There is a growing interest among architects to allow for a huge amount of daylighting inside office buildings as a way of achieving user’s visual comfort, however, this result in high energy consumption due to the high solar gain. Intelligent window techniques are considered a suitable solution for this issue due to their ability to change their main functional parameters based on the changing environmental situations and therefore contribute to reducing energy consumption. This paper reviews various types of glazing techniques and conducts a comparative study on 12 glazing techniques by measuring their performance on different facades of 1000 sq. m office building using Energy plus 8.6 simulation software (WWR 40%). Thus, guiding the selection of the best glazing technique for each facade.
Studying the performance of each technique on single façade showed that the best glazing technique on the east and west directions were “Electrochromic glazing (EC) with low SHGC” which allowed for a reduction of 32.18% and 32.45% respectively. While the “EC glazing with medium SHGC” reached 31.91% reduction when applied on the south facade. On the other side, by applying each technique on the four facades together, the best cooling reduction of almost 49% was achieved by using “Triple with suspended Low-E film” glazing technique.