摘要：Canopies exist as a part of a building or separate from the building facade, and it can be significantly employed to control the amount of solar radiation to the aspects of the building exposed to light, to reduce the peak temperature, to supply cooling requirements and to boost the quality of indoors natural lighting. The present research was conducted with aim of studying the effect of all kinds of canopies on reduction of energy consumption in commercial buildings in Yazd, using external canopies for one year in the commercial building in Yazd. This is an empirical research. AngstromPrescott formula was used to measure the amount of input energy by canopy in indoor commercial spaces. The results of paired-t test in SPSS indicates that regarding all external canopies except for horizontal aluminum plates with a blade angle of 90 - there is a significant relationship between using various kinds of external canopies. Regarding internal canopies, the results of paired-t test also indicate there is a significant relationship between the use of various kinds of these canopies and the reduction of radiated solar energy. In other words using various kinds of blinds and curtains for indoor space of Yazd commercial building effects the reduction of energy consumption. Also comparing the efficiency of various canopies against the same input energy, it can be said that the highest efficiency of external canopy is related to external blind with a blade angle of 90°, and the least efficiency is related to aluminum blade with an angle of 90°. Also, the highest efficiency of internal canopy is related to internal blind with a 90° blade, and the least is related to internal blind with 0° blade.
关键词：Canopy;commercial building;reducing energy consumption;hot and dry;yazd
