Practical Investigation to Evaluate the Effect of Using Nanocomposite Layer Within Double-Glazing Evacuated Window in Reducing the Solar Heat Gain and the Cooling Load for a Residential Building in a Hot Arid Region

Many factors affect the design of energy-efficient windows, such as glazing, orientation and shading. The most influential parameter in decreasing the thermal energy passing across the window is the type of glazing. This study investigates the effect of using a nanocomposite layer within an evacuated double-glazing window in reducing the heat gain for a typical residential room in a hot arid region. Two types of nano-materials have been selected: aerogel and nano-silica, mixed with epoxy resin. Different composites with different nano-contents were initially chosen to test their thermal conductivity value and transparency. The optimum nanocomposite has been deposited on the inner face of the external pane to eject undesired radiation. The data collected during the summer have shown the potential of this system to eliminate the heat gain by up to 73% compared to the traditional single-glass window and by 58% compared to the double-glazing air-filled window. Furthermore, the reduction in the cooling load swings between 8 and 14%.

Automated summary

This study investigates the effect of using a nanocomposite layer in reducing heat gain in a hot arid region. The data collected shows that the nanocomposite layer can eliminate up to 73% of heat gain compared to traditional single-glass windows and 58% compared to air-filled double-glazing windows.