Zahra Barzegar, Shahin Heidari, Mahnaz Zarei,
Volume 22, Issue 2 (December 2012)
Abstract
Nowadays, with the development of the economy, the demand for energy is increasing rapidly while the energy supply is
growing shorter and shorter. Researches indicate that energy consumption in the residential sector counts for the main parts of
the total energy consumption. This paper evaluates the effect of building orientation on exposure to the solar radiation in a NESW
orientated case of urban residence in semi-arid climate. SW envelope, with an annual exposure of 13.52 percent, only
improves the thermal comfort of the house because of its annual climatic radiation trend. For vertical NE surface with
insufficient winter radiation exposure of (0 %) and cool summer radiation exposure of (3.38 %), it could be concluded that the
NE elevation is suitable and in demand in the summer but not in the winter. Total annual horizontal solar radiation exposure
percentage of (83.04%) indicates that huge non- climatic roof radiation is inappropriate and should be omitted. Finally, the
effects of solar radiation envelopes on electricity and natural gas consumption were thoroughly discussed.
M. Mohammadi, Z. Barzegar,
Volume 29, Issue 2 (12-2019)
Abstract
Wind catchers are one of the most prominent masterpieces of Iranian traditional architecture. In arid climate, it can improve thermal comfort through natural ventilation. With the aim of recognizing the impact of this masterpiece on thermal comfort, this research examined the effect of wind on summer ambient temperature by employing PMV. To this end, wind catchers of Salehi's House was selected. To investigate the function of wind catchers in Shiraz, enjoying a semi-arid climate, temperature, humidity and wind were measured by data logger TA120 between 9:00 to 16:00. Afterwards, PMV and PPD were obtained through Fanger Formula. The results based on wind and in the case when the wind catcher and openings are close and open showed that the amount of thermal comfort was directly related to the amount of wind coming from the wind tower. It was also concluded that the average ambient temperature in ground was declined by 0.8 °C and in the first floor it was declined by 0.9°C.
