Influence of the Advancement in the LED Lighting Technologies on the Optimum Windows-to-Wall Ratio of Jordanians Residential Buildings

Based on recent developments and the predicted future advancement of lighting technologies, researchers are now questioning extent to which daylight is effective in lowering overall energy consumption buildings. As light-emitting diode (LED) luminaires highly efficient, amount power consumed for purposes can be reduced, even situations where system at its full power. It has already been demonstrated that LED-lighting technologies facilitate significant savings through minimizing window size (the main source heat loss buildings), there considerable potential developing LEDs’ efficacy lighting-product efficiency ultimately achieve levels approximately 350 lumens per Watt (lm/W). For building designs sustainable future, it critical windows-to-wall ratio (WWR) optimized minimize both heating cooling loads, as well total by lighting, according LED, while still maintaining a suitable level occupants. This research examines influence WWR standard buildings Jordan using various LED (existing projected efficiencies). DesignBuilder software was utilized analyze effect LED-technology development optimizing typical residential structure Jordan. The presents beneficial recommendations with respect primary decision-makers design enhanced efficiency, considering losses gains associated solar light capitalize no adverse impacts windows size. outcomes suggest 17% could achieved have extremely efficient systems (350 lm/W), more than 50% less existing 40% recommended multiple standards. Additionally, this study highlighted when increases, demand will reduced because lower usage combined gain resulting from efficiency.