated energy of the two technologies was compared by using DIALUX software under the same lumen flux. Furthermore, the associated cost is also evaluated over the stipulated operational period which shows the most advantages of the LED technology over CFL although the initial capital cost for LED is 22% higher than CFL. However, this increment can be equalized by a short payback period of nearly 18 months for the case. This comparison shows that the LED luminaries have the advantages of a significant reduction in the environmental impact, i.e. reduction of 41-50% of greenhouse gas emission and energy demand, mainly due to lower energy utilization and substantial reduction of 60-78% in electrical consumption.