Experimental Investigation of the Thermal Performance of Triple Glazed Windows Integrated with PCM and Low-e Glass

This study explores the effects of incorporating phase change materials (PCM) and lowemissivity (low-e) glass into triple-glazed windows to enhance thermal insulation in hot summer conditions in Iraq.The objective is to evaluate the effectiveness of four different triple-glazed window (TG) configurations: with two air-filled cavities; with low-e glass and air-filled cavities; with PCM in one cavity and air in the other; and with low-e glass and PCM in separate cavities.The experimental method used solar simulation to replicate high solar radiation (650 W/m ) and measure the internal surface temperatures of each window type.The results showed that configurations of low-e glass and PCM had the highest performance, reducing the inner surface temperature by up to 8.1 compared to two air-filled cavities and delaying peak heat load by 2 hours.These findings suggest that combining PCM and low-e glass significantly improves thermal comfort and energy efficiency in buildings.